Prisme dichroique croisé

Cross dichroic prism

Dichroitisches Kreuzprisma

Abstract

In a cross dichroic prism wherein four square pillar prisms (1,2,3,4) of which the total of the angles including the prism ridge lines is 360° are joined together with the prism ridge lines thereof made coincident with one another and prism sides forming the respective prism ridge lines are joined together so that the joined surface thereof may become two planes intersecting with each other, and dichroic film is provided on the joined surface, when the lengths of perpendiculars from a point on the prism ridge line to the non-joined surfaces of the respective square pillar prisms are defined as L1, L2, L3 and L4,       L1 ≠ L2 = L3 = L4 is satisfied.

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (6)

    Publication numberPublication dateAssigneeTitle
    EP-0945749-A2September 29, 1999Balzers Hochvakuum AGOptical component
    GB-475415-ANovember 15, 1937Adrian Bernard KleinImprovements in or relating to optical systems
    JP-H02220040-ASeptember 03, 1990Kawasaki Heavy Ind LtdImage projecting device
    US-4249205-AFebruary 03, 1981Marvin P. HodgesAspheric projection lens system utilizing concave image
    US-5546200-AAugust 13, 1996Thomson-CsfChromatic light separator and picture projector using a chromatic light separator
    US-6019474-AFebruary 01, 2000International Business Machines CorporationModified X-cube arrangement for improved contrast projection display

NO-Patent Citations (1)

    Title
    PATENT ABSTRACTS OF JAPAN vol. 014, no. 525 (P - 1132) 19 November 1990 (1990-11-19)

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    US-7300156-B2November 27, 2007Hewlett-Packard Development Company, L.P.Prism assembly for separating light
    WO-2006065351-A2June 22, 2006Hewlett-Packard Development Company, L.P.Prism assembly for separating light
    WO-2006065351-A3August 10, 2006Anurag Gupta, Hewlett Packard Development Co, Scott A Lerner, James W RingEnsemble de prisme pour la separation de la lumiere