Outdoor Lighting Application Guide Solutions to all your lighting needs
Atmosphere and Security
Light and Glare Control
Energy and Light Efficiency 9-99
Making choosing... light work! Environment… energy efficiency… budget… luminaire height… spacing: these are just a few of the considerations that come into play when selecting the appropriate lighting. At Lumec, we offer refractor and reflector optical systems as well as combinations of the two. And we can integrate them in a variety of decorative and functional luminaires. As a result, you can meet all of your lighting needs, without compromising style or efficiency!
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How to use the Quick Selector Guide – Products Most Lumec luminaires can accommodate more than one type of optical system, providing greater application versatility. These tables have been developed to help you determine the best product/optical system combination for your needs …quickly and easily. The photos and drawings shown here illustrate how a Candela CAND1 suspended luminaire and the L70 Series of Traditional octagonal lanterns can accommodate three different types of optical systems: the RR, SE and RACE.
Candela · Cand1
How to use the tables:
Lantern · L70
RR
If you refer to them by luminaire: 250W max. (RB)
175W max. (RB)
250W max. (RB)
Choose the style of luminaire that harmonizes with your project.
2 3
Then identify the model(s) needed.
175W max. (RB)
Identify the optical system(s), which the selected luminaire model(s) can accommodate.
If you refer to them by optical system:
RACE
3
Identify the optical system delivering the lighting distribution you seek.
4
Next, confirm whether or not the luminaire(s) of your choice can accommodate it.
250W max. (RB)
Both of these approaches will provide you with the maximum wattage, as well as any restrictions that may apply, such as the use of a remote ballast (RB) with the maximum wattage.
1
Candela
3 4
RR
250W
SE
175W
RACE
175W
175W
Sealsafe
CAND7
CAND6
CAND2
2
Post-Top
CAND5
Suspended
CAND1
Refractor Reflector Combination
1
SE
CAND4
Reflector
250W max. (RB)
CAND3
Refractor
You can refer to these tables by luminaire or by optical system.
175W
175W
175W
175W
To determine whether or not the luminaire/optical system combination you favor will deliver the lighting required by your particular application, refer to the “Quick Selector Guide – Photometric Performance” tables on the following pages.
3
4
Optical Systems
Types of optical systems
5
Applications
Refractors
RR
ZED
The RR™ round borosilicate refractor features two series of prisms controlling the lamp’s horizontal and vertical luminous flux.
The large round acrylic or polycarbonate ZED™ refractor features two series of prisms controlling the lamp’s horizontal and vertical luminous flux. The refractor’s large surface allows better candela distribution.
RR5: Symmetrical (V) RR3: Asymmetrical (III) RR3MD: Asymmetrical (III) with medium deflector
ZED5: ZED3: ZED2:
Precise interior prisms for horizontal light control Precise exterior prisms for vertical light control Acrylic or polycarbonate high pressure injected molding
Symmetrical (V) Asymmetrical (III) Asymmetrical (II)
Typical light refraction pattern
ZED™ luminaires This installation is an excellent example of uniformity and atmosphere achieved on a residential street. These refractorbased Z14™ luminaires incorporate ZED™’s new state-of-the-art, large prismatic refractor, providing cost efficient, even lighting. These luminaires are the perfect addition to any project!
Reflectors
SG
SE
SCB/SHB
HBS/HBM Rue de la Commune
The SG™ reflector consists of segmented aluminum mirrors producing faceted arc-image duplicating light distribution patterns. SG1: SG2: SG3: SGQ: SGFM:
Asymmetrical (I) Asymmetrical (II) Asymmetrical (III) Symmetrical (V) Forward-throw
The SE™ reflector is hydroformed to produce faceted arc-image duplicating light distribution patterns. SE5: SE3:
Symmetrical (V) Asymmetrical (III)
SCB™/SHB™ Sealsafe™ sealed optical chambers consist of a hydroformed reflector permanently sealed to a tempered-glass lens with silicone. The optical system’s assembly provides high photometric cut-off performance, minimizes glare and reduces energy consumption over time. SCB3M: Asymmetrical cut-off (III) SHB3M: Asymmetrical hyper-extensive (III)
HBS™/HBM™ Sealsafe™ sealed optical chambers consist of a hydroformed reflector permanently sealed on a sagged tempered-glass lens. This assembly delivers cut-off performance while minimizing glare and reducing energy consumption. HBS distribution: MC2: Medium cut-off (II) SC2: Short cut-off (II) SS2: Short semi cut-off (II) MC3: Medium cut-off (III) HBM distribution: MC2: Medium cut-off (II) MS2: Medium semi cut-off (II) MN2: Medium non cut-off (II) MN3: Medium non cut-off (III)
Precise cut-off angle Highly reflective interior surface Precision hydro-formed reflector
Typical light source emission pattern and light reflection pattern
Old-Montréal is a high-profile, high-traffic tourist district that required lighting that combined traditional styling with modern photometric performance. These needs were effectively met by the L26™, a coach lantern-style luminaire incorporating an SG™ cut-off reflector optical system. This installation provides excellent road lighting while creating an inviting ambience for pedestrians visiting the area.
