Technology integration research method based on 8K tilt-shift lens

Abstract

The invention discloses a technology integration research method based on an 8K tilt-shift lens. The technology integration research method comprises the following steps: establishing a proper chip design scheme; all laser light sources are concentrated in a light receiving area of the lighting system through a multi-reflector framework and a beam expanding / collecting optical method; establishing a zoom tilt-shift lens technical system; developing a tilt-shift lens technology; the sensitivity design and the structure fixation / reliability design of the optical system are realized at the same time through a process adjustment mechanism; developing a galvanometer module with a temperature compensation mechanism and an automatic image acquisition system; performing long-term inspection and verification on the lighting system; a multi-reflector architecture, a beam expanding / collecting optical technology, a zoom tilt-shift lens technology and an optimal angle compensation technology are integrated. By means of the mode, the problems that in an 8K system, the optical size is large, gaps are increased when multiple movable independent lens groups are considered in the zoom tilt-shift technology, and the tilt-shift technology conflicts are solved, and meanwhile the automatic adjusting function of the camera is optimized.

Description

Technical Field

[0001] The present invention belongs to the fields of optoelectronic technology and precision manufacturing, and particularly relates to a technical integration research method based on an 8K shift lens. Background Art

[0002] 4K resolution usually refers to 3840×2160 pixels, which is 4 times that of full high definition (FHD, 1920×1080 pixels), and can provide a relatively delicate and realistic picture effect. It has many advantages such as rich colors, wide viewing angles, and high dynamic ranges, and has very important applications in film and television entertainment, medical treatment, etc. 4K technology is widely used in life and has a high popularity. However, in professional fields such as film production and digital art, there are higher pursuits for resolution and imaging quality. Compared with 4K, 8K technology has four times the number of pixels, is clearer, and has a wider viewing angle. Therefore, 8K technology has become a research hotspot. However, there are problems such as difficult implementation and high costs. The present invention aims to study 8K technology, solve the problems of a relatively large optical volume in the 8K system, an increase in gaps caused by the zoom shift technology when taking into account multiple movable independent lens groups, and conflicts in the shift technology, and at the same time optimize the automatic adjustment function of the camera. Summary of the Invention

[0004] The purpose of the present invention is to propose a technical integration research based on an 8k shift lens to solve the problems of low video clarity, relatively large optical volume, the balance between shift and zoom technologies, and the automatic optimization and innovation of cameras as well as technical integration in the prior art.

[0005] The technical solution adopted by the present invention is as follows: A technical integration research method based on an 8k shift lens: Step 1: Establish a suitable chip design scheme, study the 8K shift zoom lens technology, and establish a miniaturized 8K projection optical system to reduce the volume of its optical system; Step 2: Through a multi-mirror architecture and an optical method of beam expansion / beam contraction, concentrate all laser light sources in the light collection area of the illumination system, and the light divergence angle of the illumination optical system will be greatly reduced, thereby effectively controlling the volume of the optical system; Step 3: Establish a zoom shift lens technology system, and by developing multiple movable independent lens groups, adjust the magnification of the entire projection lens and achieve the zoom function; Step 4: Develop the shift lens technology, and by increasing the imaging circle of the projection lens, ensure good projection quality can be achieved when the display chip is located at any position; Step 5: Solve the problem of balancing the shift lens technology and the zoom lens technology, and achieve the simultaneous realization of the sensitivity design of the optical system and the structure fixation / reliability design through a process adjustment mechanism; Step 6: Optimize the design of angle deviation compensation by developing a galvanometer module with a temperature compensation mechanism and an automated image capture system, and ensure the best resolution quality for any product at any temperature; Step 7: Conduct long-term inspections and verifications of the lighting system for the problem of optical system aging caused by high-intensity laser light sources; Step 8: Integrate multiple mirror architectures with beam expansion / beam contraction optical technologies, zoom shift lens technologies, and optimized angle compensation technologies to achieve an 8K laser shift long-focus projection system that integrates resolution, brightness, and color gamut, and realize the integration of multiple technologies.

