CN205406067U - Self -adaptation environment type projecting apparatus - Google Patents

Abstract

The utility model discloses an adaptive environment projector, which comprises an optical system, a control unit and a projection mirror assembly. The control unit controls the optical system to perform optical projection through the projection mirror assembly according to the displayed image signal; it also includes detecting the brightness of the environment The brightness detection module, the control unit is connected with the brightness detection module signal and the control unit respectively controls the projected brightness of the optical system and the peak wavelength of the three primary colors according to the ambient brightness signal detected by the brightness detection module; through the brightness detection module, the existing brightness sensor can be used. The detection of ambient brightness, when the ambient brightness is high, the control unit increases the projected brightness and controls the peak wavelengths of the three primary colors to red-shift; Blue shift, to ensure reasonable projection brightness and bright colors of the projected picture, improve the projected picture, and improve the visual effect of the human eye.

Description

Adaptive Environment Projector

technical field

The utility model relates to a projector, in particular to an adaptive environment projector.

Background technique

In order to obtain better visual effects, projectors are generally required to be used in a darker environment, but in situations where projectors are frequently used in teaching and conferences, the dark environment is not conducive to students reading and taking notes, and is not conducive to attending meetings. For recording, etc.; there are very few brands of projectors that can be used in two modes, that is, bright environment and dark environment. By changing the projection light intensity of the projector, the projection effect in the bright environment has a certain improve. However, this method cannot make different changes to the projector according to the actual brightness of the environment. It can only switch between the two modes, and cannot adjust the projection brightness in time. The relative viewing function is different, resulting in that the visual effect of the human eye cannot be improved to the maximum extent only by changing the projected light intensity.

Therefore, in order to solve the above problems, an adaptive environment projector is needed, which can adjust projection parameters according to the light and shade of the environment, improve the projected picture, and improve the visual effect of human eyes.

Utility model content

In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide an adaptive environment projector, which can adjust projection parameters according to the light and shade of the environment, improve the projected picture, and improve the visual effect of human eyes.

The adaptive environment projector of the present utility model includes an optical system, a control unit and a projection mirror assembly, and the control unit controls the optical system to perform optical projection through the projection mirror assembly according to the displayed image signal; it also includes a brightness detection for detecting the brightness of the environment module, the control unit is connected to the brightness detection module by signal, and the control unit respectively controls the projected brightness of the optical system and the peak wavelengths of the three primary colors according to the ambient brightness signal detected by the brightness detection module.

Further, the optical system includes an optical system including a light source module and a liquid crystal light valve, and the control unit includes a brightness control output terminal connected to the liquid crystal light valve and a primary color wavelength control output terminal connected to the light source module; the light source module includes A light source controller and at least two groups of RGB-LED backlight sources corresponding to different peak wavelengths of the three primary colors. The light source controller selects a group of RGB-LED backlight sources to light up according to the control signal output by the control unit.

Further, the RGB-LED backlight includes a first RGB-LED backlight, a second RGB-LED backlight and a third RGB-LED backlight, and the peak wavelengths of the three primary colors of the second RGB-LED backlight are respectively greater than the first The peak wavelengths of the three primary colors of the RGB-LED backlight are smaller than the peak wavelengths of the third primary colors of the RGB-LED backlight.

Further, the light source module also includes a power control module for providing power to the light source module, the primary color wavelength control output terminal of the control unit is connected to the power control module, and the first RGB- One of the LED backlight, the second RGB-LED backlight and the third RGB-LED backlight supplies power.

The beneficial effects of the utility model are: an adaptive environment projector disclosed in the utility model can use the existing brightness sensor to detect the ambient brightness through the brightness detection module. Project brightness and control the peak wavelengths of the three primary colors to be red-shifted. When the ambient brightness is small, in a brighter environment, reduce the projected brightness and control the peak wavelengths of the three primary colors to blue-shift to ensure reasonable projection brightness and bright projection screen colors to improve the projection screen , improve the visual effect of the human eye.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Fig. 1 is the structural representation of the utility model.

detailed description

Fig. 1 is a structural schematic diagram of the present utility model, as shown in the figure, the adaptive environment projector in this embodiment includes an optical system, a control unit 1 and a projection mirror assembly 2, and the control unit 1 is based on the represented image signal The control optical system performs optical projection through the projection mirror assembly 2; it also includes a brightness detection module 3 for detecting ambient brightness, the control unit 1 is connected to the brightness detection module 3 and the control unit 1 respectively controls the optical projection according to the ambient brightness signal detected by the brightness detection module 3. The projection brightness of the system and the peak wavelengths of the three primary colors; the brightness detection module 3 can adopt the existing brightness sensor to detect the ambient brightness, and when the ambient brightness is large, the control unit 1 controls the three primary colors (comprising red, The peak wavelengths of green and blue light) are both red-shifted. In a brighter environment, the projected brightness is reduced and the peak wavelengths of the three primary colors are all blue-shifted. As shown in the figure, the sensitivity of the human eye to primary colors of different peak wavelengths in different brightness environments Different, change the peak wavelength of the primary color light to ensure the bright color of the projected picture, improve the projected picture, and improve the visual effect of the human eye.

