Title:
SHAPE CHANGE-MEASURING DEVICE
Document Type and Number:
Japanese Patent JP3798188
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To accurately measure the shape change of a body to be measured with simple facilities.
SOLUTION: The shape change-measuring device is provided with laser light- emitting devices 31-33 for projecting laser beams L1-L3 to a body to be measured (headlight) HL where shape change is measured and a laser beam reception processing device 40 for receiving the receiving the laser beams L1-L3 being reflected at each portion of the headlight HL and detecting the change of the light axis position. The laser beam reception processing device 40 is provided with a photo detector 41 for receiving the reflection laser beams L1-L3, computer 44 that allows the photodetector 41 to follow the light axis position of the reflection laser beams L1-L3 for movement based on the light reception output of the reflection laser beams L1-L3 for detecting each light axis position, and stores the detected light axis position with time and displays the traveling trace, and the like. Based on the fluctuation of the light axis position of the detected reflection laser beams L1-L3, a shape change at the reflection part of the laser beams of the headlight HL is measured, and further the shape change in the entire headlight HL can be recognized.
Inventors:
Nobuno Koyanagi
Application Number:
JP18107899A
Publication Date:
July 19, 2006
Filing Date:
June 28, 1999
Export Citation:
Assignee:
Koito Manufacturing Co., Ltd.
International Classes:
G01B11/16; B60Q1/06; G01B11/26; (IPC1-7): G01B11/16; B60Q1/06; G01B11/26
Domestic Patent References:
| JP845922A | ||||
| JP62197047U |
Attorney, Agent or Firm:
Akio Suzuki