JPS574019A - Mirror lens for erecting real image - Google Patents

Mirror lens for erecting real image

Info

Publication number
JPS574019A
JPS574019A JP7826780A JP7826780A JPS574019A JP S574019 A JPS574019 A JP S574019A JP 7826780 A JP7826780 A JP 7826780A JP 7826780 A JP7826780 A JP 7826780A JP S574019 A JPS574019 A JP S574019A
Authority
JP
Japan
Prior art keywords
mirror
curvature
refracting
real image
refracting system
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
JP7826780A
Other languages
Japanese (ja)
Inventor
Nobuo Sakuma
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 JP7826780A priority Critical patent/JPS574019A/en
Publication of JPS574019A publication Critical patent/JPS574019A/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
    • G02B17/002—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)
  • Lenses (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE:To obtain a mirror lens having no curvature of the image surface, by constituting a lens, which is used in the exposing optical system of a copying machine or the like, by a refracting system having a positive power and a reflecting system which has a curvature approximately equal to the curvature of the image surface of this refracting system and has a positive power and is so arranged that the curvature center coincides with the rear side principal point of the refracting system. CONSTITUTION:An object 11 and a refracting system 12 are arranged orthogonally, and a half mirror 16 is arranged at 45 deg. for the optical axis in the optical path between them. The light from the object 11 is reflected by the half mirror while having the quantity of light reduced to the half and is focused as an inverted real image 14 on a concave mirror 13 by refracting system but is reflected by the concave mirror 13 and passes through the refracting system 12 again and permeates the half mirror 16 while having the quantity of light reduced to the half and is focused as an erecting real image 15 in a position equivalent to the object 11. Thus, the image 15 is focused in a position different from the object 11.
JP7826780A 1980-06-10 1980-06-10 Mirror lens for erecting real image Pending JPS574019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7826780A JPS574019A (en) 1980-06-10 1980-06-10 Mirror lens for erecting real image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7826780A JPS574019A (en) 1980-06-10 1980-06-10 Mirror lens for erecting real image

Publications (1)

Publication Number Publication Date
JPS574019A true JPS574019A (en) 1982-01-09

Family

ID=13657197

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7826780A Pending JPS574019A (en) 1980-06-10 1980-06-10 Mirror lens for erecting real image

Country Status (1)

Country Link
JP (1) JPS574019A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532689A (en) * 1976-06-21 1978-01-11 Sanyo Chemical Ind Ltd New printing paste

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS532689A (en) * 1976-06-21 1978-01-11 Sanyo Chemical Ind Ltd New printing paste

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