Reflector /Refractor Combinations
RACE The RACE™ system combines a round acrylic (100W maximum) or borosilicate (150 and 175W) prismatic refractor with a segmented, hydroformed uplight recovery dome. RACE5: RACE3: RACE3D:
Symmetrical (V) Asymmetrical (III) Asymmetrical (III) with deflector
High pressure molded sealsafe lamp access mechanism
SHA/SSA SHA™/SSA™ Sealsafe™ sealed optical chambers consist of a hydroformed reflector permanently sealed by silicone on a high-pressure injection-molded refractor with internal prisms only. This optical system’s assembly provides high photometric hyperextensive performance while minimizing glare and reducing energy consumption.
Precision hydro-formed reflector for complementary vertical light control
SHA3M: Asymmetrical hyper-extensive (III) SHA4L: Asymmetrical hyper-extensive (IV) SSA3M: Asymmetrical semi cut-off (III) Refractor available in: AC: Acrylic PC: Polycarbonate
Typical light reflection and refraction pattern
Acrylic or polycarbonate high pressure injected molded interior prisms refractor for horizontal light control
Wellington Avenue Combining esthetics with state-of-the-art photometric performance, this installation offers the best of both worlds. Featuring Ancestra™ AT50™ suspended luminaires, it provides excellent lighting while respecting the look and feel sought for this revitalized commercial downtown district.
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Quick Selector Guide – Products The following tables will help you determine, at a glance, which product(s) can accommodate a given optical system, along with wattage restrictions, etc. For greater ease of reference, their presentation corresponds to the categories of the Lumec binder. Since space restrictions prevent us from showing our complete product offering, we invite you to contact our representative for full details.
OT20
OT20
NW
CAND1
CAND7
Optima
RB
Remote Ballast
ARB
Always Remote Ballast
*
Polycarbonate Only
**
Reduced Jacket
NW203
LLPLC
Candela Suspended
NW208
LLHL
New Westminster Post-Top
LP20
Signature
AT50
Z14
Globes
Sealsafe
AT30
LP20
L73
L26A
Zenith
L40S
L31
L80
JLT10
L28
L50
Ancestra
Lantern
5200 Globes
Small Square Lantern
Large Square Lantern
Octagonal Lantern
Opticone
Z47A
Globes
Hexagonal Lantern
TR20
Joliet
DMS50
Nostalgia
Transit
HBS
OPS40
Domus
Z65
Optilux
Opticone
Helios
Harmonia
Victorian Lantern Lantern
Refractor
RR
Reflector
175W
175W
250W (RB)
175W
175W
175W (RB)
175W
250W
200W (RB)
175W (RB)
250W*
175W
175W
250W (RB)
175W
250W
250W (RB)
175W 250W (RB) (ARB)
250W (RB)
175W 250W 250W 250W 175W (RB)
(RB)
(RB)
250W (RB)
250W (RB)
250W
250W 250W 250W
SG
175W
250W
250W
(RB)
(ARB)
(ARB)
(ARB)
250W (RB)
(RB)
175W 250W 250W (ARB)
(RB)
(RB)
250W (RB)
250W
**(RB)
250W*
250W (ARB)
250W 250W 250W 250W (ARB)
(RB)
(ARB)
250W (RB)
175W 250W (RB)
(RB)
250W (RB)
400W 400W ** (RB)
400W
SG
400W (RB)
250W (RB) 1000W**(RB) 1000W 400W **(RB) (RB)
400W **(RB)
Z65
Z60
HBM
HBS
OPCS
OPC
OPL80/85
OPL40/45
OPS80/85
OPS40/45
DMS60
DMS50
TR20
(ARB)
400W (RB)
SCB3M
250W (ARB)
175W
SE
**(RB)
400W** (RB)
RACE
ZED
400W
**
(ARB)
TR10
Z47
RR
400W
175W
SE
SHA3M
Z40
JLT10/20/30
L51
L50
L29
L23
L80/L81
L31/L32
L30
L73
L72
L71
L70
L60
L28/L61
L24
L41
L40
L26A/N
L40S
L26SA/N
L21A/N
L20
AT50
AT30/AT40
AT10/AT20
250W (RB)
ZED
SCB3M
400W** (RB)
RACE
Z14
Z10B
RR
250W
175W
SG
SHA3M
Z10A
LP20
5280
5260
5240
5200
LLHL
LLHX
LLPLC
NW208
NW207
NW203
NW
CAND7
CAND6
CAND5
CAND4
CAND2
175W
ZED
SCB3M Refractor/ Reflector
CAND3
250W (RB)
SE
Reflector
CAND1
XL10
OT20
Sealsafe ® optics
OT10
with the maximum wattage allowable
400W** (RB) 400W** (RB)
The SG Optical System ships in different sizes. The small SGFM cannot accommodate 200W and higher wattages.
