Color television camera incorporating a color resolving prism system

摘要

In a television camera having a color resolving prism system for forming monochromatic images on the image pickup surfaces of a plurality of image pickup devices by an objective lens the color resolving prism system has first, second, third and fourth prisms as is named in the order from a side of the objective lens along the optic axis of the objective lens, the first and second prisms, with their refracting angles opening in opposite directions, are edisposed with an air layer interposed therebetween or are joined together with a dichroic layer interposed therebetween, the second and third prisms are disposed with an air layer interposed therebetween, the third and fourth prisms are joined together with a second dichroic layer interposed therebetween, and the values of the refracting angles of the first theta 10 or theta 21), second theta 10+ theta 11 or theta 22, third theta 23 and fourth theta 24 prisms satisfy the following conditions: (1) in the case where the first and second prisms are disposed with the air layer interposed therebetween, 5.2 DEG < theta 10<12 DEG 26.7 DEG < theta 10+ theta 11<30 DEG , and (2) in the case where the first and second prisms are joined together with the dichroic layer interposed therebetween, 25.8 DEG