JPS51144648A - Photo-divider - Google Patents

Photo-divider

Info

Publication number
JPS51144648A
JPS51144648A JP50068779A JP6877975A JPS51144648A JP S51144648 A JPS51144648 A JP S51144648A JP 50068779 A JP50068779 A JP 50068779A JP 6877975 A JP6877975 A JP 6877975A JP S51144648 A JPS51144648 A JP S51144648A
Authority
JP
Japan
Prior art keywords
photo
divider
detector
luminous flux
emitting end
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
JP50068779A
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 JP50068779A priority Critical patent/JPS51144648A/en
Priority to US05/691,628 priority patent/US4103153A/en
Publication of JPS51144648A publication Critical patent/JPS51144648A/en
Priority to US05/869,447 priority patent/US4178084A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: A photo-detector is set near the emitting end of a photo-divider that uses holographic diffraction body with large luminous flux emission angles, ensuring good photometry.
COPYRIGHT: (C)1976,JPO&Japio
JP50068779A 1975-06-06 1975-06-06 Photo-divider Pending JPS51144648A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50068779A JPS51144648A (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
JP50068779A JPS51144648A (en) 1975-06-06 1975-06-06 Photo-divider

Publications (1)

Publication Number Publication Date
JPS51144648A true JPS51144648A (en) 1976-12-11

Family

ID=13383550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50068779A Pending JPS51144648A (en) 1975-06-06 1975-06-06 Photo-divider

Country Status (1)

Country Link
JP (1) JPS51144648A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982355A (en) * 1972-12-11 1974-08-08

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4982355A (en) * 1972-12-11 1974-08-08

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