400W (ARB)
RACE
SHA3M
HBS (optic)
HBS (optic)
HBS (optic)
HBM (optic)
HBM (optic)
HBM (optic)
250W*
250W*
400W
310W
750W
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How to use the Quick Selector Guide – Photometric Performance These concise tables contain a great deal of information.
" 24
" 24
Mounting height: 15"
4"
Mounting height: 15"
4" 4"
4"
Working from common factors such as Mounting Height, you can see how optical systems perform in given applications and how they measure up against each other.
B Opposite
A One Side
2 1
Local/Subdivision mounting height factor
2 spacing at 15' mounting height
5
6
7
8
9
10
11
12
75'
90'
105'
120'
135'
150'
165'
180'
3 5
15'
A
HPS MH
B
HPS MH
RACE3
70 •100•
100
150 •150•
70 •70•
•175• •100•
4 6 There are two ways of using the tables: What optical system/wattage can meet application requirements?
What luminaire spacing does the optical system allow for a given application?
1
Identify the application category that corresponds to your project: “Local/Subdivisions”, “Collector/Main Street”, or “Major/Roadway”.
1
Identify the application category that corresponds to your project: “Local/Subdivisions”, “Collector/Main Street”, or “Major/Roadway”.
2
Depending on the application category, choose One side (A), Opposite (B), or Median (C) installation and refer to the appropriate line in the tables.
2
Depending on the application category, choose One side (A), Opposite (B), or Median (C) installation and refer to the appropriate line in the tables.
3
Choose the type of optical system to be used with the luminaire.
6
4
Then chose the type of lamp — Metal Halide (MH) or High Pressure Sodium (HPS).
5
Tells you with which mounting height the calculation for the spacing of the luminaires is based on.
Based on this information, choose the types of optical systems suitable for your needs (to meet the required spacing). There will be a colored square in the appropriate category (layout and lamp). This color identifies the minimum wattage required by a given optical system, in order to meet the criteria.
6
Based on these criteria, you will be able to determine quickly: • Maximum luminaire spacings allowed by the optical system. • Minimum wattage required with the optical system (colored squares)
4
The type of lamp — Metal Halide (MH) or High Pressure Sodium (HPS) — will also influence photometric performance as they have different light (lumen) outputs.
5
Tells you with which mounting height the calculation for the spacing of the luminaires is based on.
3
More than one optical system may meet these criteria.
You can then refer to the “Quick Selector Guide – Products” tables to determine which of these optical systems can be accommodated by the luminaire family selected.
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Photometric Performance Tables The tables featured here will help you identify, at a glance, what luminaire spacings can meet the lighting requirements of a given application in terms of lighting uniformity levels.
4'
The values expressed in these tables reflect typical calculations based on maintenance factors standard in the industry. These tables are designed to help you better compare the performance of different optical systems for a specific application.
24'
4'
Mounting height: 15'
4'
24'
Mounting height: 15'
4'
4'8
A
RR3
High Pressure Sodium (HPS) based on a five-year cycle
Non-Sealsafe luminaire: 0.80 Sealsafe luminaire: 0.88 Metal Halide (MH) Non-Sealsafe luminaire: 0.72 Sealsafe luminaire: 0.79
B
HPS MH
A
HPS MH
SE3 15'
11
12
5
6
7
8
9
10
11
12
5
6
7
8
9
10
11
12
75'
90'
105'
120'
135'
150'
165'
180'
75'
90'
105'
120'
135'
150'
165'
180'
75'
90'
105'
120'
135'
150'
165'
180'
B
HPS MH
A
HPS MH
SG3
C Median 70 •70•
HPS
100 •100•
HPS
150 •150•
HPS
200 •175•
HPS
250 •250•
HPS
400 •400•
HPS
HPS: MH:
MH
MH
MH
MH
MH
MH
70 W
B
HPS MH
A
HPS MH
SCB3M 100 W 150 W
B
HPS MH
A
HPS MH
RACE3 175 W/200 W
B
HPS MH
250 W
A
HPS MH
B
HPS MH
A
HPS MH
B
HPS MH
SHA3M 400 W
High Pressure Sodium Metal Halide
SHA3MHS
•100• 70
100 •100•
70 •100•
HBS (optics)
HPS MH
B
HPS MH
A
HPS MH
B
HPS MH
•150•
70 •70• 70
•150•
70 •100•
HPS MH
70 •70•
•100•
A
HPS MH
•100•
HPS MH
A
HPS MH
B
HPS MH
A
HPS MH
70
100
150
•100•
•150•
•175•
70 •70• 100
150
•100•
•150•
•175•
70 •70•
100 •100•
240'
HPS MH
A
HPS MH
B
HPS MH
A
HPS MH
B
HPS MH
A
HPS MH
B
HPS MH
•70•
A
HPS MH
B
HPS MH
A
HPS MH
B
HPS MH
150 •150•
•175•
100 •150• 70
•100•
•150•
150 •175• •100•
•150•
consult factory
•100•
consult factory
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
C
HPS MH
B
HPS MH
70
C
HPS MH
70
SCB3M
70 •70•
•100• 150
200
•175•
•250• 100
70
250
RACE3
150
•100• 100 •150•
B
SG3
70
•150•
HPS MH
SE3
100
•70•
C
ZED 3
100
•70•
HPS MH
ZED 2
150 •150• 70
•150• 150
•175•
200
•175•
•250•
70
SHA3M
100 •100•
•150•
100
150
•100•
•150• 70
•175• 100
•70•
SHA3MHS
•100•
150'
HBS (optics)
70
B
100 •100•
100
270'
70 •100•
HPS MH
SHA3MHS
70 •70• 210'
A
SHA3M
•100•
70 •70•
HPS MH
RACE3
•100•
70
B
•175• 70
•70•
SCB3M
70 •70•
150 •150•
B
RR3
150 •175•
100
HPS MH
B
200 •250• 100 •150•
•100•
B
SG3
70 •70•
180'
A
SE3
70 •70•
•70•
HPS MH
ZED 3
100 •100•
150
HPS MH
B
ZED 2
100
•70•
150' A
•150•
70 •70•
spacing at 30' mounting height
Since space restrictions prevent us from showing all possible layouts (width of street, luminaire/optical system combinations, etc…) and maintenance factors, we invite you to contact our representative for full details and a point-by-point layout for your project.
