JPS6436943U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図乃至第３図は本考案の第１実施例を示し
たもので、第１図は要部の縦断側面図、第２図は
光学系の斜視図、第３図は光学系の部分拡大縦断
側面図、第４図は本考案の第２実施例を示す光学
系の縦断側面図、第５図は本考案の第３実施例を
示す第４図相当図、第６図は本考案の第４実施例
を示す第４図相当図、第７図は本考案の第５実施
例を示す第１図相当図であり、そして第８図は従
来例を示す第４図相当図である。 図面中、１２は投光素子、１３は受光素子、１
７は投光用レンズ部、１８は受光用レンズ部、２
０は平板部、２１は対向面部、２２は空間部、２
３及び２４は境界面、２５は投光用レンズ部、２
６は受光用レンズ部、３２ａは投光用レンズ部、
３３ａは受光用レンズ部、３６及び３７は平板部
、３８及び３９は対向面部、４０及び４１は空間
部、４２乃至４５は境界面である。 Figures 1 to 3 show the first embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional side view of the main parts, Figure 2 is a perspective view of the optical system, and Figure 3 is a portion of the optical system. 4 is a longitudinal side view of an optical system showing a second embodiment of the present invention; FIG. 5 is a view corresponding to FIG. 4 showing a third embodiment of the present invention; FIG. 6 is a view of the optical system of the present invention. FIG. 7 is a diagram equivalent to FIG. 4 showing the fourth embodiment of the present invention, FIG. 7 is a diagram equivalent to FIG. 1 showing the fifth embodiment of the present invention, and FIG. 8 is a diagram equivalent to FIG. 4 showing a conventional example. . In the drawing, 12 is a light emitting element, 13 is a light receiving element, 1
7 is a light emitting lens part, 18 is a light receiving lens part, 2
0 is a flat plate part, 21 is an opposing surface part, 22 is a space part, 2
3 and 24 are boundary surfaces, 25 is a projection lens part, 2
6 is a light receiving lens part, 32a is a light projecting lens part,
33a is a light-receiving lens portion, 36 and 37 are flat plate portions, 38 and 39 are opposing surface portions, 40 and 41 are space portions, and 42 to 45 are boundary surfaces.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 投光素子の光を検出対象部に投光するための投
光用レンズ部と、前記検出対象部からの反射光を
受光素子に集束させるための受光用レンズ部とを
、各々の光軸が交差するように併設して成るもの
において、前記投光用及び受光用の各レンズ部に
前記検出対象物と対向するように一体に形成され
た平面状の対向面部と、この対向面部と前記各レ
ンズ部との間に介在され各レンズ部側の境界面の
中心の法線が前記光軸と一致し且つ前記対向面部
側の境界面が該対向面部に平行な平面となる空間
部とを具備して成る限定反射形光電スイツチ。 A light projecting lens section for projecting light from the light projecting element onto a detection target section, and a light receiving lens section for converging reflected light from the detection target section onto a light receiving element, each having an optical axis. A planar opposing surface portion integrally formed in each of the light emitting and light receiving lens portions to face the detection target, and this opposing surface portion and each of the above lens portions are arranged so as to intersect with each other. a space portion interposed between the space portion and the lens portion, the normal line of the center of the boundary surface on each lens portion side coinciding with the optical axis, and the boundary surface on the opposing surface portion side being a plane parallel to the opposing surface portion. A limited reflection type photoelectric switch.