Device used for whole row scanning type laser projection display and synchronization control method thereof
A laser display and scanning device technology, applied in projection devices, optics, optical components, etc., can solve problems such as fire hazards, high laser beam power, and complex two-dimensional scanning devices
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no. 1 example
[0063] Please refer to figure 1 , which is a schematic diagram of an optical path formed by one pixel of the full-line scanning laser display device of the present application. Such as figure 1 As shown, the laser generator module 100 includes a red laser 102c, a green laser 102b and a blue laser 102a, a first dichroic mirror 106 and a second dichroic mirror 208, a first right-angle corner 204 and a second right-angle corner 202. The arrangement of the above optical devices is as follows figure 1 shown.
[0064] The red laser beam emitted by the red laser 102c is reflected by the first right-angle prism 204, and the direction of propagation is turned by 90° to irradiate on the first dichroic mirror 106; the first dichroic mirror 106 transmits green light and reflects red light; carefully Adjusting the distance between the first right-angled corner 204 and the red laser (that is, moving the first right-angled corner 204 in the horizontal direction), and rotating the firs...
no. 2 example
[0076] In this embodiment, the scanning device is the same as the above embodiment, except that the way of forming a single pixel is different. Please refer to Figure 6 , which is a schematic diagram of the optical path for forming a single pixel in the second embodiment of the scanning laser display device of the present application. In this embodiment, the laser generator module includes red, green, and blue three-color lasers (102c, 102b, 102a), and collimation elements (210a, 210b, 210c; 212a , 212b, 212c);
[0077] The light guide device includes an optical fiber corresponding to each laser, and the coupling end of each optical fiber is provided with a coupling joint SMA905 or an FC joint as the laser coupling interface; the coupling joint is arranged on the light guide In the collimated optical path of the laser corresponding to the fiber, and facing the incoming light direction, it is used to receive the laser beam emitted by the corresponding laser; bonded together...
no. 3 example
[0081] In this embodiment, the implementation of the monochrome pixel is basically the same as that of the above-mentioned second embodiment, the difference is that the light-emitting end surface of the optical fiber corresponding to one of the blue lasers 103b is provided with a phosphor coating, such as Figure 10 The phosphor coating shown in , was used to generate green light under blue laser excitation. Other aspects of this embodiment are the same as the above-mentioned second embodiment. The advantage of this embodiment is that the image speckle is very weak.
[0082] As mentioned above, a plurality of (such as 768) colored light beams are emitted by a one-dimensional imaging device or device, and after passing through a collimating lens and a cylindrical lens, they are irradiated to a rotating polygonal mirror (a regular octagonal prism in the above-mentioned embodiments of the application, in In actual use, it is not limited to one face of a regular octagonal prism);...
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