RR3
70
A One Side B Opposite Side
A
•150•
•70•
HPS MH
The tables indicate wattages capable of maintaining 0.5-footcandle illuminance and 6 to 1 avg./min. uniformity. This type of lighting is ideal for major thoroughfares connecting the main traffic-generating areas as well as major rural highways into the city.
10
HPS MH
A
Major/Roadway
9
•100•
180'
210'
240'
100 •150• 100
HBS (optics)
HPS MH
C
HPS MH
HBM (optics)
100 •100•
•150• 70
•70•
•100•
HBM (optics)
150 •175• 70
•250• 100
B
HPS MH
•100•
HBM (optics) •150•
C
HPS MH
150 •150•
70
•175•
100 •100• 70 •100•
100 •150• 70 •100•
150 •150• 100
•175• 150 •150•
150 •175•
•250•
100 •150• consult factory 70
100
•100• 70 •70• •100•
•150•
100
150 •150•
200
•175•
•250•
100 •100•
150 •175•
•150•
100 •100• •150• 70 •100•
150 •175• 100 •150•
•250•
100
150
•100•
•150• 100
•100• 150'
B
•175•
•100•
100 consult factory 100 consult factory
30' 70
150
•100• 70
270'
consult factory 70 •70•
150 •250• 100 •150•
•175•
150 •175• 150 •175•
•150• 180'
210'
240'
'
C Median
B Opposite
B Opposite
6'1 2' 1 2'4
8
A
ZED 3
based on a three-year cycle
'
Mounting height: 15'
7
•70•
HPS MH
4'1 2'1 2'
6
HPS MH
B
6'1 2' 1 2'4
Mounting height: 15'
5
B
ZED 2
' 1 2' 8'4 '
4'1 2'1 2'
The tables indicate wattages capable of maintaining 0.8-footcandle illuminance and 4 to 1 avg./min. uniformity. This type of lighting is ideal for municipal areas with high nighttime pedestrian traffic, such as densely developed downtown business districts and on the outskirts of the municipality. This also includes high-traffic roadways within residential, commercial and industrial zones.
100
HPS MH
' 12
Mounting height: 15'
Collector/Main Street
The tables indicate wattages capable of maintaining 0.5-footcandle illuminance and 6 to 1 avg./min. uniformity. This type of lighting is ideal for areas with low nighttime pedestrian traffic, such as residential developments consisting of single-family homes, townhouses, small apartment buildings and small neighbourhood shops. It is also suitable for roadways providing direct access
The maintenance factor used in these calculation tables are the most widely used:
4'8
A One Side
Local/Subdivision
spacing at 15' mounting height
' 1 2' 8'4 '
B Opposite
A One Side
mounting height factor
' 12
Mounting height: 15'
270'
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Seven Bridges Development
Pathways and Entrance Lighting
The planners of the "Seven Bridges" residential and commercial development chose the Candela CAND5 luminaire for street and roadway lighting, at the very start of the project in 1991.
Used along entrances to municipal buildings and parking lots, the Candela CAND5 with the SE reflector optical system provides excellent lighting, for greater safety and efficient glare control.
As the project progressed through different phases, Lumec developed and integrated the cut-off SE reflector and RACE combined refractor/reflector systems in CAND5 units.
Harmonizing with the architecture of the buildings, these luminaires light building and parking lot accesses, and are complemented by Candela CANDB2 bollards.
Street and Roadway Lighting
This was the first phase of the "Seven Bridges" project where SE and RACE optics were used inside the standard luminaire. These luminaires enhance the project as a whole, while maintaining its general signature look.
Parking Lighting
By the time the commercial phases were ready for construction, Lumec was in a position to offer CAND5 luminaires with the photometric performance to meet all established criteria, including uniformity and, in some areas, higher light levels.
Pathway and Entrance Lighting
While some of the luminaires were installed at high mounting heights with different spacings, the overall esthetic quality of the project was maintained throughout. Ice Arena
Ice Arena
Entrance to the Ice Arena at the Seven Bridges Complex.
Candela with RR
Street and Roadway Lighting
Candela with SE
Candela with RACE
Parking Lighting
These Candela CAND5 luminaires with RR optics light roadways in and around the "Seven Bridges" development.
The Candela CAND5 luminaires, featured here with RR refractors, can also accommodate SE optics for lighting parking facilities.
Incorporating the RR refractor, these luminaires provide good street lighting while creating atmosphere by sending light on surrounding buildings.
Using an RR refractor and SE reflector, these luminaires provide good, even lighting around the development's various commercial and municipal buildings.
The CAND5 was the original luminaire chosen for early phases of the project and, when new optical systems were available, it became the standard for the rest of the project.
Different luminaire heights and layouts provide the lighting levels and uniformity required by the buildings' various uses. The first phase of the Seven Bridges project to use SE optics inside the standard development luminaire.
Candela CAND5 Details of the Candela CAND5 with RR optics, lighting the main road of the development. The pole also includes banner arms to complement different activities.
Details of Candela CAND5 (shown here with RR optics) lighting parkings along the different complexes of this development.
Details of the Candela CAND5, with SE optics, and the CANDB2 bollards at the entrance of the Ice Arena.
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Luminaires… How They Light! Understanding light
Controlling light
A basic knowledge of light, its science and technology can help you better understand and measure its efficiency in terms of your project’s specific needs.
Optical systems are the mechanical means used to control the luminous flux of the lamp, redirecting it to the specific area where it is required. This luminous flux (or total lamp output) is measured in lumens, while the candela refers to the luminous intensity in a given direction.
In the case of a luminaire, the actual source is the lamp, which uncontrolled, will emit light in all directions. As a result, much of that light may be of little use. In some cases, in fact, it may actually be harmful.
Light
Controlling the light is where the science of photometry comes in. Photometry not only quantifies and qualifies light emissions, it also seeks to develop new ways of managing those emissions, and directing them to targeted areas using optical systems.
Radiant energy that is capable of exciting the retina and producing a visual sensation. The visible portion of the electromagnetic spectrum extends from about 380 to 770 nanometers.
Photometry The measurement of quantities associated with light. Photometry may be visual in which case the eye is used to make a comparison, or physical with measurements made by means of physical receptors.
This term refers to the actual height of a luminaire’s optical system luminous center. This dimension becomes the primary reference in the Isolux.
12"
Isolux Curves A line that shows all the points on a surface where the illuminance is the same.
Hou se S ide 0 .2 0 .3 0 .4
Coe 0.5 ffic ien t
.3
0 1 3
.0 5
2
House Side
3
2
1
0
of u .6 tiliz atio 0.7 n
.1 .0 7
0.2
0.3
0.4
0.5
0.6
Stre et S ide 4
Coefficient of utilization
7
1
1
.3 .1
3
.07 .05
4
0
1
2
3
A borosilicate glass or plastic device used to redirect the flux from a source, primarily by the process of refraction.
4
5
6
Typical Isolux Refers to the light distribution on the “front” side of the luminaire where the street or parking is located.
7
Street Side Refers to the light distribution on the "front" side of the luminaire where the street or parking is located.
House Side Refers to the light distribution on the "back" side of the luminaire where the houses should be on a street.
Coefficient of Utilization The ratio of the luminous flux (lumens) from a luminaire calculated as received on the work plane (pavement) to the luminous flux emitted solely by the luminaire’s lamp.
The SI definition of fundamental luminous intensity in a given direction. One candela is one lumen per steradian (lm/sr).
Reflector A reflective device used to redirect the flux from a source by the process of reflection. These devices are usually made from aluminum sheets. These sheets are either polished and anodized sheets (Alzak) or hydroformed from 3002 aluminum alloy, bright dipped and anodized for a mostly specular finish. Or from 1100 aluminum alloy for a mostly diffusing finish.
Foot-candle fc A unit of illuminance. One foot-candle equals one lumen per square foot (lm/ft2).
Horizontal Illuminance The area density of the luminous flux incident at a point on an horizontal plane.
Vertical Illuminance: The area density of the luminous flux incident at a point on a vertical plane.
Isolux (isofootcandle) A line plotted on any appropriate set of coordinates to show all the points on a surface where the illuminance is the same. A series of such lines for various illuminance values is called an isolux (isofootcandle) diagram.
Lux, lx The SI unit of illuminance. One lux equals one lumen per square meter (lm/m2).
Illuminance The areal density of the luminous flux incident at a point on a surface.
Discharge Lamp With Metal Halide:
These are clear tubular or ovoid diffusing lamps made of glass, which encloses a discharge tube in which metal iodides have been inserted: for example, mercury, sodium, thallium or indium iodides. High Intensity Discharge (HID) Lamp
An electric discharge lamp in which the light producing arc is stabilized by wall temperature. HID lamps include groups of lamps known as mercury, metal halide, and high pressure sodium.
Another concept gaining in importance is Luminance.
Street Side
5
Isolux
Candela, cd Refractor
The diagram’s scale is graduated by mounting height across the road as well as along the road. It also establishes the percentage of the rated flux of the lamp inside the luminaire, which is concentrated on the targeted area.
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2
The most common measure of the performance or efficiency of a luminaire/optical system combination is the Footcandle or Lux. These quantify the illuminance, which refers to the way light interacts with horizontal and vertical planes.
Lumens, lm SI (Système International – metric system) unit of luminous flux. Photometrically, it is the luminous flux emitted within a unit solid angle (one steradian) by a point source having a uniform luminous intensity of one candela.
The key photometric document, the isolux diagram makes it possible to quickly identify the appropriate road lighting solution for a given project.
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0.7
Measuring light
Specifically, this refers to the light value of a line plotted along a set of coordinates, showing all points on a surface having the same illuminance. A series of these lines is defined as an isolux diagram.
5 0.1
0
The reflector/refractor: this combination applies the best of both systems for optimum photometric performance and energy efficiency. In short, it lights more efficiently, and saves you money in the process!
Illuminance or more specifically, horizontal illuminance is the most widely used factor when assessing the efficiency of outdoor lighting. Increasingly, vertical illuminance is also being considered, particularly in the case of wall or ambiance lighting. The Isolux is used to express these measurements.
0 .1
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The refractor: a system that uses prisms to redirect the light horizontally or vertically, as needed. The reflector: a system using formed reflective surfaces to redirect the light. These surfaces can consist of a single hydroformed piece, or an assembly of multiple parts.
Mounting Height or Light Center
1
This document showcases the three main types of optical systems:
Luminous Flux Luminous flux is the concept for the total quantity of light energy emitted per second by a light source.
Luminance Luminance is the concept for the luminous intensity emitted per unit of area of a surface in a specific direction. The unit is the candela per square meter (cd/m2).
High Pressure Sodium (HPS) Lamp
A high intensity discharge (HID) lamp in which light is produced by radiation from sodium vapor.
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Luminaires… How They Light Together! One luminaire does not a project make! This being said, it is not enough to consider how just one luminaire lights. Rather, you must consider how a number of luminaires work together to deliver the lighting required by your project.
Light distribution
This involves two criteria — distribution, which generally refers to the way light is directed to a horizontal street (uniformity) and the efficiency of the optical system (footcandle/lux).
Distribution types are categorized by a number of associations such as the IESNA (Illuminating Engineers Society of North America). These same organizations define uniformity and value levels.
Distribution
The diagrams shown here illustrate how to determine whether a given type of distribution can adequately meet your project’s requirements.
Refers to the way light is directed to a horizontal street (uniformity) and the efficiency of the optical system (footcandle/lux).
Illuminance uniformity
0
50 1 .1
45 40
2 .1
35
2 .0
30
1 .8
25
1 .5
20
1 .4
15
1 .6
10
1 .2 0 .9
5 0 .6
0 0 .4
0
5
0 .6
0 .4
10
0 .3
15
0 .9 0 .5 0 .3
20
1 .2 0 .7 0 .4 0 .3
25
1 .4 0 .9 0 .6 0 .4 0 .2
30
1 .4 1 .1 0 .7 0 .4 0 .3
1 .6 1 .2 0 .8 0 .5 0 .4 0 .2
0 .2
35
0 .2
40
1 .9 1 .3 0 .9 0 .6 0 .4 0 .3 0 .2
45
1 .5
1 .9
1 .1
1 .1
1 .0
0 .8
0 .8
0 .7
0 .5
0 .6
0 .5
0 .4
0 .4
0 .3
0 .3
0 .3
0 .2
0 .2 0 .1
50
1 .3
1 .3
55
0 .2
0 .2
0 .2
0 .1
60
5 1 .2
1 .4
1 .6
1 .2
0 .1
0 .9
10 0 .9
1 .0 1 .3 0 .9 0 .6 0 .5
0 .9 0 .6 0 .5 0 .4 0 .3
0 .3
0 .2
0 .2
0 .2
0 .1
0 .1
0 .1
65
0 .7
1 .1
0 .4
0 .1
15
0 .6
0 .9 0 .7 0 .5 0 .4 0 .4 0 .3 0 .2 0 .2 0 .1
0 .1
70
20
75
0 .6
0 .8 0 .6 0 .4 0 .4 0 .3 0 .3 0 .2 0 .2 0 .1
0 .1
25
80
0 .5
0 .6 0 .5 0 .3 0 .3 0 .3 0 .2 0 .2 0 .1 0 .1
0 .1
30
0 .3
0 .2 0 .2
0 .2
0 .2
0 .1
0 .1
0 .1
95
0 .1
0 .1 0 .1
100
0 .2
0 .1
0 .1
110
0 .2 0 .1
115
0 .2
0 .2 0 .2
125
0 .2
130
0 .4
0 .4
0 .3 0 .3
135
0 .5
0 .3
0 .3
0 .2
0 .5
0 .4
0 .3
0 .3
0 .4
0 .4
0 .4
0 .2
0 .2
0 .2
0 .4
0 .3
0 .2
0 .2
120
0 .3
0 .3
0 .2
0 .2
0 .2
0 .1
0 .3
0 .2
0 .3
0 .4
0 .4
0 .4 0 .3
140
0 .2
0 .3
0 .4
0 .3
0 .3
0 .2
0 .2
0 .3
0 .3
0 .3
0 .3
0 .1
0 .2
0 .3
0 .2
0 .2
0 .2
0 .2
0 .2
0 .2
105
0 .2
0 .2
0 .2
0 .2
0 .1
0 .1
0 .2
0 .2
1
0 .2
0 .2
0 .2
0 .2
80 on gro 85 und 90 95 0.
