JPS5627101A - Projector - Google Patents

Projector

Info

Publication number
JPS5627101A
JPS5627101A JP10249379A JP10249379A JPS5627101A JP S5627101 A JPS5627101 A JP S5627101A JP 10249379 A JP10249379 A JP 10249379A JP 10249379 A JP10249379 A JP 10249379A JP S5627101 A JPS5627101 A JP S5627101A
Authority
JP
Japan
Prior art keywords
lens
optical
optical axis
axis direction
effective diameter
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
JP10249379A
Other languages
Japanese (ja)
Other versions
JPS6311647B2 (en
Inventor
Noritaka Mochizuki
Setsuo Minami
Yoshiya Matsui
Tadashi Taniguchi
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 JP10249379A priority Critical patent/JPS5627101A/en
Priority to DE19803029327 priority patent/DE3029327A1/en
Priority to FR8017595A priority patent/FR2463423B1/en
Publication of JPS5627101A publication Critical patent/JPS5627101A/en
Priority to US06/647,270 priority patent/US4626082A/en
Publication of JPS6311647B2 publication Critical patent/JPS6311647B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To make optical adjustment easy and stabilize optical performance by forming the element lens system in a projector comprising a compound eye optical system into the only transmission type lens of an optical axis direction length longer than the lens effective diameter. CONSTITUTION:A lens 18 has a length longer in the optical axis direction than the lens effective diameter. An object 19 is imaged as an inverted intermediate image 20 in the intermediate part in the optical axis direction of the lens 18 and is finally formed as an erecting unmagnification image 21 on the projecting plane. An absorbing layer 22 is set on the outer side of the lens 18 and the rays beyond the lens effective diameter region are annihilated by the absorbing layer 22. Hereupon, the intensity distribution of this element lens system becomes a Gauss distribution and it is possible to make nearly a uniform intensity distribution on the image plane by arraying a plurality of these in more than one row at an equal space within the plane normal to the optical axis. It is desirable that the lens 18 satisfies condition formulas 1, 2, 3. In this way, the optical adjustment may be made easy and the optical performance is stabilized.
JP10249379A 1979-08-10 1979-08-10 Projector Granted JPS5627101A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10249379A JPS5627101A (en) 1979-08-10 1979-08-10 Projector
DE19803029327 DE3029327A1 (en) 1979-08-10 1980-08-01 PROJECTION DEVICE
FR8017595A FR2463423B1 (en) 1979-08-10 1980-08-08 OPTICAL PROJECTION DEVICE
US06/647,270 US4626082A (en) 1979-08-10 1984-09-04 Projecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10249379A JPS5627101A (en) 1979-08-10 1979-08-10 Projector

Publications (2)

Publication Number Publication Date
JPS5627101A true JPS5627101A (en) 1981-03-16
JPS6311647B2 JPS6311647B2 (en) 1988-03-15

Family

ID=14328939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10249379A Granted JPS5627101A (en) 1979-08-10 1979-08-10 Projector

Country Status (1)

Country Link
JP (1) JPS5627101A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147120U (en) * 1983-03-24 1984-10-01 株式会社東芝 Paper sheet detection device
JP2013080145A (en) * 2011-10-05 2013-05-02 Rohm Co Ltd Lens array, lens unit and image reading apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147120U (en) * 1983-03-24 1984-10-01 株式会社東芝 Paper sheet detection device
JP2013080145A (en) * 2011-10-05 2013-05-02 Rohm Co Ltd Lens array, lens unit and image reading apparatus

Also Published As

Publication number Publication date
JPS6311647B2 (en) 1988-03-15

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