JPS5590906A - Projector - Google Patents

Projector

Info

Publication number
JPS5590906A
JPS5590906A JP16589378A JP16589378A JPS5590906A JP S5590906 A JPS5590906 A JP S5590906A JP 16589378 A JP16589378 A JP 16589378A JP 16589378 A JP16589378 A JP 16589378A JP S5590906 A JPS5590906 A JP S5590906A
Authority
JP
Japan
Prior art keywords
bar
projection
telecentric
mask
arrayed
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
JP16589378A
Other languages
Japanese (ja)
Inventor
Mitsuhiro Midorikawa
Atsuo Tsunoda
Hidetoshi Murase
Noritaka Mochizuki
Setsuo Minami
Yoshiya Matsui
Masazumi Moriwaki
Mikio Suzuta
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 JP16589378A priority Critical patent/JPS5590906A/en
Priority to DE2951452A priority patent/DE2951452A1/en
Priority to US06/105,789 priority patent/US4275962A/en
Priority to GB7944021A priority patent/GB2042759B/en
Priority to FR7931862A priority patent/FR2445544B1/en
Publication of JPS5590906A publication Critical patent/JPS5590906A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Lenses (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To readily form the high-performance projection optical system by disposing a mask to the end face of the grooved block arrayed and fixed with bar-form lenses, in the projection system of the copying machine.
CONSTITUTION: The 1st bar-form lens 101 being telecentric on the exit side and 2nd bar-form lens 102 being telecentric on the incident side, which have a uniform diameter and whose respective optical axis direction lengths are longer than the effective diameter, are arrayed into the periodical groove rows of a block 114 which is composed of metals or plastics such as phenolic resins or polycarbonate resins and has V-grooves or round grooves, in such a manner that they become perpendicular and coaxial to the object surface and projection surface, after which they are fixed by a sheet-form member 115 or the like, thereafter a mask 121 composed of a thin metal plate, plastic sheet or the like allowing the incidence of only the effective luminous flux is mounted to the incident mirror surface. Thereby, the projection optical system which has no leaking light from the gaps between the 1st, 2nd bar- form lenses 101, 102 and grooved block 114 is formed.
COPYRIGHT: (C)1980,JPO&Japio
JP16589378A 1978-12-28 1978-12-28 Projector Pending JPS5590906A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16589378A JPS5590906A (en) 1978-12-28 1978-12-28 Projector
DE2951452A DE2951452A1 (en) 1978-12-28 1979-12-20 PROJECTION DEVICE
US06/105,789 US4275962A (en) 1978-12-28 1979-12-20 Projection device
GB7944021A GB2042759B (en) 1978-12-28 1979-12-21 Projection device
FR7931862A FR2445544B1 (en) 1978-12-28 1979-12-27 MULTIPLE OBJECTIVE PROJECTION DEVICE FOR COPY MACHINES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16589378A JPS5590906A (en) 1978-12-28 1978-12-28 Projector

Publications (1)

Publication Number Publication Date
JPS5590906A true JPS5590906A (en) 1980-07-10

Family

ID=15820971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16589378A Pending JPS5590906A (en) 1978-12-28 1978-12-28 Projector

Country Status (1)

Country Link
JP (1) JPS5590906A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62160401A (en) * 1986-01-08 1987-07-16 Toshiba Corp Optical parts and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62160401A (en) * 1986-01-08 1987-07-16 Toshiba Corp Optical parts and production thereof

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