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NIGHTSKY® Optical Systems
Star-Shield® & Opti-Shield®
State-of-the-Art Optical Systems

Type III - Asymmetric Horizontal Lamp

NightSky® Star-Shield®
Roof Optics

A distribution is classified as Type III - Asymmetric when the 50% maximum candela trace lies within 2.75 MH (Mounting Height) on the street side of the reference line.

Type V - Square Horizontal Lamp

NightSky® Star-Shield®
Roof Optics

A distribution is classified as Type V - Square when the 50% maximum candela is symmetric in all four quadrants.

Type III - Asymmetric Vertical Lamp

NightSky® Opti-Shield®
Louver Optics

A distribution is classified as Type III - Asymmetric when the 50% maximum candela trace lies within 2.75 MH (Mounting Height) on the street side of the reference line.

Type V - Round Vertical Lamp

NightSky® Opti-Shield®
Louver Optics

A distribution is classified as Type V - Round when it has circular symmetry, being essentially the same at all lateral angles around the luminaire.

See examples of Nightsky Friendly products Sternberg carries.

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