Speckle eliminating part, laser source and laser projection device
A laser light source and speckle dissipation technology, applied in the field of projection display, can solve problems such as reducing user viewing experience, dizziness and discomfort, and degradation of projected image quality, so as to improve user experience and product competitiveness, and reduce speckle effect and speckle. effect of mitigating effect
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Embodiment 1
[0041] Embodiment 1 of the present invention provides a speckle dissipating component, such as Picture 1-1 As shown, to receive the irradiation of laser beams, it specifically includes a first diffusion sheet 11 and a second diffusion sheet 12 , and a driving component 13 . Wherein, the first and second diffusing sheets 11, 12 have a common rotating shaft 15, and the driving part 13 drives the common rotating shaft 15 to respectively drive the first and second diffusing sheets 11, 12 to rotate, wherein, the first diffusing sheet 11 is fixed on the common On the rotating shaft 15 , the second diffusing sheet 12 is movably connected to the common rotating shaft 15 , specifically, the second diffusing sheet 12 is connected to the common rotating shaft 15 through a movable connection 14 .
[0042] In a specific implementation, the movable link 14 can be a bearing structure, the bearing is sleeved on the common rotating shaft 15 through balls, and can slide relative to the common r...
Embodiment 2
[0062] In order to describe the technical solutions provided by the embodiments of the present invention more clearly, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings by taking the embodiment of the laser light source using the speckle dissipating component of the present invention as an example.
[0063] see figure 2 , is a schematic diagram of an optical architecture based on a two-color light source using a speckle dissipating component in an embodiment of the present invention.
[0064] As shown in FIG. 1 , the structure of the two-color laser light source includes: a red laser array 201 and a blue laser array 202 , which respectively emit red laser light and blue laser light. And the wavelength converting device 206 is specifically a fluorescent wheel in this embodiment. The fluorescent wheel is provided with green fluorescent powder, which can receive blue laser light as excitation light for wavel...
Embodiment 3
[0077] Based on the speckle elimination component introduced in Embodiment 1, this embodiment also provides an optical architecture of a three-color laser light source, using the speckle elimination component described above.
[0078] see image 3 , the optical structure of the laser light source in this embodiment includes: a semiconductor laser group 301 , a light combining lens group 502 , a speckle elimination component 303 , a focusing lens 304 , a fly-eye lens group 305 , and an integrating lens 306 .
[0079] Wherein, the semiconductor laser group 501 may specifically include three-color lasers, which emit three-color laser beams, that is, the laser light source in this embodiment is a pure laser light source. Generally, the beam emitted by the laser will be slightly divergent. In order to facilitate the utilization of the optical path, the laser emitted by the semiconductor laser needs to be collimated. The three-color laser beams are collimated and arrive at the ligh...
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