Tilt Detecting Device And Rotary Laser Apparatus

摘要

The invention provides a tilt detecting device, in which a fixed member and a tilting plate are relatively rotatably provided via a pivot member, either one of the fixed member or the tilting plate is integral with the pivot member, comprising a tilt detecting unit provided on either of the fixed member or the tilting plate which relatively rotates with respect to the pivot member, and an angle detection pattern formed on the pivot member, wherein the tilt detecting unit comprises a light source for projecting an illumination light to the pivot member, a photodetection element for receiving the illumination light reflected by the pivot member, an optical system for projecting a pattern image to the photodetection element and an arithmetic unit for detecting a rotation of the pivot member based on a projecting position of the pattern image projected onto the photodetection element when the pivot member rotates.

主权项

1. A tilt detecting device, in which a fixed member and a tilting plate are relatively rotatably provided via a pivot member, either one of said fixed member or said tilting plate is integral with said pivot member,
comprising a tilt detecting unit provided on either of said fixed, member or said tilting plate which relatively rotates with respect to said pivot member, and an angle detection pattern formed on said pivot member, wherein said tilt detecting unit comprises a light source for projecting an illumination light to said pivot member, a photodetection element for receiving the illumination light reflected by said pivot member, an optical system for projecting a pattern image to said photodetection element and an arithmetic unit for detecting a rotation of said pivot member based on a projecting position of said pattern image projected onto said photodetection element when said pivot member rotates.