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Multi-color wheel synchronization method and laser projection device

A technology of color wheel and wheel surface, applied in projection devices, optics, instruments, etc.

Active Publication Date: 2016-05-04
QINGDAO HISENSE LASER DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a multi-color wheel synchronization method and a laser projection device to solve the problem of how to realize the precise synchronization of multi-color wheels simply and quickly

Method used

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  • Multi-color wheel synchronization method and laser projection device
  • Multi-color wheel synchronization method and laser projection device
  • Multi-color wheel synchronization method and laser projection device

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Embodiment Construction

[0078]In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0079] An embodiment of the present invention provides a method for synchronizing a color wheel of a laser light source, which can be applied to a projection device such as a projector.

[0080] Such as figure 1 As shown, it is a schematic flowchart of a method for synchronizing multiple color wheels according to an embodiment of the present invention.

[0081] see figure 1 , the method includes:

[0082] Step 101: Detect the first area ...

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Abstract

The invention discloses a multi-color wheel synchronization method and a laser projection device. A first area in a wheel surface of a first color wheel is detected through a first sensor group, and a first level jump signal is generated when the first color wheel detects the first area for the first time during each rotation cycle; a second area in a wheel surface of a second color wheel is detected through a second sensor group, and a second level jump signal is generated when the second color wheel detects the second area for the first time during each rotation cycle; and whether the time difference between the first level jump signal and the second level jump signal is a threshold is judged, and if not, the rotation speed of the first color wheel and / or the second color wheel is adjusted to enable the time difference between the first level jump signal and the second level jump signal to be the threshold.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for synchronizing multiple color wheels of a laser light source and a laser projection device. Background technique [0002] At present, projectors are widely used in various applications such as movie playback, conferences, and publicity. As we all know, in the light source of a projector, a phosphor wheel is often used to provide a sequence of colored light. Wherein, the different color segments of the phosphor wheel are alternately and periodically arranged on the propagation path of the excitation light, and then the excitation light is used to excite the fluorescent materials on the different color segments of the phosphor wheel to generate fluorescence of different colors. However, due to the wide spectral range produced by the fluorescent material, the color purity of some fluorescent materials is insufficient, resulting in an insufficient color gamut of the lig...

Claims

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Application Information

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IPC IPC(8): G03B21/20
CPCG03B21/204G03B21/206
Inventor 崔荣荣李健锋郭大勃
Owner QINGDAO HISENSE LASER DISPLAY CO LTD
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