JPS564130A - Focal plate - Google Patents
Focal plateInfo
- Publication number
- JPS564130A JPS564130A JP7894579A JP7894579A JPS564130A JP S564130 A JPS564130 A JP S564130A JP 7894579 A JP7894579 A JP 7894579A JP 7894579 A JP7894579 A JP 7894579A JP S564130 A JPS564130 A JP S564130A
- Authority
- JP
- Japan
- Prior art keywords
- directions
- extending
- split
- central part
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/18—Focusing aids
- G03B13/24—Focusing screens
- G03B13/28—Image-splitting devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Viewfinders (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894579A JPS564130A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
US06/161,433 US4330188A (en) | 1979-06-22 | 1980-06-20 | Focusing screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7894579A JPS564130A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS564130A true JPS564130A (en) | 1981-01-17 |
JPS6140091B2 JPS6140091B2 (ja) | 1986-09-08 |
Family
ID=13676018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7894579A Granted JPS564130A (en) | 1979-06-22 | 1979-06-22 | Focal plate |
Country Status (2)
Country | Link |
---|---|
US (1) | US4330188A (ja) |
JP (1) | JPS564130A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63229999A (ja) * | 1987-03-19 | 1988-09-26 | Matsushita Electric Ind Co Ltd | スピ−カシステム |
US6078441A (en) * | 1999-05-14 | 2000-06-20 | Lahood; Michael | Optical device for producing rotational displacement of an incident image |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3602085A (en) * | 1968-06-17 | 1971-08-31 | Pentacon Dresden Veb | Photographic image-focusing device |
JPS5148335A (en) * | 1974-10-23 | 1976-04-26 | Miranda Kamera Kk | Sotsukyobu osonaeta shotenban |
DE2821044A1 (de) * | 1978-05-13 | 1979-11-22 | Winfried Kaiser | Universal-koinzidenzschaerfeindikator |
-
1979
- 1979-06-22 JP JP7894579A patent/JPS564130A/ja active Granted
-
1980
- 1980-06-20 US US06/161,433 patent/US4330188A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS6140091B2 (ja) | 1986-09-08 |
US4330188A (en) | 1982-05-18 |
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