Patent ID: 8864317
Filing Date: 2014-10-21
Classification: G03B,H04N

Abstract:
1. A projection display, comprising: a light source section; a light modulation element modulating, based on an image signal, light emitted from the light source section; and a projection lens projecting the light modulated by the light modulation element onto a plane of projection, wherein the following formulas (1) and (2) are satisfied: where: F is an F-number of the projection lens; W′ is a diagonal size (inch number) of the light modulation element; ph is a pixel count in one side direction of the light modulation element; T is a throw ratio of the projection display itself (=a projection distance s/a distance L in the one side direction of a projected image on the plane of projection); R is a radius of an exit pupil of the projection lens; I is an integrated quantity of light obtained by, in a distribution of a quantity of light in the exit pupil of the projection lens, radially integrating the quantity of light up to the radius R of the exit pupil; and I′ (=I/2) is an integrated quantity of light obtained by, in the distribution of the quantity of light in the exit pupil, radially integrating the quantity of light up to a predetermined radius R′ about barycenter of the distribution of the quantity of light.