Bread Pitt
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Digital Light Processing: It is designed according to the Digital Micromirror Nothing (DMD) developed by Texas Instruments in the United States, with the surface digital micromirror device (DMD) as the reflection A projection technology in which light projects an image onto a screen. DMD films contain thousands of micromirrors, each mirror represents a pixel, and an image can be created when it is turned on or off.
DLP produces colors due to the color wheel (composed of red, green, and blue) placed on the path of the light source.
LCD (Liquid Crystal Display) projectors are divided into liquid crystal panel projectors and liquid crystal light valve projectors.
Liquid crystal is a substance between liquid and solid, which does not emit light itself, and its working properties are greatly affected by temperature. Its working temperature is -55 ℃ ~ + 77 ℃.
The projector uses the photoelectric effect of liquid crystal, that is, the arrangement of liquid crystal molecules changes under the action of an electric field, which affects the light transmittance or reflectance of its liquid crystal cell, thereby affecting its optical properties and producing images with different gray levels and colors.
The principle of the three-chip LCD panel projector is that the optical system passes the strong light through the beam splitter to form three RGB beams of light, which are respectively transmitted through the RGB three-color liquid crystal panel; the signal source undergoes AD conversion, modulation is added to the liquid crystal panel, and the opening of the liquid crystal unit is controlled , Closed, thereby controlling the on and off of the optical path, RGB light finally converged in the prism, projected on the screen by the projection lens to form a color image.
Therefore, the optical path and imaging principle of DLP and LCD projectors are essentially different. They have their own advantages and disadvantages. When DLP is compared with LCD, there will be a certain gap in color reproduction and expressiveness, especially under certain specific screens. This difference is more obvious, so if you want to emphasize the true reproduction of a certain picture, DLP may have a certain disadvantage, which is determined by its own imaging principle.
In addition, the color will also be affected by factors such as lamp brightness. Therefore, customers are advised not to compare the color reproduction capabilities between LCD and DLP (especially projectors with different parameters), they have their own advantages and disadvantages.
DLP produces colors due to the color wheel (composed of red, green, and blue) placed on the path of the light source.
LCD (Liquid Crystal Display) projectors are divided into liquid crystal panel projectors and liquid crystal light valve projectors.
Liquid crystal is a substance between liquid and solid, which does not emit light itself, and its working properties are greatly affected by temperature. Its working temperature is -55 ℃ ~ + 77 ℃.
The projector uses the photoelectric effect of liquid crystal, that is, the arrangement of liquid crystal molecules changes under the action of an electric field, which affects the light transmittance or reflectance of its liquid crystal cell, thereby affecting its optical properties and producing images with different gray levels and colors.
The principle of the three-chip LCD panel projector is that the optical system passes the strong light through the beam splitter to form three RGB beams of light, which are respectively transmitted through the RGB three-color liquid crystal panel; the signal source undergoes AD conversion, modulation is added to the liquid crystal panel, and the opening of the liquid crystal unit is controlled , Closed, thereby controlling the on and off of the optical path, RGB light finally converged in the prism, projected on the screen by the projection lens to form a color image.
Therefore, the optical path and imaging principle of DLP and LCD projectors are essentially different. They have their own advantages and disadvantages. When DLP is compared with LCD, there will be a certain gap in color reproduction and expressiveness, especially under certain specific screens. This difference is more obvious, so if you want to emphasize the true reproduction of a certain picture, DLP may have a certain disadvantage, which is determined by its own imaging principle.
In addition, the color will also be affected by factors such as lamp brightness. Therefore, customers are advised not to compare the color reproduction capabilities between LCD and DLP (especially projectors with different parameters), they have their own advantages and disadvantages.