In this embodiment, the optical system includes an optical system including a light source module and a liquid crystal light valve 4, and the control unit 1 includes a brightness control output connected to the liquid crystal light valve 4 and a primary color wavelength control output connected to the light source module terminal; the light source module includes a light source controller and at least two groups of RGB-LED backlights corresponding to different peak wavelengths of the three primary colors. The peak wavelength of green in the RGB-LED backlight is 555nm, and the peak wavelength of green in another set of RGB-LED backlight is 525nm, so as to meet the needs of human eyes with different ambient brightness; the light source controller outputs according to the control unit 1 The control signal selects a group of RGB-LED backlights to light up; the RGB-LED backlights include a first RGB-LED backlight 5a, a second RGB-LED backlight 5b and a third RGB-LED backlight 5c, the first RGB-LED backlight 5c, The peak wavelengths of the three primary colors of the second RGB-LED backlight 5b respectively correspond to the peak wavelengths of the three primary colors greater than the first RGB-LED backlight 5a and smaller than the peak wavelengths of the third RGB-LED backlight 5c; the projection screen is controlled by liquid crystal, and the technology is mature. The structure is simple, the liquid crystal light valve 4 includes a plurality of pixels, each pixel includes three sub-pixels composed of three primary colors (including three sub-pixels of red, green and blue), the transmittance and reflectance of the liquid crystal light valve 4 are controlled by the control unit 1, To control the brightness and display color of each pixel, this embodiment realizes the peak wavelength control of the three primary colors by setting multiple RGB-LED backlight sources and switching between different backlight sources. The structure is simple and the control is convenient.

In this embodiment, the light source module further includes a power control module 6 for supplying power to the light source module, the primary color wavelength control output terminal of the control unit 1 is connected to the power control module 6 and is controlled by the power control module 6 according to Select one of the first RGB-LED backlight 5a, the second RGB-LED backlight 5b, and the third RGB-LED backlight 5c to supply power to the ambient brightness; A group of RGB-LED backlights composed of single-color LEDs can improve the combination of the three primary colors and help improve the applicability of the projector in different environments; both the control unit 1 and the power control module 6 can use unique single-chip microcomputers to realize this utility model. Novel purpose of the invention will not be repeated here.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (4)

1. an adaptive environment type projector, it is characterised in that: including optical system, control unit and projectoscope assembly, described control unit carries out optical projection according to being expressed picture signal control optical system by projectoscope assembly；Also including the brightness detection module of detection ambient brightness, control unit is connected with brightness detection module signal and control unit controls the projection brightness of optical system and trichromatic peak wavelength respectively according to the ambient light signal that brightness detection module detects.

2. adaptive environment type projector according to claim 1, it is characterized in that: described optical system includes optical system and includes light source module and liquid crystal light valve, described control unit includes the brilliance control outfan being connected with liquid crystal light valve and the primary color wavelength control output end being connected with light source module；Light source module includes the RGB-LED backlight that light source controller is different with at least two groups corresponding three primary colors peak wavelength, and described light source controller selects one group of RGB-LED backlight to light according to the control signal that control unit exports.

3. adaptive environment type projector according to claim 2, it is characterized in that: described RGB-LED backlight includes a RGB-LED backlight, the 2nd RGB-LED backlight and the 3rd RGB-LED backlight, the 2nd trichromatic peak wavelength of RGB-LED backlight is respectively to should be greater than a trichromatic peak wavelength of RGB-LED backlight and less than the 3rd trichromatic peak wavelength of RGB-LED backlight.

4. adaptive environment type projector according to claim 3, it is characterized in that: described light source module also includes the energy supply control module for providing power supply to light source module, the primary color wavelength control output end of described control unit is connected with energy supply control module and passes through energy supply control module according to a power supply in ambient brightness selection the oneth RGB-LED backlight, the 2nd RGB-LED backlight and the 3rd RGB-LED backlight.