JPH02146309U

JPH02146309U -

Info

Publication number: JPH02146309U
Application number: JP5572989U
Authority: JP
Priority date: 1989-05-17
Filing date: 1989-05-17
Publication date: 1990-12-12
Anticipated expiration: 2004-03-09
Also published as: JPH069296Y2

Description

[Brief explanation of drawings]

第１図は本考案の１実施例の概略断面図、第２
図はその要部の斜視図、第３図はその受光素子の
概略平面図、第４図は第２図示の要部の変形例の
斜視図、第５図は本考案の他の実施例の要部の概
略断面図、第６図は従来例の概略断面図である。１……光源、３……気泡管、４……受光素子、
６……第１の光透過部材、７……第２の光透過部
材、８……気泡、９……透明液体、１１……突出
部、１２……ケース、１４……リング状の遮光板
、１５……変位検出回路、１６……乱反射面、１
７……遮光円筒。 Fig. 1 is a schematic sectional view of one embodiment of the present invention;
3 is a schematic plan view of the light-receiving element, FIG. 4 is a perspective view of a modification of the main portion shown in FIG. 2, and FIG. 5 is a perspective view of another embodiment of the present invention. FIG. 6 is a schematic sectional view of a conventional example. 1...Light source, 3...Bubble tube, 4...Light receiving element,
6...First light transmitting member, 7...Second light transmitting member, 8...Bubble, 9...Transparent liquid, 11...Protrusion, 12...Case, 14...Ring-shaped light shielding plate , 15... Displacement detection circuit, 16... Diffuse reflection surface, 1
7...Shading cylinder.

Claims

[Claims for Utility Model Registration] 1. A light source, a bubble tube having a light transmitting member facing the light source, and having air bubbles and liquid sealed therein, and irradiated light from the light source passing through the light transmitting member and the liquid. In an inclination angle detection device that detects the inclination angle of the object by electrically detecting the position of the bubble projected onto the light receiving element, the inclination angle detection device is arranged in a fixed positional relationship with a light receiving element that receives the 1. An inclination angle detection device characterized in that a means for preventing reflected light incident on a light receiving element is provided on the inner surface of a side wall of a tube, and a light blocking member is provided for restricting the spread of light emitted from a light source. 2. The inclination angle detection device according to claim 1, wherein the reflection light prevention means has a triangular waveform in cross section and a shape that reflects light from the light source toward the light source. 3. The inclination angle detection device according to claim 1, wherein the means for preventing reflected light is a diffused reflection surface formed by sandblasting or the like. 4. The tilt angle detection device according to claim 1, wherein the means for preventing reflected light is a matte surface.