Prism to provide visibility of a signal light in two directions

Details Prism to provide visibility of a signal light in two directions Prism to provide visibility of a signal light in two directions

1995-06-06

1997-12-09

Nelms, David C.

Optical: systems and elements

Prism

With refracting surface

359833, G02B 504

Patent

active

056966369

ABSTRACT:
An insert is installed at a corner and two adjacent edges of an enclosure for electronic equipment so that a signal light, such as an LED, may be observed from two sides of the enclosure. The insert has a prism to refract light in both directions from an LED or similar signal light supported on the insert in a fixed position relative to the prism. The corner of the prism is rounded to function as a lens. The corner of the enclosure is cut away at the upper edges of the converging sides and the cut-away area filled with the lens. An apron depending from the insert may be welded or otherwise adhered to the interior of the enclosure.

REFERENCES:
patent: 4469407 (1984-09-01), Cowan et al.
patent: 4577941 (1986-03-01), Kubota
patent: 4704000 (1987-11-01), Pekar et al.
patent: 4724533 (1988-02-01), Ohara et al.
patent: 5251117 (1993-10-01), Nagai

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