JPS5590912A - Projector - Google Patents

Projector

Info

Publication number
JPS5590912A
JPS5590912A JP16604978A JP16604978A JPS5590912A JP S5590912 A JPS5590912 A JP S5590912A JP 16604978 A JP16604978 A JP 16604978A JP 16604978 A JP16604978 A JP 16604978A JP S5590912 A JPS5590912 A JP S5590912A
Authority
JP
Japan
Prior art keywords
bar
lens
projection
projection surface
lenses
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.)
Granted
Application number
JP16604978A
Other languages
Japanese (ja)
Other versions
JPS635739B2 (en
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 JP16604978A priority Critical patent/JPS5590912A/en
Priority to US06/105,789 priority patent/US4275962A/en
Priority to DE2951452A priority patent/DE2951452A1/en
Priority to GB7944021A priority patent/GB2042759B/en
Priority to FR7931862A priority patent/FR2445544B1/en
Publication of JPS5590912A publication Critical patent/JPS5590912A/en
Publication of JPS635739B2 publication Critical patent/JPS635739B2/ja
Granted 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 form the high-performance projection optical system by specifically supporting the specific bar-form lenses by supports, in the projection system of the copying machine.
CONSTITUTION: The 1st bar-form lens 40 being telecentric on the exit side and 2nd bar-form lens 41 being telecentric on the incident side, which have a uniform diameter and whose respective lengths in the optical axis direction are 2W60 times the effective diameter are inserted and fixed in a lens barrel 101 so as to become perpendicularly coaxial to the object surface and projection surface. As a result of this, the main rays emitting from or entering the 1st, 2nd bar-form lenses 40, 41 become parallel to the optical axis and the light forming intermediate images is reimaged on the projection surface with good efficiency without losing the quantity of light by the 2nd bar-form lens 41. Here, if an intermediate mask which defines the light intensity distribution on the projection surface is disposed between the 1st and 2nd bar-form lenses 40, 41 is disposed, it is more effectual.
COPYRIGHT: (C)1980,JPO&Japio
JP16604978A 1978-12-28 1978-12-28 Projector Granted JPS5590912A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP16604978A JPS5590912A (en) 1978-12-28 1978-12-28 Projector
US06/105,789 US4275962A (en) 1978-12-28 1979-12-20 Projection device
DE2951452A DE2951452A1 (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
JP16604978A JPS5590912A (en) 1978-12-28 1978-12-28 Projector

Publications (2)

Publication Number Publication Date
JPS5590912A true JPS5590912A (en) 1980-07-10
JPS635739B2 JPS635739B2 (en) 1988-02-04

Family

ID=15824006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16604978A Granted JPS5590912A (en) 1978-12-28 1978-12-28 Projector

Country Status (1)

Country Link
JP (1) JPS5590912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010204208A (en) * 2009-02-27 2010-09-16 Oki Data Corp Lens unit, led head, exposure device, image forming apparatus, and reader
WO2014171317A1 (en) * 2013-04-15 2014-10-23 Ｈｏｙａ Ｃａｎｄｅｏ Ｏｐｔｒｏｎｉｃｓ株式会社 Photoirradiation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010204208A (en) * 2009-02-27 2010-09-16 Oki Data Corp Lens unit, led head, exposure device, image forming apparatus, and reader
WO2014171317A1 (en) * 2013-04-15 2014-10-23 Ｈｏｙａ Ｃａｎｄｅｏ Ｏｐｔｒｏｎｉｃｓ株式会社 Photoirradiation device
JPWO2014171317A1 (en) * 2013-04-15 2017-02-23 Ｈｏｙａ Ｃａｎｄｅｏ Ｏｐｔｒｏｎｉｃｓ株式会社 Light irradiation device

Also Published As

Publication number Publication date
JPS635739B2 (en) 1988-02-04

Similar Documents

Publication Publication Date Title
JPS5489749A (en) Lighting optical system of endoscope
JPS52113753A (en) Zoom lens capable of simply changing variable focal length range
JPS5588001A (en) Distance measuring optical system
JPS5425736A (en) Electrophotographic apparatus
JPS57161825A (en) Compound eye projecting device
JPS57208523A (en) Telecentric variable magnification lighting system
JPS5590912A (en) Projector
JPS52132851A (en) Optical detector of scanning type
JPS56128910A (en) Projector
JPS5590913A (en) Projector
JPS5328379A (en) Electron lens device
JPS5590914A (en) Projector
JPS5590918A (en) Projector
JPS5590917A (en) Projector
JPS547944A (en) Optical lens cnnector
JPS53106118A (en) Lens iris for optical system
JPS5293234A (en) Color separation optic for color television camera
JPS5315144A (en) Exposure device for variable magnification type electrophotographic copier
JPS53122426A (en) Projector
JPS5590915A (en) Projector
JPS5583016A (en) Projector
JPS5572806A (en) Contour display unit
JPS52119321A (en) Obtaining uniform distribution of illumination of image for projector
JPS5589804A (en) Projector
JPS5574508A (en) Projector