[0006] Step 2.1: Make full use of the characteristics of the small light divergence angle of the laser light source. With a multiple mirror architecture and a beam expansion / beam contraction optical system, all laser light sources are concentrated in the light-receiving area of the lighting system, and the light can be effectively converged to a small area. At this time, the optical étendue of the lighting optical system can be effectively reduced; Step 2.2: The reduction of the optical étendue causes the light divergence angle of the lighting optical system to drop significantly, and the volume and relative distance of the required optical components can also be shortened; Step 2.3: Reduce the light angle of the lighting optical system, and the light angle that the projection lens needs to receive also follows to decrease. At this time, the diameter of the required light-receiving lens can also be reduced, enabling the system to have the advantage of a reduced projection lens, thereby improving the optical quality; Step 3.1: Create multiple movable independent mirror groups to adjust the magnification of the projection lens and achieve the zoom function; Step 3.2: Design an inter-mirror control module to avoid excessive cumulative gaps affecting the optical imaging quality by controlling the gaps between multiple movable independent mirror groups; Step 4.1: Increase the imaging circle of the projection lens to ensure good projection quality when the display chip is located at any position; Step 4.2: Solve the sensitivity design of the optical system and the structure fixation / reliability design. After matching with the process adjustment mechanism, ensure that the 8K zoom shift lens can be adjusted to the best resolution at different positions and different focal lengths; Step 4.3: Since the linkage mirror group of the 8K zoom shift lens requires good relative decentration and the stability of the shift system, a metal lens barrel processed by a digital machine tool will be used. The internal structure of the lens barrel can be processed at one time by the digital machine tool to ensure the best accuracy of the inner side of the lens barrel. The metal lens barrel will also introduce a process of blackening the anti-light surface to ensure that the lens barrel still maintains a good function of eliminating stray light after long-term use; Step 6.1: Introduce a temperature influence mechanism and incorporate it into the galvanometer module as a sub-module of the temperature control circuit; Step 6.2: Use the extinction design of the ceramic surface blackening technology to blacken the protective ceramic surface of the galvanometer module, so that the module surface absorbs light for a long time and reduces the module temperature; Step 6.3: Design heat energy guidance to conduct the temperature outside the system main body to avoid the risk of the optical system temperature rising; Step 6.4: Through the temperature / amplitude algorithm system, establish the amplitude curve corresponding to different temperatures to ensure the working quality of the galvanometer module at different temperatures; Step 7.1: Joint development and long-term verification are required for optical materials, coating materials, and coating processes to ensure stable optical quality during long-term service life; Step 7.2: Record the linear change of the transmittance of each wavelength and draw the change diagram of each wavelength and transmittance to ensure stable brightness and color; Step 7.3: Test different materials and different fixed structures, select the all-metal fixed structure with less brightness attenuation and the low-volatility surface treatment process, consider the difference in the expansion rate between optical parts and structural parts, and reserve gaps to avoid expansion and rupture.

[0007] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: 1. A technical integration research based on an 8K shift lens uses a multi-mirror architecture to reduce the volume of the optical system and improve optical quality; combines zoom shift lens technology with an autofocus function, breaks through the limitations of projection size and position, realizes electric adjustment of the image position, solves the problem of image quality and resolution decline at different positions after adjustment, and effectively solves the conflict of shift technology. At the same time, the present invention also breaks through the galvanometer automatic camera optimization technology and realizes the optimization of galvanometer parameters, thus ensuring the best image quality.

[0008] 2. In step 2 of the present invention, by using the characteristic of the small divergence angle of the laser light source, the light is concentrated at the light-receiving position, effectively reducing the optical étendue of the illumination optical system, shortening the volume and relative distance of the required optical components, reducing the diameter of the required light-receiving lens, and improving the optical quality by reducing the aperture. Even the projection lens design can be further simplified, and finally the volume of the optical system is reduced.

[0009] 3. In step 5 of the present invention, the sensitivity design of the optical system and the structure fixation / reliability design are taken into account, and a process adjustment mechanism is used to realize the development of the shift zoom lens.

[0010] 4. In step 6 of the present invention, a temperature control sub-module is developed for the temperature problems of the system and the chip. The protective ceramic surface of the galvanometer module is blackened by using the extinction design of the ceramic surface blackening technology, so that the module surface absorbs light for a long time and reduces the module temperature. Description of the Drawings

[0011] Figure 1 This is the technical roadmap of the research and application project on the key technology of shift-zoom projection for this application. Specific implementation manners

[0012] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0013] The following is in conjunction with Figure 1 to describe the present invention in detail.

