Title:
RANGE-FINDING DEVICE
Document Type and Number:
Japanese Patent JPH0534578
Kind Code:
A
Abstract:
PURPOSE:To execute the range-finding of an object which is positioned at a super close distance except the normal distance by utilizing constitution for executing the range-finding of plural visual fields in a device which executes the range-finding of the plural visual fields by the combination of plural pairs obtained by making a light projecting element and a light receiving element combined each other. CONSTITUTION:In the range-finding device of the plural visual fields where the light projecting elements 1, 2 and 3 and the light receiving elements 9, 10 and 11 are optically provided corresponding to the positional relation of 1:1 (1 and 9, 2 and 10, and 3 and 11), it is not a normal state at a super close time but it is detected that a super close state is attained by selecting the light projecting element 2 and the light receiving element 11 and realizing image forming by such relation. The super close range-finding can be executed by utilizing an optical system for the plural visual fields.
Inventors:
KO HIDEO
MAEDA KAZUYUKI
MAEDA KAZUYUKI
Application Number:
JP18764391A
Publication Date:
February 12, 1993
Filing Date:
July 26, 1991
Export Citation:
Assignee:
CANON KK
International Classes:
G02B7/32; (IPC1-7): G02B7/32
Attorney, Agent or Firm:
Honda Kodaira (4 people outside)