PHOTOGRAPHING OPTICAL SYSTEM INCLUDING PLASTIC LENS

Title:

PHOTOGRAPHING OPTICAL SYSTEM INCLUDING PLASTIC LENS

Document Type and Number:

Japanese Patent JPH06331889

Kind Code:

A

Abstract:

PURPOSE: To prevent optical performance from being deteriorated by ultraviolet rays even when a plastic lens is included.

CONSTITUTION: In a zoom lens for a lens shutter camera constituted of positive and negative two groups Gr1 and Gr2; a UV cut filter FL cutting the ultraviolet rays radiated from a subject side is provided. A double convex lens is made of polyolefine resin, but it is not influenced by the ultraviolet rays because the ultraviolet rays are cut by the UV cut filter FL.

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Inventors:

OMORI HIROSHI
SUGIHARA YASUMASA
HASEGAWA RIEKO
MUKAI HIROSHI

Application Number:

JP11668493A

Publication Date:

December 02, 1994

Filing Date:

May 19, 1993

Export Citation:

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Assignee:

MINOLTA CAMERA KK

International Classes:

G02B13/14; G02B13/18; G02B15/16; (IPC1-7): G02B15/16; G02B13/14; G02B13/18

Attorney, Agent or Firm:

Shizuo Sano

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