Color separation optical system

Claim 2

A color separation optical system as claimed in claim 1, wherein said transparent base body is provided on its planar exit surface with said striped pattern shapeD dichroic filter, and the planar incident surface thereof is oblique to said exit surface to form a prism therewith.

Claim 3

A color separation optical system as claimed in claim 3, including a prism which is of the same shape as said transparent base body and oppositely oriented relative to the optical axis, and said prism cancels the prism action to the incident light ray into the prism shaped transparent base body.

Claim 4

A color separation optical system as claimed in claim 13, wherein said mosaic shaped color filter is provided proximate its optical axis with a positive plano-convex lens, and said plano-convex lens has a power opposite and nearly equal in strength to that of said negative plano-concave lens shaped transparent base body.

Claim 5

A color separation optical system as claimed in claim 1, wherein said transparent base body comprises a plano-convex lens and is provided on its exit surface with said dichroic filter piece.

Claim 6

A color separation optical system as claimed in claim 6, wherein said mosaic shaped color filter is provided proximate its optical axis with a negative plano-concave lens, and said plano-concave lens has a power opposite and nearly equal in strength to that of said positive plano-convex lens shaped transparent base body.

Claim 7

A color separation optical system having an objective lens component, a mosaic shaped color filter, and a relay lens component, which is so constructed that said mosaic shaped color filter is provided with two transparent base bodies, and said transparent base bodies have respectively confronting convex and concave curved surfaces, and the back sides thereof are respectively formed into a lens shape of a curvature different from said surfaces respectively, and disposed on one curved surface in a striped pattern is a dichroic filter piece having a spectral permeable characteristic identical with each other, and disposed on the other curved surface in a striped pattern is a dichroic filter piece having a spectral permeable characteristic identical with each other in another spectral permeable characteristic different from said dichroic filter piece in the spectral permeable characteristic.

Claim 8

A color separation optical system as claimed in claim 8, wherein the transparent base body on the incident side on the objective lens component side is a negative power plano-concave lens component having a concave exit surface on which is disposed in the striped pattern said dichroic filter piece having the spectral permeable characteristic identical with each other, and the other transparent base body on the exit side of said relay lens side is a positive power plano-convex lens component having a convex incident surface corresponding to said concave surface of the former transparent base body, and on said convex surface is disposed in striped pattern said dichroic filter piece having another spectral permeable characteristic and in said both transparent base bodies said negative power and said positive power are nearly the same.

Claim 9

A color separation optical system as claimed in claim 8, wherein the transparent base body on the incident side on the objective lens component side is a positive power plano-convex lens component having a convex exit surface on which said dichroic filter pieces having the spectral permeable characteristic identical with each other are disposed in the striped pattern, and the other transparent base body is a negative power plano-concave lens component having on the exit side on the relay lens side a concave incident surface corresponding to said convex surface, and on said concave surface said dichroic filter piece having another spectral permeable characteristic is disposed in the striped pattern shape, and in said transparent base body said positive power and said negative power are nearly the same.

Claim 10

A color separation optical system as claimed in claim 8, wherein the transparent base body on the incident side on the objective lens component side comprises a biconvex lens with an exit sUrface on which are disposed the dichroic filter pieces having the spectral permeable characteristic identical with each other, and the other transparent base body on the exit side comprises a concave-convex lens, the exit surface of which is a convex surface and on the concave incident surface corresponding to said exit surface a dichroic filter piece having another spectral permeable characteristic is disposed, the resultant power of said both transparent base bodies being positive and and said transparent base bodies refracting the image forming light ray coming from the objective lens component to direct it into the incident picture angle of the relay lens.

Claim 11

A color separation optical lens having an objective lens component, a mosaic shaped color filter, and a relay lens, component which is so constructed that said mosaic shaped color filter is provided with a convex incident surface facing said objective lens component and an exit surface and dichroic filter pieces, disposed on said exit surface and said incident surface refracts the image forming light ray coming from the objective lens component to direct it nearly in the same incident angle to said dichroic filter pieces, and a portion of said incident light ray passes through said dichroic filter pieces and at the same time the reflected light ray of the light rays reflected by said dichroic filter pieces, which is reflected again by said incident surface is directed at an incident angle different from said incident light ray onto said dichroic filter pieces.

Claim 12

A color separation optical system as claimed in claim 1 wherein said transparent base body comprises a plano-concave lens component and is provided on its exit surface with said dichroic filter piece.