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Cut-Off
NightSky® Optical Systems

Examples of Luminaires with Cut-Off Optical Systems

cut-off light distribution diagram

A light distribution where the candela value does not exceed 2.5% of the maximum intensity at or above 90 degrees vertical from nadir and 10% at or above a vertical angle of 80 degrees. This applies to all symmetrical angles around the luminaire. Shown at right is A850 Acorn vertical lamp with Opti-Shield.

A850/LO5 photo A850/LO5
1913G3 photo 1914G3
1843/RO5/FC photo 1843/RO5/FC

10 New Optical Systems Preserve the NightSky®

Star-Shield ROH2-S photo

Star-Shield ROH2-S

Roof Optics Type II

Star-Shield ROH3-S photo

Star-Shield ROH3-S

Roof Optics Type III

Star-Shield ROH5-S photo

Star-Shield ROH5-S

Roof Optics Type V

Star-Shield ROH2-L photo

Star-Shield ROH2-L

Roof Optics Type II

Star-Shield ROH3-L photo

Star-Shield ROH3-L

Roof Optics Type III

Star-Shield ROH4-L photo

Star-Shield ROH4-L

Roof Optics Type IV

Star-Shield ROH5-L photo

Star-Shield ROH5-L

Roof Optics Type V

Star-Shield ROV3-L photo

Star-Shield ROV3-L

Roof Optics Type III

Star-Shield ROV5-L photo

Star-Shield ROV5-L

Roof Optics Type V

Star-Shield LO3-S (LO5-S) photo

Opti-Shield LO3-S (LO5-S)

Louver Optics Type III or V

See examples of Nightsky Friendly products Sternberg carries.

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