JPS55106438A - Focal plate in reflex camera - Google Patents
Focal plate in reflex cameraInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-02-09 JP JP1408679A patent/JPS55106438A/en active Granted
Cited By (4)
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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