Photographic lens system

Details Photographic lens system Photographic lens system

1985-08-16

1988-11-29

Corbin, John K.

350464, 350465, G02B 1318, G02B 960, G02B 962

Patent

active

047877219

ABSTRACT:
An improved compact telephoto type lens system is provided, including a front lens group of a positive refractive power having at least four lens components with one of the lens components having an aspheric surface and a rear lens group of a negative refractive power. The aspheric lens component can be a composite lens component of a glass substrate with a thin plastic aspheric surface.

REFERENCES:
patent: 4458991 (1984-07-01), Yamada
patent: 4477154 (1984-10-01), Sato
patent: 4596447 (1986-06-01), Yamada et al.
patent: 4659190 (1987-04-01), Mihara

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