Patent ID: 6466746
Filing Date: 2002-10-15
Classification: G03B

Abstract:
A stereo camera provided with a mechanism for adjusting a distance between optical axes, in which two photographing lenses are mounted on independent right and left lens boards, a distance between the right and left lens boards is changed being interlocked to back-and-forth motion of the right and left lens boards accompanying an operation for adjusting a focal point, and a distance between the optical axes of the two photographing lenses is corrected depending upon a focal distance, wherein arcuate loci of motion of the two photographing lenses are right-and-left symmetrical arcs passing through positions at where a distance between the optical axes of the two photographing lenses at a position for adjusting a focal point to infinity is narrower than a pitch between the right and left exposed pictures or, preferably, through positions within a range of distances between the optical axes in which visual fields of the two photographing lenses are brought into agreement at a distance of 2 to 3 meters in front of main points of the photographing lenses along the optical axes, and through positions of the distance between the optical axes at where the visual fields of the two photographing lenses at a position for adjusting the shortest focal point are brought into agreement at a focal distance or through the positions at where a distance between the optical axes is slightly narrower than a distance between the optical axes with which the visual fields are brought into agreement at the focal distance.