| 摘要 |
PURPOSE:To prevent the stray light made incident on photodetectors from an area on the outside of a distance measuring luminous flux by providing a light shielding member, which prevents the stray light from being made incident on a photodetector array, between image reforming lenses and photodetectors. CONSTITUTION:A transversely long and rectangular aperture part E0 is provided in the center of a visual field mask FM arranged near a predeterminate image surface FP facing a photographic lens TL of an optical device, and longitudinally long and rectangular aperture parts E01 and E02 are arranged on both sides, and images of luminous fluxes which pass aperture parts E0, E01, and E02 are formed on CCD line sensors P0, P01, and P02 through condenser lenses L0, L01, and L02. Pairs of image reforming lenses L1-L6 in the transverse direction and the longitudinal direction are arranged on an image reforming lens plate L, and stop aperture parts A1-A6 are arranged in positions corresponding to lenses L1-L6. A light shielding plate NM is arranged between the lens plate L and sensors P0, P01, and P02 and is provided with aperture parts N0R, N0S, N01, and N02. The stray light from the area on the outside of distance measuring luminous fluxes is prevented from being made incident on sensors P0, P01, and P02. |
