JPS6418010A - Distance detector - Google Patents

Distance detector

Info

Publication number
JPS6418010A
JPS6418010A JP21751987A JP21751987A JPS6418010A JP S6418010 A JPS6418010 A JP S6418010A JP 21751987 A JP21751987 A JP 21751987A JP 21751987 A JP21751987 A JP 21751987A JP S6418010 A JPS6418010 A JP S6418010A
Authority
JP
Japan
Prior art keywords
light receiving
light
photoelectric current
measured
current output
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
Application number
JP21751987A
Other languages
Japanese (ja)
Other versions
JPH0621789B2 (en
Inventor
Chiyoharu Horiguchi
Hiroyuki Matsushita
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.)
Hamamatsu Photonics KK
Original Assignee
Hamamatsu Photonics KK
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 Hamamatsu Photonics KK filed Critical Hamamatsu Photonics KK
Priority to JP21751987A priority Critical patent/JPH0621789B2/en
Publication of JPS6418010A publication Critical patent/JPS6418010A/en
Publication of JPH0621789B2 publication Critical patent/JPH0621789B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Measurement Of Optical Distance (AREA)
  • Automatic Focus Adjustment (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To enable the obtaining of higher resolutions on the long range side regardless of a larger ratio of long and short ranges, by selecting a photoelectric current output from a light receiving area exposed to light most intensely to perform an analog computation. CONSTITUTION:A light receiving section [comprising (n) light receiving areas 521-52n) is formed by evenly diffusing P-type impurities on the surface side of a high resistance silicon substrate 51 while an n<+> type conductive layer 53 with n-type impurities diffused at a high density is formed on the back thereof 51. When light from an object to be measured is incident on the light receiving section as light spot, a distance to the object being measured is detected from a photoelectric current output drawn at both ends thereof. The areas 521-52n are provided with pairs of signal fetching electrodes 55a1-55a1 and 55b1-55bn and intervals of the respective pairs of signal leading-out electrodes are multiplied equally. The light receiving area exposed light most intensely is discriminated from photoelectric current outputted from the signal leading-out electrodes and the position of the light spot at the light receiving section is determined from the photoelectric current output selected based on the results of the discrimination to compute a distance to the object being measured.
JP21751987A 1987-08-31 1987-08-31 Distance detector Expired - Fee Related JPH0621789B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21751987A JPH0621789B2 (en) 1987-08-31 1987-08-31 Distance detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21751987A JPH0621789B2 (en) 1987-08-31 1987-08-31 Distance detector

Publications (2)

Publication Number Publication Date
JPS6418010A true JPS6418010A (en) 1989-01-20
JPH0621789B2 JPH0621789B2 (en) 1994-03-23

Family

ID=16705511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21751987A Expired - Fee Related JPH0621789B2 (en) 1987-08-31 1987-08-31 Distance detector

Country Status (1)

Country Link
JP (1) JPH0621789B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06213176A (en) * 1992-12-07 1994-08-02 Carrier Corp Minimum-diametral scroll compressor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06213176A (en) * 1992-12-07 1994-08-02 Carrier Corp Minimum-diametral scroll compressor

Also Published As

Publication number Publication date
JPH0621789B2 (en) 1994-03-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees