Title:
【発明の名称】色分解光学系
Document Type and Number:
Japanese Patent JP2870234
Kind Code:
B2
Abstract:
PURPOSE:To provide photo-decomposition optical system capable of decomposing the incident light flux into three colors with good spectral characteristics by properly constituting multiple prisms and dichroic films. CONSTITUTION:In a photo-decomposition optical system having at least three prisms of the first prism 1 with the first dichroic film 4, the second prism 2 with the second dichroic film 5, and the third prism 3; the red light in the incident light flux is reflected by the first dichroic film 4 with the first prism 1 then sent out via an absorption filter 6 cutting the light with the wavelength shorter than that of the red light, the green light in the light flux passing through the first dichroic film 4 is reflected by the second dichroic film 5 provided on the second prism 2 then sent out via an absorption filter 7 cutting the light with the wavelength shorter than that of the green light, and the blue light passing through the second dichroic film 5 is sent out via the third prism 3.
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Inventors:
TOMITA YASUYUKI
Application Number:
JP17719391A
Publication Date:
March 17, 1999
Filing Date:
June 21, 1991
Export Citation:
Assignee:
KYANON KK
International Classes:
G02B5/04; G02B5/28; G02B27/00; G02B27/10; G03B33/12; H04N9/097; (IPC1-7): G02B27/10; G02B5/04; G02B5/28; G03B33/12; H04N9/097
Domestic Patent References:
| JP2135301A | ||||
| JP63115103A | ||||
| JP5192122A |
Attorney, Agent or Firm:
Takanashi Yukio