JPH0317583U

JPH0317583U -

Info

Publication number: JPH0317583U
Application number: JP7862289U
Authority: JP
Priority date: 1989-07-03
Filing date: 1989-07-03
Publication date: 1991-02-21

Description

[Brief explanation of the drawing]

第１図および第２図は何れも本考案の一実施例
の光学図、第３図は本考案の他の実施例の光学図
、第４図は本考案の更に他の実施例の光学図、第
５図は従来センサの光学図、第６図は従来の他の
センサの光学図である。１……センサ本体、Ａ１〜Ａ５……光ビーム変
更用アタツチメント、２……投光器（投光部放電
灯）、３……受光器（受光部）。 1 and 2 are optical diagrams of one embodiment of the invention, FIG. 3 is an optical diagram of another embodiment of the invention, and FIG. 4 is an optical diagram of still another embodiment of the invention. , FIG. 5 is an optical diagram of a conventional sensor, and FIG. 6 is an optical diagram of another conventional sensor. DESCRIPTION OF SYMBOLS 1...Sensor body, A1-A5...Attachment for changing light beam, 2...Light emitter (light emitter discharge lamp), 3... Light receiver (light receiver).

Claims

[Scope of utility model registration request]

A light projecting section projects a light beam onto a predetermined area, and a light receiving section receives reflected light or transmitted light of the projecting beam, so that the projection range of the light projecting beam and the light receiving field of the light receiving section overlap. When a detected object exists in the detection area, the projected beam is reflected or blocked by the detected object, and the amount of light received by the light receiving section increases or decreases, so that the detected object is optically detected. In an older photoelectric sensor, the sensing area can be set by selectively attaching to the light emitting surface of the light emitting part or the light receiving surface of the light receiving part in the sensor body to change the light emitting beam or the light receiving field of view. A photoelectric sensor comprising a light beam changing attachment consisting of an optical system such as a changing prism or lens.