[0014] A technical integration research method based on an 8K shift lens, as Figure 1 shown, includes the following steps: Step 1: Establish a suitable chip design scheme, research the 8K shift-zoom lens technology and establish a miniaturized 8K projection optical system to reduce the volume of its optical system.

[0015] Step 2: Through the multiple mirror architecture and the optical method of beam expansion / beam contraction, all laser light sources are concentrated in the light-receiving area of the illumination system, and the light divergence angle of the illumination optical system will be greatly reduced, thereby effectively controlling the volume of the optical system. The specific steps of Step 2 are as follows: Step 2.1: Make full use of the characteristic of the small light divergence angle of the laser light source. By means of the multiple mirror architecture and the beam expansion / beam contraction optical system, all laser light sources are concentrated in the light-receiving area of the illumination system. Utilizing the characteristic of the small divergence angle of the laser light source, the light can be effectively converged on a small area. At this time, the optical étendue of the illumination optical system can be effectively reduced; Step 2.2: The reduction of the optical étendue enables the light divergence angle of the illumination optical system to be greatly reduced, and the volume of the required optical components and the relative distance can also be shortened; Step 2.3: When the light angle of the illumination optical system is reduced, the light angle that the projection lens needs to receive also follows to be reduced. At this time, the diameter of the required light-receiving lens can also be reduced, enabling the system to have the advantage of reducing the projection lens, thereby improving the optical quality.

[0016] Step 2 of this application explores how to reduce the optical volume of this system. By using the characteristic of the small divergence angle of the laser light source, the light is concentrated at the light-receiving position, effectively reducing the optical étendue of the illumination optical system, so that the volume of the required optical components and the relative distance are also shortened, and the diameter of the required light-receiving lens can also be reduced. And by reducing the aperture, the optical quality is improved, and even the design of the projection lens can be further simplified. Furthermore, the purpose of reducing the volume of the optical system is achieved, and the relatively complete design idea and method improve the performance and the rationality of the structure of the invention.

[0017] Step 3: Establish a zoom shift lens technology system. By developing multiple movable independent lens groups, adjust the magnification of the entire projection lens and achieve the zoom function. The specific steps of Step 3 are as follows: Step 3.1: Create multiple movable independent lens groups to adjust the magnification of the projection lens and achieve the zoom function; Step 3.2: Design an inter-lens control module. By controlling the gap between multiple movable independent lens groups, avoid the excessive cumulative gap from affecting the optical imaging quality.

[0018] Step 4: Develop shift lens technology. By increasing the imaging circle of the projection lens, ensure that good projection quality can be achieved regardless of the position of the display chip. The specific steps of Step 4 are as follows: Step 4.1: Increase the imaging circle of the projection lens to ensure that good projection quality can be achieved regardless of the position of the display chip; Step 4.2: Solve the sensitivity design of the optical system and the structural fixation / reliability design. After matching with the process adjustment mechanism, ensure that the 8K zoom shift lens can be adjusted to the best resolution at different positions and different focal lengths; Step 4.3: Since the linkage lens group of the 8K zoom shift lens requires good relative decentration and the stability of the shift system, a metal lens barrel processed by a digital machine tool will be used. The internal structure of the lens barrel can be processed at one time by the digital machine tool to ensure the best accuracy of the inner side of the lens barrel. The metal lens barrel will also introduce a process of blackening the anti-light surface to ensure that the lens barrel still maintains a good function of eliminating stray light after long-term use.

[0019] Step 5: Solve the problem of balancing shift lens technology and zoom lens technology. Through the process adjustment mechanism, simultaneously achieve the sensitivity design of the optical system and the structural fixation / reliability design.

[0020] Step 6: Achieve the optimal design of angle deviation compensation by developing a galvanometer module with a temperature compensation mechanism and an automated image capture system, and ensure that any product has the best resolution quality at any temperature. The specific steps of Step 6 are as follows: Step 6.1: Introduce a temperature influence mechanism and incorporate it into the galvanometer module as a sub-module of the temperature control circuit; Step 6.2: Use the extinction design of the ceramic surface blackening technology to blacken the protective ceramic surface of the galvanometer module, so that the module surface absorbs light for a long time and reduces the module temperature; Step 6.3: Design a heat energy guide to conduct the temperature outside the system body to avoid the risk of the optical system temperature rising; Step 6.4: Through the temperature / amplitude algorithm system, establish the amplitude curve corresponding to different temperatures to ensure the working quality of the galvanometer module at different temperatures.

