JPS55106438A - Focal plate in reflex camera - Google Patents

Focal plate in reflex camera

Info

Publication number
JPS55106438A
JPS55106438A JP1408679A JP1408679A JPS55106438A JP S55106438 A JPS55106438 A JP S55106438A JP 1408679 A JP1408679 A JP 1408679A JP 1408679 A JP1408679 A JP 1408679A JP S55106438 A JPS55106438 A JP S55106438A
Authority
JP
Japan
Prior art keywords
image
focal plate
visible
matt
transmission surfaces
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
JP1408679A
Other languages
Japanese (ja)
Other versions
JPS6220535B2 (en
Inventor
Hirobumi Horigome
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP1408679A priority Critical patent/JPS55106438A/en
Publication of JPS55106438A publication Critical patent/JPS55106438A/en
Publication of JPS6220535B2 publication Critical patent/JPS6220535B2/ja
Granted legal-status Critical Current

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  • Viewfinders (AREA)

Abstract

PURPOSE: To make focusing faster and easier by aggregating and forming matt surfaces and transmission surfaces in forming the focal plate.
CONSTITUTION: Ring-form matt surfaces 3 and transmission surfaces 4 centering at an optical axis 2 are alternately and concentrically disposed to form a focal plate 1. Then, when the light entering from a photographing lens 6 is reflected by a reflection mirror 7 and reaches the focal plate 1, the subject image is formed on the matt surfaces 3 where said image is visible. In the portions of the transmission surfaces 4, the image is visible as an aerial image. Hence, the subject image in the matt surfaces 3 and the aerial real image in the transmission surfaces 4 are visible simultaneously adjacently and from the partial deviations of the subject image in the finder, even an unskilled person can readily know the out-of-focus state and is able to match focus rapidly.
COPYRIGHT: (C)1980,JPO&Japio
JP1408679A 1979-02-09 1979-02-09 Focal plate in reflex camera Granted JPS55106438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1408679A JPS55106438A (en) 1979-02-09 1979-02-09 Focal plate in reflex camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1408679A JPS55106438A (en) 1979-02-09 1979-02-09 Focal plate in reflex camera

Publications (2)

Publication Number Publication Date
JPS55106438A true JPS55106438A (en) 1980-08-15
JPS6220535B2 JPS6220535B2 (en) 1987-05-07

Family

ID=11851286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1408679A Granted JPS55106438A (en) 1979-02-09 1979-02-09 Focal plate in reflex camera

Country Status (1)

Country Link
JP (1) JPS55106438A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159624A (en) * 1980-05-13 1981-12-09 Minolta Camera Co Ltd Display device for measurement region of autofocus detector of single-lens reflex camera
JPS57112329U (en) * 1980-12-29 1982-07-12
JPS5823319U (en) * 1981-08-08 1983-02-14 ミノルタ株式会社 Single-lens reflex camera with automatic focus adjustment device
JP2010039320A (en) * 2008-08-07 2010-02-18 Hoya Corp Focusing plate for single-lens reflex camera

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56159624A (en) * 1980-05-13 1981-12-09 Minolta Camera Co Ltd Display device for measurement region of autofocus detector of single-lens reflex camera
JPS57112329U (en) * 1980-12-29 1982-07-12
JPS5823319U (en) * 1981-08-08 1983-02-14 ミノルタ株式会社 Single-lens reflex camera with automatic focus adjustment device
JP2010039320A (en) * 2008-08-07 2010-02-18 Hoya Corp Focusing plate for single-lens reflex camera

Also Published As

Publication number Publication date
JPS6220535B2 (en) 1987-05-07

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