Title:
【発明の名称】投影光学系の瞳共役結合装置
Document Type and Number:
Japanese Patent JP3320862
Kind Code:
B2
Abstract:
A pupil conjugate-coupling device in a projecting optical system includes a first projection lens system which forms an intermediate image of an image indicating element, a second projection lens system which projects the intermediate image onto a screen, said first and second projection lens systems having optical axes intersecting at a predetermined angle, and an optical element having structural periodicity positioned between the first and second projection lens systems. The optical element has a positive power and a prism function for deflecting a bundle of rays transmitted through the first projection lens system towards the optical axis of the second projection lens system to thereby couple pupils of the first and second projection lens systems. The optical element is deviated from an intermediate image forming position by a predetermined offset in the optical axis direction thereof.
Inventors:
Yasuyuki Teshima
Yasunori Izawa
Nobutaka Minefuji
Ryota Ogawa
Yasunori Izawa
Nobutaka Minefuji
Ryota Ogawa
Application Number:
JP26887193A
Publication Date:
September 03, 2002
Filing Date:
October 27, 1993
Export Citation:
Assignee:
Asahi Optical Co., Ltd.
International Classes:
G02B27/18; G02B3/08; G02B13/16; G03B21/132; (IPC1-7): G02B27/18
Attorney, Agent or Firm:
Kunio Miura