[0021] In step 6 of the present invention, a temperature control sub-module is developed for the temperature problems of the system and the chip. The protective ceramic surface of the galvanometer module is blackened by using the extinction design of the ceramic surface blackening technology, so that the module surface absorbs light for a long time, reducing the module temperature.

[0022] Step 7: For the problem of the aging of the optical system caused by the high-intensity laser light source, long-term inspection and verification of the lighting system are carried out. The specific steps of step 7 are as follows: Step 7.1: Joint development and long-term verification of optical materials, coating materials and coating processes are required to ensure stable optical quality during long-term service life. Step 7.2: Record the linear change of the transmittance of each wavelength and draw a graph of the change of each wavelength and transmittance to ensure stable performance of brightness and color. Step 7.3: Test different materials and different fixing structures, select a fully metal fixing structure with less brightness attenuation and a low-volatility surface treatment process, consider the difference in the expansion rate between optical parts and structural parts, and reserve a gap to avoid expansion and rupture.

[0023] Step 8: An 8K laser shift long-focus projection system integrating resolution, brightness, and color gamut is realized by integrating a multi-mirror architecture and beam expansion / beam contraction optical technology, zoom shift lens technology, and optimized angle compensation technology, achieving the integration of multiple technologies.

[0024] In this application, on the 8K laser shift zoom projection technology, a household intelligent projector with the key technology of an 8K zoom shift lens is developed to realize a new 8K display technology with ultra-high definition, ultra-short focus, and extra-large screen.

[0025] Regarding the zoom and shift design of 8K projection, XGIMI already has multiple zoom designs and mass production experience. At 8K resolution, while being compatible with both resolution and zoom, the design is challenging, but it can be quickly developed based on existing experience to solve the situation where the screen position and size of the product cannot be automatically adjusted in application scenarios such as ceiling mounting. In addition, XGIMI already has the ability of long-focus fixed-focus projection vision AI algorithm. Through the selection and adaptation of the image capture module, and through the algorithm calibration and optimization of the large-angle camera module, an automatic calibration function is realized.

[0026] For the auto - focusing technology for 8K projection, since the picture quality and resolution of the screen will deteriorate after being adjusted to different positions, it is necessary to automatically focus again to the clearest state for the convenience of users. XGIMI has completed the independent research and development of an intelligent operating system, including hardware circuit design, overall machine structure design, intelligent perception algorithm development, picture quality optimization algorithm development, AI intelligent system, MEMC motion compensation technology, etc., which automatically corrects the picture resolution and picture quality. After obtaining the clarity of the projected picture through TOF ranging data fitting and image acquisition clarity analysis algorithm, the lens is automatically focused through the stepper motor focal length micro - control algorithm, and the best focus is completed within a few milliseconds, so as to quickly realize the re - focusing of the picture after the machine is bumped, which effectively improves the user experience.

[0027] Regarding the galvanometer automatic camera optimization technology, existing 8K projection technologies are all realized through the combination of galvanometers and DLP (Digital Light Processing) chips. Therefore, breaking through the galvanometer automatic camera optimization technology and optimizing the parameters of the galvanometers is also of great significance. The laboratory has the ability of automatic calibration of basic equipment and mass production, which greatly guarantees the consistency and quality stability of 8K display effects.

