| 摘要 |
An inclination angle detector, comprising: a bubble tube, a light emitting unit, a light receiving element, and an operating unit for calculating an angle of inclination. The bubble tube has a transparent container formed such that an inner surface of an upper part thereof has a spherical concave surface. A gas and a transparent liquid are sealed in the transparent container. The light emitting unit emits light towards the bubble tube from an upper and lower side thereof. The light receiving element converts light recPived from the bubble tube into an electrical signal, and the operating unit calculates the angle based on the electrical signal. The light-receiving element comprises a first light-receiving unit for position detection within a movable range of a bubble shadow and a second light-receiving unit for reference outside the movable range. |
