JPS57211170A - Optical system for copying machine - Google Patents

Optical system for copying machine

Info

Publication number
JPS57211170A
JPS57211170A JP9640281A JP9640281A JPS57211170A JP S57211170 A JPS57211170 A JP S57211170A JP 9640281 A JP9640281 A JP 9640281A JP 9640281 A JP9640281 A JP 9640281A JP S57211170 A JPS57211170 A JP S57211170A
Authority
JP
Japan
Prior art keywords
lens
face
reflective
interference film
multilayered interference
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
JP9640281A
Other languages
Japanese (ja)
Inventor
Michihiro Tokuhara
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 JP9640281A priority Critical patent/JPS57211170A/en
Publication of JPS57211170A publication Critical patent/JPS57211170A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To compensate the color sensitivity of a photoreceptor or the like inexpensively, by providing a transmissive multilayered interference film on the lens face, which faces to the reflective face, of an orthometachromatic reflective lens of a real size system and allowing the luminous flux to pass through this lens face twice. CONSTITUTION:A transmissive multilayered interference film 10 is provided on the lens face, which faces to a mirror 5a, of an orthometachromatic reflective lens of a real size system, namely, the second face of a meniscus lens III. For example, the multilayered interference film 10 consists of first, third, and fifth layers which consist of TiO2 and have a high refractive index and second, fourth, and sixth layers which consist of MgF2 and have a low refractive index, and a lens which consists of Al or the like and has a high reflection factor is used as the mirror 5a.
JP9640281A 1981-06-22 1981-06-22 Optical system for copying machine Pending JPS57211170A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9640281A JPS57211170A (en) 1981-06-22 1981-06-22 Optical system for copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9640281A JPS57211170A (en) 1981-06-22 1981-06-22 Optical system for copying machine

Publications (1)

Publication Number Publication Date
JPS57211170A true JPS57211170A (en) 1982-12-24

Family

ID=14163962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9640281A Pending JPS57211170A (en) 1981-06-22 1981-06-22 Optical system for copying machine

Country Status (1)

Country Link
JP (1) JPS57211170A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508599B2 (en) 2001-12-12 2009-03-24 Nikon Corporation Optical system with wavelength selecting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7508599B2 (en) 2001-12-12 2009-03-24 Nikon Corporation Optical system with wavelength selecting device
US7826143B2 (en) 2001-12-12 2010-11-02 Nikon Corporation Optical system with wavelength selecting device

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