0 .1
0 .2
0 .2
0 .2
0 .2
0 .1
0 .1
0 .2
0 .2
0 .2
0 .1
0 .2
0 .2
0 .2
0 .2
0 .1
0 .2
0 .2
Typical area information.
H 60 orizonta 65 l illu 70 minan 75 ce
0 .1
0 .2
0 .2
0 .2
0 .2
55
0 .2
0 .2
0 .2
0 .2
0 .2
0 .3
0 .2
0 .2
0 .2
50
0 .2
0 .3
0 .3
0 .3
0 .2
0 .3
0 .4
Horizontal illuminance on the ground
45
0 .3
0 .4
0 .4
90
40
0 .3
0 .5
0 .1
85
35
0 .4 0 .3
100 0 .3
0 .4
0 .4 0 .4 0 .5 0 .6 0 .5 0 .4 0 .6 0 .5
0 .5 0 .6 0 .7 0 .6 0 .6 0 .7 0 .6
0 .4
145 15 feet0
0 .3
0 .5
0 .5
0 .4
105
0 .5
0 .6
0 .6
0 .8 0 .8 0 .8 0 .7 0 .9 0 .6
1 .0 0 .9 1 .1 0 .9 0 .9
1 .1 1 .2 1 .4 0 .9
1 .3 1 .3 1 .4 1 .6
125
0 .7
1 .1
1 .3
1 .1
120
0 .6
0 .9
0 .9
0 .9
115
0 .6
0 .8
0 .7
0 .6
110
0 .9
1 .0
1 .3 1 .2 1 .6 1 .4
130
1 .2
1 .4
1 .6 1 .9 1 .5
135
1 .9 1 .8
1 .5 2 .0
140
0 .9
145
1 .1
2 .1
150
While the isolux makes it possible to qualify and quantify the performance of a single optical system, the point-by-point layout takes things to the next level: it allows you to determine the performance of two or more luminaires working together. The illustration presented here shows two luminaires positioned on a typical street. The point grid, which is used to calculate illuminance, and the corresponding statistics allow you to determine Maximum Illuminance (Emax), Minimum Illuminance (Emin) and Average Illuminance (Eavg).
This represents a typical point by point diagram of multiple luminaires.
Typical Point by Point The information typically placed under a point by point diagram
Maximum Illuminance [Emax] The maximum illuminance value calculated on the grid.
Working from this data, you can establish the uniformity ratio of your projected installation using the following two formulas:
Minimum Illuminance [Emin] The minimum illuminance value calculated on the grid.
• The Eavg/Emin uniformity 50
45
40
35
30
25
20
• The Emax/Emin uniformity This will allow you to determine what optical system meets your project’s uniformity requirements. And since not all optical systems are created equal, it is essential for you to know how effectively a given luminaire/optical system redistributes light on the street, and how much of that light ends up on surfaces around the road. This “Light Trespass” is as important a consideration for your project as the amount of light on the road where ambiance is a factor.
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The information provided by this point-by-point layout will go a long way in helping you select the most efficient optical system for your needs. And optical efficiency gives rise to energy efficiency, which in turn gives rise to significant savings over time!
Typical Point by Point
Point by Point Layout: Representation of illuminance or luminance values at specific points on the designated area.
Points Footcandles or Lux values at these coordinates in this type of installation.
Uniformity [Eavg/Emin] The ratio of the average illuminance value by the minimum illuminance value on the calculation grid.
Uniformity [Emax/Emin] The ratio of the maximum illuminance value by the minimum illuminance value on the calculation grid.
Light Trespass
Optical Efficiency The ratio of luminous flux (lumens) emitted by an optical system to that emitted by the lamp or lamps used therein.
[Obtrusive Light] Unwanted light which, because of quantitative, directional or spectral attributes in a given context, gives rise to annoyance, discomfort, distraction, or a reduction in the ability to see essential information.
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The Science of Lighting!
