Light source device of field sequential color three-dimensional projector and light source control method

Abstract

The invention discloses a light source device of a field sequential color three-dimensional projector and a light source control method. The light source device comprises a light emitting module and a control module. The light emitting module comprises a plurality of semiconductor light emitting units. The control module is electrically connected with the light emitting module and used for controlling the semiconductor light emitting units to selectively emit lights so as to periodically generate a plurality of color sections and a darkness shielding section; and a colorless section of the darkness shielding section is generated by using the control module to close the semiconductor light emitting units, wherein the total driving power of the semiconductor light emitting units is equal to a rated power of the light emitting module. Therefore, according to the invention, the problem that the energy is wasted because the light source is still used for emitting lights in the darkness shielding section in the prior art is solved, and the driving power of the color section is increased to improve the quality of a projected image.

Description

technical field [0001] The invention relates to a light source device and a light source control method, in particular to a light source device installed in a field sequential color stereoscopic projector and a light source control method thereof. Background technique [0002] The field sequential color stereoscopic projector uses alternately projecting left and right eye images, and is equipped with liquid crystals on the stereoscopic glasses to switch alternately, so that the user's left and right eyes can correctly receive the left and right eye images to achieve stereoscopic images. Effect. Currently, the liquid crystal response time is about 2ms, so there needs to be an interval of 2ms between sequentially projected images to avoid mutual interference between the left and right eye images. In current projectors, halogen bulbs are mostly used as light sources to continuously provide incandescent light. The projector can use the blackout area formed on the color wheel t...

AI Technical Summary

Problems solved by technology

In any case, the light source will continue to consume energy during the liquid crystal switching period, resulting in unnecessary waste

[0003] In addition, based on the purpose of power management, the light source has a rated power and consumes a fixed amount of energy in a cycle

Because the light source of the known projector still consumes energy during the liquid crystal switching period, the overall effective energy for projection decreases, resulting in insufficient brightness of the projected image

Moreover, it is known that 3D glasses often have the problem of color shift. If DMD is used to adjust the relative projection brightness of each color light to improve the color shift, the energy efficiency effectively used for projection will be reduced.

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