[0028] As described above, it is only the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present invention without creative labor should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A technology integration research method based on 8k tilt-shift lens, characterized in that: The following steps are involved: Step 1: Establish a suitable chip design solution, study 8K tilt-shift zoom lens technology and establish a miniaturized 8K projection optical system to reduce the size of its optical system; Step 2: Through the multiple reflector structure and the optical method of beam expansion / concentration, all laser light sources are concentrated in the light collection area of ​​the illumination system. The light divergence angle of the illumination optical system will be greatly reduced, thereby effectively controlling the volume of the optical system; Step 3: Establish a zoom-shift lens technology system, and adjust the magnification of the entire projection lens and realize the zoom function by developing multiple movable independent lens groups; Step 4: Develop tilt-shift lens technology to increase the image circle of the projection lens to ensure good projection quality regardless of the position of the display chip. Step 5: Solve the problem of balancing the tilt-shift lens technology and the zoom lens technology, and use the process adjustment mechanism to achieve both the optical system sensitivity design and the structural fixation / reliability design; Step 6: Develop a galvanometer module with temperature compensation mechanism and an automated image acquisition system to optimize the design of angle deviation compensation and ensure that any product has the best resolution quality at any temperature; Step 7: Carry out long-term inspection and verification of the lighting system to address the aging problem of the optical system caused by high-intensity laser light sources; Step 8: By integrating a multi-mirror architecture with beam expansion / concentration optical technology, zoom-shift lens technology, and optimized angle compensation technology, an 8K laser tilt-shift telephoto projection system that integrates resolution, brightness, and color gamut is realized, realizing the integration of multiple technologies.

2. A technology integration research method based on 8k tilt-shift lens as claimed in claim 1, characterized in that: The specific steps of step 2 are as follows: Step 2.1: Make full use of the small light divergence angle of the laser light source, and use the multi-reflector structure and beam expansion / concentration optical system to concentrate all laser light sources in the light collection area of ​​the illumination system. By using the small divergence angle of the laser light source, the light can be effectively converged to a small area, and the optical etendue of the illumination optical system can be effectively reduced; Step 2.2: The reduction of optical expansion will significantly reduce the light divergence angle of the illumination optical system, and the required optical element volume and relative distance can also be shortened; Step 2.3: Reduce the light angle of the illumination optical system. The light angle that the projection lens needs to receive will also be reduced. At this time, the required light-collecting lens diameter can also be reduced, so that the system has the advantage of reducing the projection lens, thereby improving the optical quality.

3. A technology integration research method based on 8k tilt-shift lens as claimed in claim 1, characterized in that: The specific steps of step 3 are as follows: Step 3.1: Create multiple movable independent mirror groups to adjust the projection lens magnification and realize the zoom function; Step 3.2: Design an inter-mirror control module to control the gaps between multiple movable independent mirror groups to avoid excessive cumulative gaps that affect the optical imaging quality.

4. The technology integration research method based on 8k tilt-shift lens according to claim 1, characterized in that: The specific steps of step 4 are as follows: Step 4.1: Increase the image circle of the projection lens to ensure good projection quality regardless of the position of the display chip; Step 4.2: Solve the optical system sensitivity design and structural fixation / reliability design, and after matching the process adjustment mechanism, ensure that the 8K zoom-shift lens can be adjusted to the optimal resolution at different positions and focal lengths; Step 4.3: Since the 8K zoom tilt-shift lens linkage group needs to have good relative eccentricity and stability of the tilt-shift system, a metal lens barrel processed by a digital machine tool will be used. The internal structure of the lens barrel can be processed at one time using a digital machine tool to ensure that the inner side of the lens barrel has the best precision. The metal lens barrel will also be introduced into the anti-light surface blackening process to ensure that the lens barrel can maintain a good stray light elimination function after long-term use.

5. The technology integration research method based on 8K tilt-shift lens according to claim 1, characterized in that: The specific steps of step 6 are as follows: Step 6.1: Introduce the temperature influence mechanism and integrate it into the galvanometer module as a temperature control circuit submodule; Step 6.2: Use the matte design of ceramic surface blackening technology to dye the protective ceramic surface of the galvanometer module black, so that the module surface absorbs light for a long time and reduces the module temperature; Step 6.3: Design heat conduction to transfer the temperature outside the system body to avoid the risk of temperature rise in the optical system.

6. The technology integration research method based on 8K tilt-shift lens according to claim 1, characterized in that: The specific steps of step 7 are as follows: Step 7.1: Optical materials, coating materials and coating processes need to be jointly developed and verified over a long period of time to ensure that stable optical quality can be maintained during the long service life; Step 7.2: Record the linear change of transmittance at each wavelength and draw a graph of the change of each wavelength and transmittance to ensure that both brightness and color are stable; Step 7.3: Test different materials and different fixing structures, select the all-metal fixing structure with less brightness attenuation and the low-volatile surface treatment process, consider the difference in expansion rate between optical parts and structural parts, and reserve gaps to avoid expansion and cracking.

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