JPS55143511A - Binoculars that can be automatically focused and their focusing method - Google Patents

Binoculars that can be automatically focused and their focusing method

Info

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
Application number
JP5135779A
Other languages
Japanese (ja)
Inventor
Kunimitsu Kobayashi
Isao Ishibai
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.)
Hoya Corp
Original Assignee
Hoya Corp
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 Hoya Corp filed Critical Hoya Corp
Priority to JP5135779A priority Critical patent/JPS55143511A/en
Publication of JPS55143511A publication Critical patent/JPS55143511A/en
Pending legal-status Critical Current

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
JP5135779A 1979-04-27 1979-04-27 Binoculars that can be automatically focused and their focusing method Pending JPS55143511A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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