| 摘要 |
PURPOSE:To reduce the size and cost of line sensors by providing a means of splitting the image formed by a photographic lens two parts in front of an itended image plane, and deviating the split luminous fluxes from each other in the direction where the line sensors are arranged. CONSTITUTION:The imaging luminous flux l from a photographing lens 1 enters the incident face 20 of an optical splitter 22, and is split two two luminous fluxes la, lb by a one-dimentional microprism. These luminous fluxes emit from the two sloped faces of an exit face 21, pass through the slits 23a, 23b of a field mask 24 for distance measurement and are deviated from each other in the direction orthogonal with the split direction by means of prisms 25a, 25b having the sloped faces opposite from each other. The prisms 25a, 25b are made into one body with a field lens 26 and the pupil image of the lens 1 is passed through a stop 27 provided near a secondary imaging lens 28 by the lens 26 with the 1st triangular prism mirror 6. Said image is formed on two rows of line sensors 29a, 29b respectively with the 2nd triangular prism 9. |
