JPS5564263A - Aperture device - Google Patents

Aperture device

Info

Publication number
JPS5564263A
JPS5564263A JP13819078A JP13819078A JPS5564263A JP S5564263 A JPS5564263 A JP S5564263A JP 13819078 A JP13819078 A JP 13819078A JP 13819078 A JP13819078 A JP 13819078A JP S5564263 A JPS5564263 A JP S5564263A
Authority
JP
Japan
Prior art keywords
mirror
mirrors
original
adjustment
aperture device
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
JP13819078A
Other languages
Japanese (ja)
Inventor
Keizo Nishiyama
Hideyo Takahata
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 JP13819078A priority Critical patent/JPS5564263A/en
Publication of JPS5564263A publication Critical patent/JPS5564263A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE: To simultaneously perform adjustment of exposure and the adjustment of uneven illuminance in the slit direction relating to cos4 law or the like by moving the aperture device nearly in the normal direction of a reflecting mirror and changing the removal amount of outer side luminous fluxes.
CONSTITUTION: The slit-form luminous flux from the original placed still on an original platen 1 is reflected by scanning mirrors 2, 3 and enters an imaging lens 4, thence it is projected onto a photoreceptor 7 by reflecting mirrors 5, 6. The mirrors 2, 3 move parallel to the platen 1 and the scanning speed of the mirror 2 is twice that of the mirror 3. The optical path length from the original up to the stationary lens 4 is maintained always constant and the image is formed without any magnification change always during scanning and is projected. Blades 8, 9 are integrated by an axis 10 so as to encircle the mirror 6. The removal amount of the outer side luminous fluxes 11, 12 is changed by moving the aperture device nearly in the normal direction of the reflecting mirror 6, whereby exposure adjustment is accomplished.
COPYRIGHT: (C)1980,JPO&Japio
JP13819078A 1978-11-09 1978-11-09 Aperture device Pending JPS5564263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13819078A JPS5564263A (en) 1978-11-09 1978-11-09 Aperture device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13819078A JPS5564263A (en) 1978-11-09 1978-11-09 Aperture device

Publications (1)

Publication Number Publication Date
JPS5564263A true JPS5564263A (en) 1980-05-14

Family

ID=15216172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13819078A Pending JPS5564263A (en) 1978-11-09 1978-11-09 Aperture device

Country Status (1)

Country Link
JP (1) JPS5564263A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315022A (en) * 2017-07-21 2017-11-03 中国地质大学（武汉） A kind of X-ray collimation location adjusting device and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107315022A (en) * 2017-07-21 2017-11-03 中国地质大学（武汉） A kind of X-ray collimation location adjusting device and system

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