Method and apparatus for optical axis inspection of head lamp

Abstract

Abstract PURPOSE:To elevate adjusting accuracy by indicating the acceptance range in the optical axis inspection in image on a display unit according to the vehicle height together with symbols denoting a gravity center position and a sharp cut estimate line after quantitative determination of the gravity center position in the spot zone and the sharp cut estimate line. CONSTITUTION:After image information of TV cameras 31, 32a and 32b are taken from a frame memory 44, an arithmetic circuit 40 determines the height of an automobile to be inspected from the image information of the TV camera 31, on the gravity center position in the spot zone exceeding a fixed luminosity from image information on a graphic indicating an acceptance range with the display position corrected and image information of the TV cameras 32a and 32b based on the difference between the vehicle height and the reference vehicle height of the corresponding type read out from a memory 41 and a sharp cut estimate line at the fixed relative position from the gravity center position. It also outputs them to the frame memory 44 together with image information indicating symbols of the gravity center position and the sharp cut estimate line thus obtained. The image information stored in the frame memory 44 is outputted to a controller 47, converted to a video signal and displayed in image on a monitor TV 36.

Inventors

• 👤 Soichi Ishikawa
• 👤 石川　爽一
• 👤 Mamoru Yoshida
• 👤 吉田　衛
• 👤 Kunio Mitsuzawa
• 👤 光沢　邦男

Bibliographic Details