JPS55130521A - Single-lens reflex camera provided with ttl type focus detector - Google Patents
Single-lens reflex camera provided with ttl type focus detectorInfo
- Publication number
- JPS55130521A JPS55130521A JP3868879A JP3868879A JPS55130521A JP S55130521 A JPS55130521 A JP S55130521A JP 3868879 A JP3868879 A JP 3868879A JP 3868879 A JP3868879 A JP 3868879A JP S55130521 A JPS55130521 A JP S55130521A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- lead
- splitting mirror
- mirror
- optical
- 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
Links
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To impart TTL type focus detection function readily by incorporating two lead-in optical systems to one photoelectric detecting part.
CONSTITUTION: A photo splitting mirror 8 as the 1st lead-in optical system is formed ed to the inside center of a condenser lens 7 between a finder screen 3a and pentagonal roof prism 5 and an optical block 9 as the 2nd lead-in optical system means is disposed to the reflected light path of the photo splitting mirror 8. Further, a pair of photoelectric transducers 13a, 13b are disposed to the subject side head face part of the pentagonal roof prism 5 by way of a lens 12. As a result of this, part of the subject light which enters through an interchangeable type photographing lens 1, reflects on the mirror 3 and images on the finder screen 3a enters the photoelectric transducers 13a, 13b through the photo splitting mirror 8, optical block 9, prism 10 with spherical face and lens 12. The focus detection is performed from the comparison of the quantity of the received light.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3868879A JPS55130521A (en) | 1979-03-31 | 1979-03-31 | Single-lens reflex camera provided with ttl type focus detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3868879A JPS55130521A (en) | 1979-03-31 | 1979-03-31 | Single-lens reflex camera provided with ttl type focus detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55130521A true JPS55130521A (en) | 1980-10-09 |
Family
ID=12532226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3868879A Pending JPS55130521A (en) | 1979-03-31 | 1979-03-31 | Single-lens reflex camera provided with ttl type focus detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55130521A (en) |
-
1979
- 1979-03-31 JP JP3868879A patent/JPS55130521A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5299820A (en) | Focusing glass | |
JPS55155331A (en) | Focus detector | |
JPS5732406A (en) | Focus detector | |
JPS5570829A (en) | Finder of single-lens reflex camera | |
JPS55130521A (en) | Single-lens reflex camera provided with ttl type focus detector | |
JPS55111928A (en) | Automatic focusing device | |
US4297020A (en) | View finder for single-lens reflex camera | |
JPS547323A (en) | Optical system for detecting point of focus | |
JPS5588041A (en) | Finder of single-lens reflex camera | |
JPS55130520A (en) | Single-lens reflex camera provided with ttl type focus detector | |
US4223989A (en) | Focusing optical system for single-lens reflex cameras | |
SU622034A1 (en) | Reflex camera | |
JPS55106438A (en) | Focal plate in reflex camera | |
JPS54107337A (en) | Focusing device of single-lens reflex camera | |
GB1194814A (en) | Improvements in or relating to Cameras | |
JPS60247631A (en) | Single lens reflex camera with focus detector | |
JPS56128923A (en) | Focus detector | |
JPS55106427A (en) | Single-lens reflex camera | |
JPS552232A (en) | Focusing optical device for camera | |
JPS55108629A (en) | Focus detector of camera | |
SU1195326A1 (en) | Phtographic camera | |
JPS55127527A (en) | Automatic focus detector | |
JPS55129319A (en) | Optical system for focus detection of single-lens reflex camera | |
JPS556350A (en) | Finder optical system of camera provided with automatic focus detector | |
JPS5548606A (en) | Distance measuring device |