Title:
INCLINATION DETECTOR
Document Type and Number:
Japanese Patent JP3210450
Kind Code:
B2
Abstract:
PURPOSE: To allow detection of inclination only through a unilateral optical system by providing a light receiving unit for receiving reflection luminous flux transmitted through a cylindrical lens system and detecting the inclination amount at a position on the light receiving plane of the light receiving unit where the reflection luminous flux is received.
CONSTITUTION: A light receiving unit 10 is arranged to receive luminous flux transmitted through a cylindrical lens system 9. The light receiving unit 10 is split in checkered pattern into four sections, i.e., light receiving parts 10a, 10b having outputs connected with a differential amplifier 11 and light receiving parts 10b, 10d having outputs connected with a differential amplifier 12. The amplifier 12 outputs biaxial component of the displacement angle of reflection luminous flux whereas the amplifier 12 outputs x-direction component thereof. Outputs from the amplifiers 11, 12 are fed to an operating unit 13. The operating unit 13 operates the position of optical axis of reflection luminous flux at the light receiving unit 10 based on the outputs from the amplifiers 11, 12 thus measuring inclination angle and inclining direction of the free liquid plane 1.
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Inventors:
Fumio Otomo
Hiroo Sugai
Ikuo Ishinabe
Junichi Furuhira
Hiroo Sugai
Ikuo Ishinabe
Junichi Furuhira
Application Number:
JP32729092A
Publication Date:
September 17, 2001
Filing Date:
November 12, 1992
Export Citation:
Assignee:
Topcon Co., Ltd.
International Classes:
G01C9/06; G01C9/20; (IPC1-7): G01C9/06; G01C9/20
Domestic Patent References:
| JP49127657A | ||||
| JP60169706A | ||||
| JP60183511A | ||||
| JP60232502A | ||||
| JP61108908A | ||||
| JP61204515A | ||||
| JP62266447A | ||||
| JP62274211A | ||||
| JP6450908A | ||||
| JP1145642A | ||||
| JP5256647A | ||||
| JP5491860U | ||||
| JP34213U | ||||
| JP454208B1 |
Attorney, Agent or Firm:
Shoji Miyoshi