Title:
HEADLIGHT TESTER
Document Type and Number:
Japanese Patent JP2005300476
Kind Code:
A
Abstract:
To provide a headlight testing apparatus that can photograph an image projected to a screen through a condenser lens, by a camera such as CCD camera, and accurately measure without correction by image processing.
The headlight testing apparatus comprises a condenser lens 3 for converging headlight beams in the front face of a case 1 movable in four directions, a screen 4 to which converged beams from the condenser lens 3 are projected in the case, and the camera such as the CCD camera 5 for detecting the image on the screen therein; wherein the camera such as the CCD camera 5 is arranged out of the range of the converged beams with an optical center axis thereof L2 in parallel with the optical center axis L1 of the condenser lens.
Inventors:
MASUKO JINICHI
OKADA TAKEO
MORITA KAZUMOTO
OKADA TAKEO
MORITA KAZUMOTO
Application Number:
JP2004120741A
Publication Date:
October 27, 2005
Filing Date:
April 15, 2004
Export Citation:
Assignee:
NATIONAL TRAFFIC SAFETY & ENVIRONMENT LABORATORY
International Classes:
G01M11/06; (IPC1-7): G01M11/06
Domestic Patent References:
| JP2002372479A | 2002-12-26 | |||
| JPH08338788A | 1996-12-24 | |||
| JPH10239025A | 1998-09-11 |
Attorney, Agent or Firm:
Kenji Nakazawa