JPS55143511A - Binoculars that can be automatically focused and their focusing method - Google Patents
Binoculars that can be automatically focused and their focusing methodInfo
- Publication number
- JPS55143511A JPS55143511A JP5135779A JP5135779A JPS55143511A JP S55143511 A JPS55143511 A JP S55143511A JP 5135779 A JP5135779 A JP 5135779A JP 5135779 A JP5135779 A JP 5135779A JP S55143511 A JPS55143511 A JP S55143511A
- Authority
- JP
- Japan
- Prior art keywords
- retina
- image
- binoculars
- pinhole
- 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
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Telescopes (AREA)
Abstract
PURPOSE: To let the binoculars automatically focus only on the object within their visual field that the user is going to see by detecting the position of the retina viewing the object of the actual visual field by using infrared light.
CONSTITUTION: When a scanning lens 8 is scanned by completely covering from the near-sight limit to far-sight limit by a scanning lens driving device 17, the infrared ray image 16 of a pinhole 9 images on the retina 7 on the way of the scanning. At this time, the optical system is common with the forward and backward rays and therefore the image 16' by the reflected and scattered light of the image 16 on the retina also images on the pinhole 9' and the quantity of light entering an infrared ray detector 13 becomes maximum. In this way, the position of the retina viewing the subject is detected by the detector 13 and this detected value and the retina position signal of the preset standard state are applied to a comparator 19, by which comparative operations are done. The results thereof are amplified 20 and operate an eyepiece lens driving device 18, by which the focusing is accomplished automatically.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5135779A JPS55143511A (en) | 1979-04-27 | 1979-04-27 | Binoculars that can be automatically focused and their focusing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5135779A JPS55143511A (en) | 1979-04-27 | 1979-04-27 | Binoculars that can be automatically focused and their focusing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55143511A true JPS55143511A (en) | 1980-11-08 |
Family
ID=12884677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5135779A Pending JPS55143511A (en) | 1979-04-27 | 1979-04-27 | Binoculars that can be automatically focused and their focusing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55143511A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH025A (en) * | 1987-06-11 | 1990-01-05 | Asahi Optical Co Ltd | Device for detecting eye direction of camera |
US5572361A (en) * | 1991-10-17 | 1996-11-05 | Minolta Camera Kabushiki Kaisha | Binocular system with automatic diopter power adjustment |
FR2796729A1 (en) * | 1999-07-23 | 2001-01-26 | Thomson Csf | Automatic viewing system for devices having an eyepiece such as binoculars, cameras, telescopes, microscopes, etc |
WO2002054132A2 (en) * | 2000-12-29 | 2002-07-11 | Koninklijke Philips Electronics N.V. | System for automatically adjusting a lens power through gaze tracking |
-
1979
- 1979-04-27 JP JP5135779A patent/JPS55143511A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH025A (en) * | 1987-06-11 | 1990-01-05 | Asahi Optical Co Ltd | Device for detecting eye direction of camera |
US5572361A (en) * | 1991-10-17 | 1996-11-05 | Minolta Camera Kabushiki Kaisha | Binocular system with automatic diopter power adjustment |
FR2796729A1 (en) * | 1999-07-23 | 2001-01-26 | Thomson Csf | Automatic viewing system for devices having an eyepiece such as binoculars, cameras, telescopes, microscopes, etc |
WO2001007966A1 (en) * | 1999-07-23 | 2001-02-01 | Thales | Viewing system with automatic setting |
WO2002054132A2 (en) * | 2000-12-29 | 2002-07-11 | Koninklijke Philips Electronics N.V. | System for automatically adjusting a lens power through gaze tracking |
WO2002054132A3 (en) * | 2000-12-29 | 2004-01-08 | Koninkl Philips Electronics Nv | System for automatically adjusting a lens power through gaze tracking |
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