JPS5553320A - Ttl finder - Google Patents

Ttl finder

Info

Publication number
JPS5553320A
JPS5553320A JP12770378A JP12770378A JPS5553320A JP S5553320 A JPS5553320 A JP S5553320A JP 12770378 A JP12770378 A JP 12770378A JP 12770378 A JP12770378 A JP 12770378A JP S5553320 A JPS5553320 A JP S5553320A
Authority
JP
Japan
Prior art keywords
prism
reflecting
split
focus
images
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
JP12770378A
Other languages
Japanese (ja)
Inventor
Kousuke Itou
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.)
Kowa Co Ltd
Original Assignee
Kowa Co Ltd
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 Kowa Co Ltd filed Critical Kowa Co Ltd
Priority to JP12770378A priority Critical patent/JPS5553320A/en
Publication of JPS5553320A publication Critical patent/JPS5553320A/en
Pending legal-status Critical Current

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  • Viewfinders (AREA)

Abstract

PURPOSE: To obtain the TTL finder which is high in focus accuracy and is difficult to produce clouding by so disposing a split image prism that the split lines appear parallel in the longitudinal direction of the reflecting surface on the imaging surface.
CONSTITUTION: Photographic light enters an objective lens 1, thence it passes through the portions other than the reflecting surface 4 of a prism 3 and is imaged in an image pickup plane 7 by way of a relay lens 6. On the other hand, observation light is reflected by the reflecting face 4 of a prism 4, is further reflected by a reflecting prism 9 and images on a focus glass 11 through a relay lens 10. A split image prism 12 is disposed on the focus glass 11 so that even if the eye 14 is slightly deviated from the optical axis 8 it is made difficult for part of the split image to be shaded. If the small reflecting surfaces 4 are arrayed like the A-A' section, the luminous fluxes between the reflecting surfaces arrive at the image pickup plane 7 and therefore the forcus accuracy is high and images of good quality may be obtain.
COPYRIGHT: (C)1980,JPO&Japio
JP12770378A 1978-10-17 1978-10-17 Ttl finder Pending JPS5553320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12770378A JPS5553320A (en) 1978-10-17 1978-10-17 Ttl finder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12770378A JPS5553320A (en) 1978-10-17 1978-10-17 Ttl finder

Publications (1)

Publication Number Publication Date
JPS5553320A true JPS5553320A (en) 1980-04-18

Family

ID=14966609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12770378A Pending JPS5553320A (en) 1978-10-17 1978-10-17 Ttl finder

Country Status (1)

Country Link
JP (1) JPS5553320A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130731A (en) * 1974-09-07 1976-03-16 Sankyo Kogaku Kogyo Kk 1 ganrefukameranofuaindaanaigoshosochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5130731A (en) * 1974-09-07 1976-03-16 Sankyo Kogaku Kogyo Kk 1 ganrefukameranofuaindaanaigoshosochi

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