Distance measuring device

Abstract

Abstract PURPOSE:To eliminate restrictions in distance measurement by measuring objects by selecting one freely from the plural measuring objects which exist mutually spacially in the direction parallel with a reference line direction and measuring distances. CONSTITUTION:A light emitting element L releases light beams B1, B2, B3 in respective positions S1, S2, S3 where it can move. The respective beams B1, B2, B3 are reflected respectively by objects X1, X2, X3 on any of object distance zones a, b, c, d, for example, on the zone a. The reflected beams a1, a2, a3 are made incident onto the photodetectors alpha1, alpha2, alpha3 out of photodetector groups P1, P2, P3. Here, to which of the photodetectors alpha1-delta1 the reflected beams are made incident is detected, whereby in which of the zones a, b, c, d the measuring objects exist, that is, the distances up to the measuring objects are measured.

Inventors

• 👤 Kunihisa Hoshino
• 👤 星野　邦久

Bibliographic Details