The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1989
Filed:
May. 11, 1988
Yoshiharu Takahashi, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
According to the invention, a distance measurement apparatus for a camera is disclosed. In this apparatus, a plurality of light-emitting elements are arranged at different positions in a direction perpendicular to a base line and an optical axis of projected light. A driver causes the light-emitting elements to selectively emit near-distance measurement light and far-distance measurement light having a higher intensity than that of the near-distance measurement light. When an amount of light reflected by an object cannot reach a predetermined value necessary for distance measurement upon emission of a light-emitting element selected by the driver, a microcomputer controls an operation of the driver so as to cause another light-emitting element to emit light. The near- or far-distance measurement light reflected by the object is received so as to measure a distance to the object.