Light propagation structure and optical display device of optical system, light propagation method of optical system, and display method of optical display device

An optical display device that displays images by modulating light from a light source through a first optical modulation element and each of a plurality of second optical modulation elements, comprising:

• a light source, a first optical modulation device having a plurality of pixels capable of independently controlling light propagation characteristics, an optical separation unit that divides light form the first optical modulation element into a plurality of different specific wavelength regions, a plurality of second optical modulation elements into which light divided with the optical separation unit respectively enters and have a plurality of pixels capable of independently controlling light propagation characteristics, and a light synthesis unit that synthesizes light from each of the second optical modulation elements, wherein
• a relay optical system is provided in the light path of the first optical modulation element and the optical separation unit that forms an optical image of the first optical modulation element on the pixel surfaces of each of the second optical modulation elements.

A light propagation method applied to an optical system that modulates light from a light source through a first optical modulation element and each of a plurality of second optical modulation elements, comprising:

• a first optical modulation element having a plurality of pixels capable of independently controlling light propagation characteristics, an optical separation unit that divides light from the first optical modulation element into light of a plurality of different specific wavelength regions, and a plurality of second optical modulation elements into which the light divided with the optical separation unit respectively enter and having a plurality of pixels capable of independently controlling light propagation characteristics, wherein
• an optical image of the first optical modulation element is formed on the pixel surfaces of each of the second optical modulation elements through a relay optical system in the light path of the first optical modulation element and the optical separation unit.

A display method of an optical display device that displays images by modulating light from a light source through a first optical modulation element and each of a plurality of second optical modulation elements, comprising:

• a light source, a first optical modulation device having a plurality of pixels capable of independently controlling light propagation characteristics, an optical separation unit that divides light form the first optical modulation element into a plurality of different specific wavelength regions, a plurality of second optical modulation elements into which light divided with the optical separation unit respectively enters and have a plurality of pixels capable of independently controlling light propagation characteristics, and a light synthesis unit that synthesizes light from each of the second optical modulation elements, wherein
• an optical image of the first optical modulation element is formed on the pixel surfaces of each of the second optical modulation elements through a relay optical system in the light path of the first optical modulation element and the optical separation unit.