Title: Chromatic resolution optical system, image display optical system and projection image display device
Application Number: 02141576 Application Date: 2002.09.03
Publication Number: 1403848 Publication Date: 2003.03.19
Approval Pub. Date: 2006.04.05 Granted Pub. Date: 2006.04.05
International Classifi-cation: G02B27/28;G02B27/18;G03B21/14;H04N9/31
Applicant(s) Name: Canon K.K. Address:
Inventor(s) Name: Uaki Tatsuo;Okuyama Atsushi;Abe Masayuki
Attorney & Agent: wang yonggang
Abstract:
    There is provided a color separating-combining optical system having: a separating optical system which separates illumination light into a first color spectrum, and second and third color spectrums; a first polarization separating optical system with a first polarization separating surface, which guides the first color spectrum from the separating optical system to a first image display element and which analyzes light from the first image display element; a second polarization separating optical system with a second polarization separating surface, which separates the second and third color spectrums from the separating optical system from each other, which guides the second color spectrum to a second image display element, which guides the third color spectrum to a third image display element, and which analyzes light from the second image display element and light from the third image display element; and a combining optical system which combines light from the first polarization separating optical system with light from the second polarization separating optical system; wherein a polarization separation characteristic of the first polarization separating surface of the first polarization separating optical system is different from a polarization separation characteristic of the second polarization separating surface of the second polarization separating optical system.
Time: 5