Light projection systems

Details Light projection systems Light projection systems

1981-10-13

1984-07-03

Haroian, Harry N.

Optics: image projectors

Miscellaneous

353 98, 353 85, G03B 2100

Patent

active

044576005

ABSTRACT:
A light directing system includes a reflector whose shape in the direction from pole to open end varies from parabolic to elliptical with successively nearer remote foci. The output of the reflector is focused to a common focal point in a lens whose magnification varies from negative to positive in the radial direction from central to outer regions of the lens. The marginal part of the output beam is added to the central part of the beam in a mirror system. The resultant beam is then divided and recombined in an amorphics integrating lens system and then transferred to a film gate and projection lens set.

REFERENCES:
patent: Re17038 (1928-07-01), Ballman et al.
patent: 2186123 (1940-01-01), Rantsch et al.
patent: 2309788 (1943-02-01), Ramberg
patent: 2476898 (1949-07-01), Nicoll
patent: 3296923 (1967-01-01), Miles
patent: 3922085 (1975-11-01), Sheets
patent: 4061420 (1977-12-01), Kaprelian et al.

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