| 摘要 |
The invention relates to the field of optoelectronics, and may be used in devices and of visualization, displaying, storage and processing of information, in particular in projection displays, etc. Video projector consists of a liquid crystal micro display based on structure FLCoS, and an optical unit of reading the information formed in the structure FLCoS, containing a light source and projection optics, optically coupled to the structure FLCoS, and a screen, onto which the information is projected. As the electro-optical material the low-voltage ferroelectric liquid crystal (FLC) with compensated helix providing physically realizable, continuous, halftone, hysteresis-free modulation characteristic is used in the structure FLCoS. Lasers of red, green and blue radiation serve as the sources of light in three different color channels RGB. To destroy the ability of their radiation to the interference, a cell with FLC is inserted into the optical unit of information reading that implements fast electrically controlled spatial phase light modulation with a depth of ≧π, and in order to form on the screen the information blocks with a capacity of 108 . . . 109 pixels, with different geometric configurations a two-dimensional scanner is input, which optically coupled to the optical unit of information reading and to the screen. The technical result is an increase of frame rate, expanding the color gamut, brightness enhancement, noise reduction. |
| 主权项 |
1. Video projector comprising a liquid crystal micro display based on the structure FLCoS with a ferroelectric liquid crystal (FLC) and an optical unit of readout the information formed in the structure FLCoS, containing a light source and projection optics, optically coupled to the structure FLCoS and a screen on which this information is projected, wherein that
FLC used as the electro optical material in the structure FLCoS, is selected helix-free, i.e. with the wave vector of a helix q0=2π/p0 tending to zero, where p0 is a helix pitch, the value of FLC rotation viscosity is in the range of 0.3<γφ<1.0 Poise, the value of the spontaneous polarization PS does not exceed 50 nC/cm2, and the magnitude of the modulus of elasticity K, which determines the deformation along FLC smectic layers is in the range (1÷3)·10−12 Newton; Lasers of red, green and blue emission are selected to be as a light source in three different RGB color channels, and For destroying the ability of laser radiation to the interference a cell with FLC is inserted into the optical unit of information readout implementing the fast electrically controlled spatial phase modulation of radiation with a depth ≧π, and For forming on a screen the information blocks with capacity of 108 . . . 109 pixels and with different geometric configuration the two-dimensional scanner is inserted optically coupled with an optical unit of information readout and with a screen on which this information is projected. |
