JPS57153211A - Distance detecting device - Google Patents

Distance detecting device

Info

Publication number
JPS57153211A
JPS57153211A JP3891681A JP3891681A JPS57153211A JP S57153211 A JPS57153211 A JP S57153211A JP 3891681 A JP3891681 A JP 3891681A JP 3891681 A JP3891681 A JP 3891681A JP S57153211 A JPS57153211 A JP S57153211A
Authority
JP
Japan
Prior art keywords
change
changed
crystal
refractive index
distribution
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
JP3891681A
Other languages
Japanese (ja)
Inventor
Yasuhiro Nanba
Toru Matsui
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.)
Minolta Co Ltd
Original Assignee
Minolta Co Ltd
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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP3891681A priority Critical patent/JPS57153211A/en
Publication of JPS57153211A publication Critical patent/JPS57153211A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication
    • G01C3/08—Use of electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Optical Distance (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To obtain a device which has a simple constitution and a high durability and is adapted to making small-size, by arranging an electrooptic element, where the distribution of the refractive index in optical materials is changed by the change of an external electric field, in an optical path for scanning. CONSTITUTION:An electrooptic element where the distribution of the refractive index in optical materials is changed by the change of an external electic field is arranged in the optical path of the projection light for scanning of an object space, and the external electric field is changed to change continuously the direction of the projection light, and the object space is scanned. For example, an electrooptic element 6 consisting of LiNbO3 crystal 18 or the like is provided with interdigital electrodes 14 and 16 on two faces which face to each other with the optical axis of the crystal 18 interposed, and the external electric field of the crystal 18 is changed by changing driving frequencies of electrodes 14 and 16 to change the distribution of the refractive index in the crystal 18. The image point position of a light emitting element 2 on a face 6b of the exit of the light, which is a taper face, is changed by this change to change an optical axis O of projection as whown by the dotted ine, and thus, the projection light scans the object space.
JP3891681A 1981-03-17 1981-03-17 Distance detecting device Pending JPS57153211A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3891681A JPS57153211A (en) 1981-03-17 1981-03-17 Distance detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3891681A JPS57153211A (en) 1981-03-17 1981-03-17 Distance detecting device

Publications (1)

Publication Number Publication Date
JPS57153211A true JPS57153211A (en) 1982-09-21

Family

ID=12538527

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3891681A Pending JPS57153211A (en) 1981-03-17 1981-03-17 Distance detecting device

Country Status (1)

Country Link
JP (1) JPS57153211A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311313A (en) * 1989-06-08 1991-01-18 Olympus Optical Co Ltd Focus detector
US5159351A (en) * 1988-05-20 1992-10-27 Minolta Camera Co., Ltd. Light deflecting device
JP2005251795A (en) * 2004-03-01 2005-09-15 Casio Comput Co Ltd Light source provided with light emitting diode and distance measuring device using the same
JP2019124831A (en) * 2018-01-17 2019-07-25 パイオニア株式会社 Irradiation device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159351A (en) * 1988-05-20 1992-10-27 Minolta Camera Co., Ltd. Light deflecting device
JPH0311313A (en) * 1989-06-08 1991-01-18 Olympus Optical Co Ltd Focus detector
JP2005251795A (en) * 2004-03-01 2005-09-15 Casio Comput Co Ltd Light source provided with light emitting diode and distance measuring device using the same
JP2019124831A (en) * 2018-01-17 2019-07-25 パイオニア株式会社 Irradiation device

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