Miniature and large aperture wide-angle photographing lens

Details Miniature and large aperture wide-angle photographing lens Miniature and large aperture wide-angle photographing lens

1977-09-07

1979-04-24

Clark, Conrad J.

G02B 1304

Patent

active

041508726

ABSTRACT:
A miniature and large aperture wide-angle lens is composed of ten or eleven lenses grouped in nine lens components. In order from the object to the image side, the first lens component is a positive lens, and the second, third and fourth lens components are each negative meniscus lenses. The fifth lens components is a thick positive lens. The sixth lens component is a positive lens, and a diaphragm is disposed between the fifth and sixth lens components. The seventh lens component is a negative lens. The eighth lens component comprises a negative lens and a positive lens cemented together to form a positive lens. The ninth lens component comprises either one positive lens or two positive lenses.

REFERENCES:
patent: 3549241 (1968-10-01), Mori
patent: 4013350 (1977-03-01), Ogawa

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