JPH0394112A - Testing method for distance measurement module - Google Patents

Testing method for distance measurement module

Info

Publication number
JPH0394112A
JPH0394112A JP6527390A JP6527390A JPH0394112A JP H0394112 A JPH0394112 A JP H0394112A JP 6527390 A JP6527390 A JP 6527390A JP 6527390 A JP6527390 A JP 6527390A JP H0394112 A JPH0394112 A JP H0394112A
Authority
JP
Japan
Prior art keywords
distance
convex lens
plate
angle
measured
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
JP6527390A
Other languages
Japanese (ja)
Other versions
JPH0769176B2 (en
Inventor
Hideaki Togawa
Nariyasu Sakai
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.)
Pentax Corp
Original Assignee
Asahi Optical Industries 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
Priority to JP14791489 priority Critical
Priority to JP1-147914 priority
Application filed by Asahi Optical Industries Co Ltd filed Critical Asahi Optical Industries Co Ltd
Publication of JPH0394112A publication Critical patent/JPH0394112A/en
Publication of JPH0769176B2 publication Critical patent/JPH0769176B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To miniaturize the device, and also, to execute the distance measurement test, while varying continuously a test distance by providing an optical member for curving a course of a beam so as to be movable in an optical path for connecting a light emitting part, a body whose distance is to be measured and a light receiving part.
CONSTITUTION: A distance plate 13 is provided in a desired distance in front of a distance measurement module 3, and a convex lens 15 is provided so as to be movable in the optical path direction in front of a light emitting part 5. Supposing that the distance plate 13 and the convex lens 15 do not exist, and a distance plate 17 exists in an actual distance whose distance is to be measured, a spot beam image by the distance plate 17 of a projected infrared beam is brought to image formation in the light receiving part 7. An angle made by the projecting direction A and the photodetecting direction B in this case is denoted as θ1. Subsequently, when an angle θ2 made by the projecting direction A and the photodetecting direction B' in the case the distance plate 13 and the convex lens 15 are provided is set to the same as the angle θ1, a distance measurement can be executed as a spot beam image from the distance plate 17 which as if it is in an actual distance by the light receiving part 7. Also, when the convex lens 15 is moved in the optical path direction, the angle θ2 is varied continuously, and the actual distance whose distance is to be measured is also varied continuously by following the movement of the convex lens 15.
COPYRIGHT: (C)1991,JPO&Japio
JP6527390A 1989-06-09 1990-03-15 Distance measuring method for distance measuring module Expired - Lifetime JPH0769176B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP14791489 1989-06-09
JP1-147914 1989-06-09

Publications (2)

Publication Number Publication Date
JPH0394112A true JPH0394112A (en) 1991-04-18
JPH0769176B2 JPH0769176B2 (en) 1995-07-26

Family

ID=15440956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6527390A Expired - Lifetime JPH0769176B2 (en) 1989-06-09 1990-03-15 Distance measuring method for distance measuring module

Country Status (1)

Country Link
JP (1) JPH0769176B2 (en)

Also Published As

Publication number Publication date
JPH0769176B2 (en) 1995-07-26

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