Speckle eliminating device and method and projection display equipment
A technology for dissipating speckles and scattering agents, which is applied in the field of projection display and can solve problems such as vibration noise, complex structure, and wear of mechanical parts.
Pending Publication Date: 2020-06-23
QINGDAO HISENSE LASER DISPLAY CO LTD
View PDF14 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The embodiment of the present application provides a speckle dissipating device, method, and projection display device, which solves the problems of mechanical wear, vibration noise, or complex structure in mechanical movement in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0069] 3. Pour preparation A mixed with scattering agent into preparation B (film main material, such as silicone rubber), and obtain elastic EAP film doped with scattering agent according to the film preparation method.
[0070] Optionally, the curing time and curing temperature can be adjusted according to the thickness of the electro-deformable material film doped with the scattering agent and the dose of the scattering agent, so as to enhance the elongation, light transmittance and strength of the electro-deformable material film doped with the scattering agent; For example, if the thickness of the electro-deformable material film doped with scattering agent is thicker or the dose of scattering agent is large, the curing time and curing temperature will be increased.
[0071] The EAP thin film doped with a scattering agent involved in the embodiment of the present application can also be prepared in other ways, which is not limited in the embodiment of the present applicati...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| transmittivity | aaaaa | aaaaa |
| elongation | aaaaa | aaaaa |
Login to View More
Abstract
The embodiment of the invention provides a speckle eliminating device and method and projection display equipment. The speckle eliminating device comprises an electrodeformation material film doped with a scattering agent, a light-transmitting conductive film located on the surface of the electrodeformation material film and a plurality of control circuits. The light-transmitting conductive film can comprise a plurality of independent conductive sub-regions, different conductive sub-regions are connected to different control circuits, and any control circuit is used for applying a voltage signal to the corresponding conductive sub-region. Due to the fact that voltage signals applied by different control circuits are different, different sub-film areas in the electro-deformation material film can deform to different degrees, incident light irradiating into the corresponding sub-film areas through the light-transmitting conductive film is scattered to different degrees, and laser specklesuppression is achieved. According to the embodiment, the problems of mechanical part abrasion and vibration noise in the prior art are solved, meanwhile, the structure is simple, and space is saved.
Description
technical field [0001] The present application relates to the technical field of projection display, and in particular to a speckle elimination device, method and projection display equipment. Background technique [0002] As projection display devices are widely used, people's display requirements for projection display devices are also increasing. Currently, lasers are used as potential light sources for next-generation projection display devices. Since the laser is a highly coherent light source, a very serious scattering phenomenon will occur during the display process, forming laser speckle, which seriously affects the quality of the laser display image. Therefore, how to suppress laser speckle is an urgent problem to be solved in the field of laser display. [0003] At present, the methods of eliminating laser speckle can be divided into two categories in principle: reducing the coherence of laser light source and suppressing speckle by dynamic superposition of multi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/48G02B26/00
CPCG02B27/48G02B26/00
Inventor 宋丽培王静茹郭汝海刘显荣田有良
Owner QINGDAO HISENSE LASER DISPLAY CO LTD