JPS61112916A - Distance measuring apparatus - Google Patents

Distance measuring apparatus

Info

Publication number
JPS61112916A
JPS61112916A JP23409784A JP23409784A JPS61112916A JP S61112916 A JPS61112916 A JP S61112916A JP 23409784 A JP23409784 A JP 23409784A JP 23409784 A JP23409784 A JP 23409784A JP S61112916 A JPS61112916 A JP S61112916A
Authority
JP
Japan
Prior art keywords
distance
lens
image
optical axis
amount
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
JP23409784A
Other languages
Japanese (ja)
Inventor
Masahiro Tanmachi
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP23409784A priority Critical patent/JPS61112916A/en
Publication of JPS61112916A publication Critical patent/JPS61112916A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To calculate a distance up to a body from position deviation amount and displacement amount of a lens, by allowing one of the lenses to be displaced in the vertical direction perpendicular to the optical axis with the optical axis of these two lens held parallel one to the other for realizing correlation of the distribution of illuminating intensities corresponding to the distance range for measurement and obtaining a position deviation amount of these two images.
CONSTITUTION: In case of the longest distance measurement of a distance range P1 including the infinity, an image on a CCD array 4 by an infinitely distant specimen lens 2 is shifted from the LH side to the No. 1/2 light receiving element. Namely, this corresponds to an arrangement 'a' representing a displacement distance of zero. For distance measurement within a P2 range, an image on the CCD array 4 by a body in a point Q, by a lens 2 is arranged from the LH side to No. N/2 light-receiving element. Namely, this corresponds to the arrangement of 'b', and when compare with a case of 'a', position of the lens 2 is displaced to the left hand side along the basic axis by a distance d. Here, by correlation of distribution of illumination intensities on the CCD arrays 3, 4, a distance δ at 'b' is obtained, and addition of δand d enables calculation of a distance X from the amount D of deviation of the image 7 from the optical axis 2B.
COPYRIGHT: (C)1986,JPO&Japio
JP23409784A 1984-11-08 1984-11-08 Distance measuring apparatus Pending JPS61112916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23409784A JPS61112916A (en) 1984-11-08 1984-11-08 Distance measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23409784A JPS61112916A (en) 1984-11-08 1984-11-08 Distance measuring apparatus

Publications (1)

Publication Number Publication Date
JPS61112916A true JPS61112916A (en) 1986-05-30

Family

ID=16965571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23409784A Pending JPS61112916A (en) 1984-11-08 1984-11-08 Distance measuring apparatus

Country Status (1)

Country Link
JP (1) JPS61112916A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491361A (en) * 1977-12-28 1979-07-19 Minolta Camera Co Ltd Finding range interchanger
JPS5793208A (en) * 1980-12-01 1982-06-10 Nippon Kogaku Kk <Nikon> Optical system of distance measuring apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491361A (en) * 1977-12-28 1979-07-19 Minolta Camera Co Ltd Finding range interchanger
JPS5793208A (en) * 1980-12-01 1982-06-10 Nippon Kogaku Kk <Nikon> Optical system of distance measuring apparatus

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