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10
CONTROL + EFFICIENCY
0°
[nadir]
180°
UH
Back Forward
Uplight
30° 30°
60° 60°
80° 80°
90° 90°
100° 100°
UL UL
BVH FVH
BH FH
BM FM
BL FL
LUMINAIRE CLASSIFICATION
The IESNA’s revised Luminaire Classification System
[TM15-07 revised] creates a new basis of
measurement for site lighting visibility and adjacent
property interaction. This technical memorandum
subdivides the luminaire distribution into smaller
angular zones and subzones to more clearly represent
how much light is emitted at various angles. The values
for each subzone give an indication of the appropriate
use for the luminaire within an application. For dark sky
sensitive areas, the uplight component tells how much
the luminaire will contribute to sky glow.
For applications with strict light trespass regulations,
the back light portion of the distribution helps
determine how much light will reach neighboring
properties. Talon reflector assemblies keep light
on task by contributing as little as 0.0% total upward
illumination and 0.8% total backlight.
Forward Light
Forward Light Low [FL]
Forward Light Mid [FM]
Forward Light High [FH]
Forward Light Very High [FVH]
Back Light
Back Light Low [BL]
Back Light Mid [BM]
Back Light High [BH]
Back Light Very High [BVH]
Uplight
Uplight Low [UL]
Uplight High [UH]
Property
Line
Glare
Light Trespass
Uniform Task Illumination
NEIGHBORHOOD AND DARK SKY FRIENDLY
National organizations work to educate the general public on best lighting practices in order to minimize light trespass, reduce sky-glow and improve
nighttime visibility through glare reduction. Experts understand the visual system adapts to surrounding ambient conditions, spurring a move from
universal light level recommendations to a set of custom tailored guidelines for each task based on an application’s lighting zone. When surrounding
conditions are dim, lower levels of light are able to be detected more easily. In these environments, high light level applications can be a source of
discomfort and glare. Careful selection and placement of luminaires eliminates glare and creates a comfortable nighttime environment. Talon’s
assortment of specialty light control optical assemblies combined with a wide array of internal or external house-side shields provide the perfect
solution for every application.