Cooper Lighting Vision Flood manual O O D L I G H T I N G F U N D a M E N T a L S

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F L O O D L I G H T I N G F U N D A M E N T A L S

- Inverse Square Cosine Law

Footcandle levels are ultimately dependent upon the projected distance, aiming angle, and luminous intensity of a lamp/reflector combination. A cursory understanding of the equation which relates these variables provides insights to proper design technique and distribution selection.

I N V E R S E S Q U A R E C O S I N E L A W

E=I cos (x)/D2 -or-

Illuminance (Footcandles, fc) = Luminous Intensity (Candelas, Cd) * cos (incident angle X) / Distance2

Holding other variables constant, as the projected distance increases from the luminaire to the surface being illuminated, a greater amount of luminous intensity (I, Candela) is required to sustain an equal illuminance (E, Footcandle) level.

I= E D2

COS (x)

5fc (10')2

°= 577 candela

COS (30 )

 

 

 

I=

E D2

 

 

 

COS (x)

 

 

E=5 fc

5 fc (20')2

 

X=30°

 

= 2,310 candela

 

 

COS (30°)

cd

 

 

 

 

7

 

 

 

 

57

 

 

 

 

I=

 

 

 

 

30°

 

 

 

30°

 

 

 

 

 

 

'

 

 

 

0

 

 

1

 

 

 

=

 

 

 

 

D

 

 

 

 

E=5 fc

X=30°

cd I=2,310

 

 

'

 

0

2

 

=

 

 

D

 

 

Holding incident angle X constant at 30˚ while increasing the projected distance D from 10' to 20' requires an increase in candela from 577 to 2310 respectively to sustain an equal 5 footcandles (fc) of illumination at the target point.

The incident angle as measured from a luminaire’s directed intensity to the target surface normal also plays a significant role in determining illuminance values. Holding other variables constant as the incident angle from the target surface to the projected aiming line increases, so does the amount of luminous intensity (I, Candela) required to sustain an equal illuminance value.

I= E D2

COS (x)

5fc (10')2

°= 577 candela

COS (30 )

E=5 fc

X=30°

cd 577 I=

30°

 

 

'

 

0

1

 

=

 

 

D

 

 

I=

E D2

COS (x)

5fc (10')2

°= 707 candela

COS (45 )

E=fc

X=45°

I=707

cd

 

 

 

 

 

'

 

 

0

 

1

45°

=

 

D

 

Holding projected distance D constant at 10' while increasing incident angle X from 30˚ to 45˚ requires an increase in candela from 577 to 707 respectively to sustain an equal 5 footcandles (fc) of illumination at the target point.

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V I S I O N F L O O D A r c h i t e c t u r a l F l o o d L u m i n a i r e

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Contents Page S I O N F L O O D U E N T F O R MC E P T I O N a L D E S I G N T I C a L F L E X I B I L I T YPage Inverse Square Cosine Law O O D L I G H T I N G F U N D a M E N T a L SV E R S E S Q U a R E C O S I N E L a W O O D L I G H T I N G T E R M I N O L O G Y Floodlighting Terminology Nema IES ClassificationsO O D L I G H T I N G T E R M I N O L O G Y A M P L ET E R N a L L O U V E R S T E R N a L G R I D L O U V E R SP V I S O R I D E D S H I E L DR N D O O R S C T a N G U L a R B E a M P a T T E R N SS I G N G U I D E Illumination Recommendations Beam Pattern InformationL U M I N a T I O N R E C O M M E N D a T I O N S A M P a T T E R N I N F O R M a T I O NL O R C a P a B I L I T I E S L O R C a P a B I L I T I E SPage Page T I C a L C O N F I G U R a T I O N S R R O W S P O T N SR R O W F L O O D N F D I U M F L O O D M FD E F L O O D W F R T I C a L F L O O D V FE M I U M M a T E R I a L S E M I U M M a T E R I a L A N D a R D M a T E R I a LIP Rating X T U R E S E a L I N GR a T I N G M P S O U R C E O P T I O N S Metal Halide Pulse Start Metal Halide High Pressure SodiumM P O P T I O N S L S E S T a R T M E T a L H a L I D EPage Page O D U C T Specification S Features + BenefitsN I S H M E N S I O N SS M O U N T I N G O P T I O N S + Specification S Specifications + Dimensions VFS Standard MountS V F M M O U N T I N G O P T I O N S + Specification S Specifications + Dimensions Slipfitter MountT I O N S + a C C E S S O R I E S Specification S Specifications + DimensionsD E R I N G I N F O R M a T I O N VoltageInvue Canada

Vision Flood specifications

Cooper Lighting Vision Flood fixtures represent a significant advancement in outdoor lighting technology, designed to enhance visibility, safety, and aesthetics in various outdoor settings. These floodlights are engineered with an emphasis on energy efficiency, reliability, and superior performance.

One of the standout features of the Vision Flood series is its advanced LED technology. Utilizing high-output LEDs, these fixtures provide bright, uniform illumination while consuming significantly less energy compared to traditional lighting options. This not only reduces energy costs but also minimizes the environmental impact, making it an ideal choice for businesses and municipalities seeking sustainable lighting solutions.

The Vision Flood fixtures are available in multiple lumen output options, allowing users to select the right brightness level for their specific application. Whether illuminating large parking lots, sports fields, or architectural features, the ability to customize lighting intensity ensures optimal visibility and security.

Durability is another hallmark of the Cooper Lighting Vision Flood. Constructed with rugged, weather-resistant materials, these fixtures are designed to withstand harsh outdoor conditions, including heavy rain, extreme temperatures, and dust. The robust construction ensures a long lifespan, reducing the frequency of replacements and associated maintenance costs.

Incorporating smart technologies, many models in the Vision Flood series are compatible with advanced control systems. This allows for features such as dimming, scheduling, and motion sensing, providing users with greater control over their lighting environment. Such integration not only enhances energy efficiency further but also increases the flexibility of lighting designs.

The Vision Flood fixtures also boast an aesthetically pleasing design, making them suitable for both functional and decorative lighting purposes. Their sleek profile complements various architectural styles, ensuring that they can be seamlessly integrated into any outdoor setting.

With the added benefit of easy installation and minimal maintenance requirements, the Cooper Lighting Vision Flood series stands out as a versatile solution for a wide range of outdoor lighting needs. From enhancing safety and visibility to achieving energy savings and environmental sustainability, these floodlights are shaping the future of outdoor illumination. Whether for commercial, industrial, or residential applications, the Vision Flood fixtures represent a smart investment in quality lighting.
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