Compact photographic objective

Details Compact photographic objective Compact photographic objective

1981-12-29

1983-11-08

Corbin, John K.

350469, G02B 934, G02B 1318

Patent

active

044138881

ABSTRACT:
The disclosed photographic objective includes, from front to rear, a first lens of meniscus form convex toward the front and having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens of meniscus form which is concave toward the front and has a negative refractive power and whose front surface is aspheric, with the refractive power and configuration of each lens appropriately set to achieve compactness while permitting good correction of aberrations.

REFERENCES:
patent: 3951523 (1976-04-01), Nishimoto
patent: 3998527 (1976-12-01), Ikeda et al.
patent: 4359271 (1982-11-01), Mihara
patent: 4368956 (1983-01-01), Yamada et al.

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