JPS6239817A - Projector - Google Patents

Projector

Info

Publication number
JPS6239817A
JPS6239817A JP17947485A JP17947485A JPS6239817A JP S6239817 A JPS6239817 A JP S6239817A JP 17947485 A JP17947485 A JP 17947485A JP 17947485 A JP17947485 A JP 17947485A JP S6239817 A JPS6239817 A JP S6239817A
Authority
JP
Japan
Prior art keywords
mirror
lens
interval
distance
optical axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17947485A
Other languages
Japanese (ja)
Inventor
Fumitaka Yoshimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP17947485A priority Critical patent/JPS6239817A/en
Publication of JPS6239817A publication Critical patent/JPS6239817A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a small-sized device by shortening the whole optical path length, by providing an optical system which has arranged plural lenses and plural mirrors in parallel roughly.
CONSTITUTION: On an optical axis X1 of the first lens 11 of an object side, the first mirror 12 is placed at an interval of a distance l1. The second mirror 13 is placed in parallel roughly to the first lens 11 and also opposed at an interval of a distance l2 to the first mirror 12. An optical axis X2 of the second lens 14 is placed so as to go to parallel to the optical axis X1 of the first lens 11, and it is opposed at an interval of a distance l3 to the second mirror 13. An incident light Y1 from an object (not shown in the figure) passes through the first lens 11, reflected by the first mirror 12 and led to the second mirror 13, reflected and made incident on the second lens 14, and goes to an emitted light Y2 and emitted to a projection surface (not shown in the figure). Accordingly, the whole optical path length l of the optical system goes to about l=l1+l2+l3.
COPYRIGHT: (C)1987,JPO&Japio
JP17947485A 1985-08-16 1985-08-16 Projector Pending JPS6239817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17947485A JPS6239817A (en) 1985-08-16 1985-08-16 Projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17947485A JPS6239817A (en) 1985-08-16 1985-08-16 Projector

Publications (1)

Publication Number Publication Date
JPS6239817A true JPS6239817A (en) 1987-02-20

Family

ID=16066476

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17947485A Pending JPS6239817A (en) 1985-08-16 1985-08-16 Projector

Country Status (1)

Country Link
JP (1) JPS6239817A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10967317B2 (en) 2015-08-18 2021-04-06 W. L. Gore & Associates, Inc. Filter assembly with curved inlet guide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10967317B2 (en) 2015-08-18 2021-04-06 W. L. Gore & Associates, Inc. Filter assembly with curved inlet guide

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