JPS6478214A - Convergence optical system - Google Patents

Convergence optical system

Info

Publication number
JPS6478214A
JPS6478214A JP62235369A JP23536987A JPS6478214A JP S6478214 A JPS6478214 A JP S6478214A JP 62235369 A JP62235369 A JP 62235369A JP 23536987 A JP23536987 A JP 23536987A JP S6478214 A JPS6478214 A JP S6478214A
Authority
JP
Japan
Prior art keywords
luminous flux
optical system
mirror
reflecting surface
directed
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
JP62235369A
Other languages
Japanese (ja)
Inventor
Michio Kono
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 JP62235369A priority Critical patent/JPS6478214A/en
Publication of JPS6478214A publication Critical patent/JPS6478214A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)

Abstract

PURPOSE:To simplify the constitution and to reduce the cost by converging luminous flux which is made incident on a reflection optical system between two reflecting mirrors by multipath reflection and then projecting it from the reflection optical system. CONSTITUTION:The luminous flux 1 is increased in luminous flux diameter by a beam expander, etc., and then made incident on the reflecting surface of a polygon mirror 51. The luminous flux reflected by the polygon mirror 51 is made incident on a plane mirror M1 first, reflected by its reflecting surface, and then directed to a concave mirror M2. Here, the luminous flux incident on the concave mirror M2 is reflected again by its reflecting surface and directed to a plane mirror M1. Then the luminous flux is converged gradually because of the positive refracting power that the concave reflecting surface of the plane mirror M2 has and the luminous flux becomes converged luminous flux when exiting from the convergence optical system consisting of the plane mirror M1 and concave mirror M2 and is directed to a surface R to be scanned. Consequently, the luminous flux can be converged by the simple optical system with high light utilization efficiency and this is usable as an optical system replacing the scanning lens of a scanning optical system.
JP62235369A 1987-09-18 1987-09-18 Convergence optical system Pending JPS6478214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62235369A JPS6478214A (en) 1987-09-18 1987-09-18 Convergence optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62235369A JPS6478214A (en) 1987-09-18 1987-09-18 Convergence optical system

Publications (1)

Publication Number Publication Date
JPS6478214A true JPS6478214A (en) 1989-03-23

Family

ID=16985065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62235369A Pending JPS6478214A (en) 1987-09-18 1987-09-18 Convergence optical system

Country Status (1)

Country Link
JP (1) JPS6478214A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6198563B1 (en) 1996-05-17 2001-03-06 Ricoh Company, Ltd. Optical scanning apparatus with improved design flexibility

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6198563B1 (en) 1996-05-17 2001-03-06 Ricoh Company, Ltd. Optical scanning apparatus with improved design flexibility

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