Illumination optical system

Details Illumination optical system Illumination optical system

1989-05-16

1990-09-04

Sikes, William L.

Illumination

Supported by vehicle structure

Condition responsive

350 9626, 362335, G02B 632

Patent

active

049539370

ABSTRACT:
An illumination optical system consisting of a small number of lens components and having a very uniform light distribution characteristic wherein a light source having a two-dimensional extent, a positive lens system so arranged as to locate the front focal point thereof in the vicinity of the light source and having at least one aspherical surface, and a surface to be illuminated are arranged.

REFERENCES:
patent: 4294511 (1981-10-01), Yamashita et al.
patent: 4530578 (1985-07-01), Kato
patent: 4536827 (1985-08-01), Berthold, III et al.
patent: 4674844 (1987-06-01), Nishioka et al.
patent: 4683524 (1987-07-01), Ohta
patent: 4824225 (1989-04-01), Nishioka

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