GB1342926A - Optical system - Google Patents

Optical system

Info

Publication number
GB1342926A
GB1342926A GB1505671A GB1505671A GB1342926A GB 1342926 A GB1342926 A GB 1342926A GB 1505671 A GB1505671 A GB 1505671A GB 1505671 A GB1505671 A GB 1505671A GB 1342926 A GB1342926 A GB 1342926A
Authority
GB
United Kingdom
Prior art keywords
optical axis
casting
screws
mirror system
angle
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.)
Expired
Application number
GB1505671A
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.)
AB Dick Co
Original Assignee
Multigraphics 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 Multigraphics Inc filed Critical Multigraphics Inc
Publication of GB1342926A publication Critical patent/GB1342926A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/528—Projection optics for slit exposure in which the projection optics remain stationary

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Mounting And Adjusting Of Optical Elements (AREA)

Abstract

1342926 Optical projection systems; ADDRESSOGRAPH MULTIGRAPH CORP 14 May 1971 [18 May 1970] 15056/71 Headings G2A and G2J In a photocopier, the optical projection system comprises a lens system 52 adjustably mounted to have its optical axis 92 perpendicular to object plane 16; a mirror system having two mirrors 72, 78 which are positioned with a preselected angle a there between before insertion into the photo-copier; means mounting the mirror system in the photo-copier so as to reflect the optical axis 92 to be normal to image plane 28; and said mounting means including means to move the mirror system parallel to the bisector 94 of the angle b between normals to the planes 16, 28 so as to correctly focus the image formed by the projection system. In use, mirror support casting 64 is placed in an optical jig and screws 82 are adjusted to give the desired angle a. The angle a is such that, on positioning the casting 64 on a primary support casting 36, screws 88 can angularly adjust the position of the mirror system to properly reflect the optical axis 92. Casting 36 also carries a lens plate 42, the position of which may be adjusted by screws 44 to accurately position the lens optical axis perpendicular to the plane 16. In order to obtain optimum image resolution, the screws 88 are used to adjust the casting 64 linearly along the bisector 94. If the magnification ratio is not important, no further adjustments are necessary. However, if a definite magnification ratio is required, the lens system 52 is moved along its optical axis 92, and the mirror system is then re-adjusted along the bisector 94.
GB1505671A 1970-05-18 1971-05-14 Optical system Expired GB1342926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3082870A 1970-05-18 1970-05-18

Publications (1)

Publication Number Publication Date
GB1342926A true GB1342926A (en) 1974-01-10

Family

ID=21856255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1505671A Expired GB1342926A (en) 1970-05-18 1971-05-14 Optical system

Country Status (1)

Country Link
GB (1) GB1342926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752099A (en) * 1995-09-11 1998-05-12 Asahi Kogaku Kogyo Kabushiki Kaisha Optical unit for detecting a focus state

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752099A (en) * 1995-09-11 1998-05-12 Asahi Kogaku Kogyo Kabushiki Kaisha Optical unit for detecting a focus state
GB2305046B (en) * 1995-09-11 1999-10-13 Asahi Optical Co Ltd Optical unit for detecting a focus state

Similar Documents

Publication Publication Date Title
US3879112A (en) Adjustable mirror mount
GB1074066A (en) Optical apparatus for a flow type scanning system
GB1260920A (en) Improvements in and relating to photographic exposure arrangements
GB1291652A (en) Improvements in and relating to optical arrangements
GB1382148A (en) Projection exposure systems and a method of positioning therein
GB1342926A (en) Optical system
GB1194813A (en) Improvements in and relating to Optical Arrangements
ES440012A1 (en) Optical apparatus in which light can be projected to at least one image plane
GB1336819A (en) Optical projection system
US2547232A (en) Range finder with light beam correction
GB1046783A (en) Optical apparatus
GB1272333A (en) Apparatus for determining the crystallographic directions of a single crystal by means of a beam of x-rays
GB1466908A (en) Micro-film camera with film sheet carrier plate
GB1210055A (en) Improvements in and relating to photographic exposure arrangements
GB1223409A (en) Improvements in and relating to photo-copying arrangements
US3689133A (en) Optical system having lens and two movable mirrors
GB991287A (en) Xerographic enlarging apparatus
US3126807A (en) Holders for photographic negatives and the like
US2486849A (en) Right-angle image reverser for cameras
US2905052A (en) Copying camera
GB1216581A (en) Improvements in overhead projectors
GB1344156A (en) Copying camera for anamorphotic and orthomorphotic changes of scale
GB980195A (en) A combined photographic enlarging,viewing and projecting apparatus
GB987151A (en) Optical projection apparatus
GB1045740A (en) Improvements relating to photographic enlarging apparatus

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees