Patent ID: 7136035

Claim:
A projection type display, comprising: an illumination device; a light modulation device that modulates light emitted from the illumination device; and a projection device that projects light modulated by the light modulation device; the illumination device being provided with a light source, a uniform illumination device making a distribution of illumination of light incident from the light source uniform, and a liquid crystal element for light adjustment, installed on an optical axis of light emitted from the light source, for adjusting the flux of light emitted from the light source, a flux of light emitted from the illumination device per unit time is adjustable by driving the liquid crystal element for light adjustment with time-sharing between a high transmittance ratio and a low transmittance ratio in response to information from outside, and a signal applied to the light modulation device being changed based on a signal supplied to the liquid crystal element for light adjustment, such that color tone being changed by the liquid crystal element for light adjustment, the changed color tone of light emitted from the liquid crystal element for light adjustment being correctable by the light modulation device.