JPS572017A - Reflection type equal magnification image forming element - Google Patents

Reflection type equal magnification image forming element

Info

Publication number
JPS572017A
JPS572017A JP7630480A JP7630480A JPS572017A JP S572017 A JPS572017 A JP S572017A JP 7630480 A JP7630480 A JP 7630480A JP 7630480 A JP7630480 A JP 7630480A JP S572017 A JPS572017 A JP S572017A
Authority
JP
Japan
Prior art keywords
image forming
forming element
array
radius
convex
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
JP7630480A
Other languages
Japanese (ja)
Inventor
Yoshio Fukushima
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7630480A priority Critical patent/JPS572017A/en
Publication of JPS572017A publication Critical patent/JPS572017A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0856—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors
    • G02B17/086—Catadioptric systems comprising a refractive element with a reflective surface, the reflection taking place inside the element, e.g. Mangin mirrors wherein the system is made of a single block of optical material, e.g. solid catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/002—Arrays of reflective systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/008—Systems specially adapted to form image relays or chained systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Lenses (AREA)

Abstract

PURPOSE:To make a device small-sized, by using an image forming element having two symmetrical partial spherical surfaces which are equal in the radius of curvature, convex in the front and adjacent in the vertical direction, on the front surface, and having one partial cylindrical reflection surface which has a center axis in the vertical direction and is convex in the rear, on the rear surface, relating to an image forming element to be used for an exposure optical system of a copying machine. CONSTITUTION:An image forming element 11 is a transparent body, and is formed in the shape of a rectangular parallelepiped having the front surface consisting of two spherical surfaces 12, 13 which are adjacent and equal in the radius, and having the rear surface consisting of a right cylindrical reflection surface 14. The reflection surface is manufactured by means of Al vapor deposition, etc., and an upper surface 15, a lower surface 16 and both sides 17, 18, of the image forming element is coated in black so that light absorption is elevated. When an image formation element array 19 which has been prepared in this way is used for an exposure optical system of a direct type copying machine, the image forming element array 19 is placed horizontally under an original table 22 on which an original 21 is put, and in its front is placed a mirror 23 having a shape which has made two reflection surfaces meet at right angles, so that its right-angles apex is directed toward the center part of the array 19.
JP7630480A 1980-06-06 1980-06-06 Reflection type equal magnification image forming element Pending JPS572017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7630480A JPS572017A (en) 1980-06-06 1980-06-06 Reflection type equal magnification image forming element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7630480A JPS572017A (en) 1980-06-06 1980-06-06 Reflection type equal magnification image forming element

Publications (1)

Publication Number Publication Date
JPS572017A true JPS572017A (en) 1982-01-07

Family

ID=13601623

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7630480A Pending JPS572017A (en) 1980-06-06 1980-06-06 Reflection type equal magnification image forming element

Country Status (1)

Country Link
JP (1) JPS572017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206756A (en) * 2005-06-02 2014-10-30 カール・ツァイス・エスエムティー・ゲーエムベーハー Microlithography projection objective

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014206756A (en) * 2005-06-02 2014-10-30 カール・ツァイス・エスエムティー・ゲーエムベーハー Microlithography projection objective
US10281824B2 (en) 2005-06-02 2019-05-07 Carl Zeiss Smt Gmbh Microlithography projection objective

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