Projection type displaying apparatus and prism used in said apparatus
A technology of a display device and a prism, which is applied in the field of prisms and can solve the problems of difficulty in realizing thinning of a projection type display device and the like
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[0034] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in the following embodiments, unless otherwise defined, the three mutually orthogonal axes are defined as x, y, and z, the traveling direction of light (direction parallel to the optical axis) is defined as the z axis, and The horizontal direction and the vertical direction are defined as the x-axis direction and the y-axis direction, respectively.
[0035] FIG. 1 is a schematic configuration diagram of a main part of a projection display device according to an embodiment of the present invention viewed on a plane. This projection display device 1000 includes an illumination optical system 100 , a micromirror light modulation device 200 , a prism 300 , and a projection lens (projection optical system) 400 . The micromirror-type light modulation device 200 and the projection lens 400 are arranged such that their respective central axes 200ax and 300ax coincid...
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