JPS51144650A - Photo-divider - Google Patents

Photo-divider

Info

Publication number
JPS51144650A
JPS51144650A JP50068781A JP6878175A JPS51144650A JP S51144650 A JPS51144650 A JP S51144650A JP 50068781 A JP50068781 A JP 50068781A JP 6878175 A JP6878175 A JP 6878175A JP S51144650 A JPS51144650 A JP S51144650A
Authority
JP
Japan
Prior art keywords
photo
divider
emission surface
light
focusing
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
JP50068781A
Other languages
Japanese (ja)
Inventor
Kazuya Matsumoto
Susumu Matsumura
Aiichiro Koyama
Yoichi Okuno
Tokuichi Tsunekawa
Tadashi Ito
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 JP50068781A priority Critical patent/JPS51144650A/en
Priority to US05/691,628 priority patent/US4103153A/en
Publication of JPS51144650A publication Critical patent/JPS51144650A/en
Priority to US05/869,447 priority patent/US4178084A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Elements Other Than Lenses (AREA)
  • Exposure Control For Cameras (AREA)

Abstract

PURPOSE: Using a diffraction grating that forms volume-shaped hologram about a photo-divider provides self-focusing characteristics to the diffraction light and reflects the diffraction light on an emission surface and the opposite surface, focusing the light near the emission surface.
COPYRIGHT: (C)1976,JPO&Japio
JP50068781A 1975-06-06 1975-06-06 Photo-divider Pending JPS51144650A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50068781A JPS51144650A (en) 1975-06-06 1975-06-06 Photo-divider
US05/691,628 US4103153A (en) 1975-06-06 1976-06-01 Device for measuring light incident on an image forming optical system
US05/869,447 US4178084A (en) 1975-06-06 1978-01-16 Device for measuring light incident on an image forming optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50068781A JPS51144650A (en) 1975-06-06 1975-06-06 Photo-divider

Publications (1)

Publication Number Publication Date
JPS51144650A true JPS51144650A (en) 1976-12-11

Family

ID=13383607

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50068781A Pending JPS51144650A (en) 1975-06-06 1975-06-06 Photo-divider

Country Status (1)

Country Link
JP (1) JPS51144650A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108710205A (en) * 2018-05-16 2018-10-26 电子科技大学 A kind of optical scanner holography self-focusing method based on edge gray difference function

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464337A (en) * 1966-04-15 1969-09-02 Pentacon Dresden Veb Mirror reflex camera with internal photoelectric light meter
JPS4982355A (en) * 1972-12-11 1974-08-08

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3464337A (en) * 1966-04-15 1969-09-02 Pentacon Dresden Veb Mirror reflex camera with internal photoelectric light meter
JPS4982355A (en) * 1972-12-11 1974-08-08

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108710205A (en) * 2018-05-16 2018-10-26 电子科技大学 A kind of optical scanner holography self-focusing method based on edge gray difference function
CN108710205B (en) * 2018-05-16 2019-06-21 电子科技大学 A kind of optical scanner holography self-focusing method based on edge gray difference function

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