The Sealsafe Principle
Photometric development Intent on meeting the requirements of the widest range of lighting applications, we offer our clients sturdy, attractive and efficient luminaires integrating every type of photometric distribution and/or system regardless of the style of lighting unit selected.
Retrofitting segmented cut-off optics in traditional luminaires, for instance, has resulted in units that deliver greater energy efficiency and better control of light pollution.
Photometric performance over time Having produced luminaires that are better built, more resistant and easier to maintain, we shifted our attention to their long-term photometric performance and energy efficiency, seeking to light more, light it better and light it longer, using less energy.
Designed for versatility and ease of maintenance
A combination of breathing and diffusion!
Appreciated for their versatility, these energy efficient units are also valued for their toolfree access system and sturdy construction resulting in lower maintenance and servicing costs.
Breathing By optimizing the design of the optical components forming the optical chamber, Sealsafe systems have significantly reduced the amount of air exchanged by the breathing effect. This is known as “respiration” and requires a tight seal.
Photometric evolution Implementing an approach, which has established Lumec as a leader in its field, we design our own, more efficient optical systems for integration in decorative luminaires. Our Photometric Development Department uses a computer-driven, mechanized goniometer to test prototypes. It also fine tunes these, and any other optical system to be incorporated or retrofitted into our luminaires.
Used throughout the world since 1985, the Sealsafe sealed optical system has proven its effectiveness under the most extreme conditions. But how does it work?
Our work gave rise to the Sealsafe sealed optical chamber, which effectively combines photometric and energy efficiency. By reducing the internal depreciation and permanent depreciation associated with dust contamination, this sealed optical chamber provides long-term photometric performance from lower lamp wattages. The result: energy savings and reduced maintenance costs!
The Sealsafe advantage Virtually eliminating the infiltration of dust particles and other pollutants, the Sealsafe sealed optical chamber has a higher L.L.F. (light loss factor) which allows the use of lower wattages. This, in turn, translates into savings that will continue to add up throughout the entire lifespan of the luminaire.
Cleanly superior Every component in the Sealsafe system has been designed to prevent dust, insects and other pollutants from contaminating the sealed optical chamber. As a result, the interior of the refractor remains clean and its deterioration is greatly reduced.
Furthermore, the absence of exterior prisms on the optical system’s refractor and lens provides a smooth surface that precludes the build-up of dirt and allows the exterior of the refractor to be cleaned by wind and rain.
Designed to respond to a variety of lighting needs, luminaires equipped with the Sealsafe system are available in a range of distributions.
Intent on delivering complete solutions to today’s lighting needs, Lumec and its divisions have adopted a total approach to the production of quality luminaires and systems that light up projects of every description.
To ensure imperviousness, a polymer-injected shutter fits into a polymer-injected sleeve mechanically assembled to the top of the reflector. A self-adjusting injected-silicone gasket on the shutter then seals the shutter to the sleeve. The high leak resistance provided by the gasket around the lens refractor/reflector joint and lamp-access mechanism slows the change of pressure, so polluted air will not be aspirated too quickly from the outside. Breathing
Diffusion
Diffusion Engineered for excellence All Sealsafe optical systems have been engineered for lighting excellence. SHA, SSA, SHB and SCB Sealsafe systems are built around a hydroformed aluminum cut-off reflector whose precise photometric distribution delivers better light control. In the case of SHA (hyper-extensive) and SSA (semi cut-off) distributions, this highly effective reflector is permanently sealed and assembled on an injection-molded prismatic refractor with internal prisms only. On the other hand, the reflector of SHB (hyper-extensive), SCB (cut-off) and Helios™ HBS™ (cut-off) and HBM™ (cut-off) optics is sealed on a glass sag lens. The result: more uniform lighting from optical systems that minimize uplight and glare, provide less veiling luminance and ensure optimal visual comfort while maximizing photometric performance.
The major contribution of the Sealsafe system, however, relates to the complete elimination of the volume of air circulating through diffusion. The reduced airflow helps improve the luminaire dirt depreciation (L.D.D.) factor. The Light Loss Factor or L.L.F. of luminaires equipped with the Sealsafe system is also significantly different from that of standard luminaires. This L.L.F. results from the interrelation of the following factors: · L.L.D. (lamp lumen depreciation) · L.D.D.(luminaire dirt depreciation) The Sealsafe’s higher L.L.F. stems from its higher L.D.D. factor, since the unit’s sealed optical system prevents dust and pollution from entering. This higher L.L.F. makes it possible to use lower wattages for results, which, with other optical systems, would require higher wattages.
Luminaire Dirt Depreciation:
Light Loss Factor
[L.D.D.] The fractional loss of task illuminance due to luminaire dirt accumulation.
[L.L.F.] Light Loss Factor, also called Maintenance Factor: The ratio of illuminance for a given area to the value that would occur if lamps operated at their (initial) rated lumens and if no system variation or depreciation had occurred.
Lamp Lumen Depreciation Factor: [L.L.D.] The fractional loss of lamp lumens at rated operating conditions that progressively occur during lamp operation.