Lamp assembly

Details Lamp assembly Lamp assembly

1985-12-16

1987-08-25

Terapane, John F.

Illumination

Light source and modifier

Plural serial lens elements or components

362311, 362331, 362335, 362339, 362351, 362375, F21V 500

Patent

active

046897283

ABSTRACT:
A lamp assembly having the lamp housing for containing a bulb and with an opening, optical elements installed in the housing in such a manner as to convert the light from the bulb into parallel rays of light, a condenser lens installed in the opening of the housing for converting the parallel rays of light into beams, the condenser lens being provided with a plurality of convex surfaces on the side facing to the optical elements and a plurality of concave surfaces on the opposite side of it corresponding to the convex surfaces, slit plate having portions pervious to light installed in the opening, the improvement comprising that both focuses of the convex surface and the concave surface are settled in such a manner that they are placed on the same point on the center line of the portion pervious to light of the slit plate.

REFERENCES:
patent: 3368078 (1968-02-01), Flint et al.
patent: 4158222 (1979-06-01), Cook
patent: 4520434 (1985-05-01), Birt
patent: 4542448 (1985-09-01), Yamai et al.

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