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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1 WO2020007359A1
SCAN DRIVER AND OPTICAL FIBER SCAN DRIVER
Publication/Patent Number: WO2020007359A1 Publication Date: 2020-01-09 Application Number: 2019094860 Filing Date: 2019-07-05 Inventor: Yao, Changcheng   Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: A scan driver and an optical fiber scan driver, the scan driver comprising a first actuating part (1) and second actuating part (3) that are integrally formed and that are connected in sequence from back to front; the first actuating part (1) and the second actuating part (3) both comprise a piezoelectric material main body having a piezoelectric effect, internal electrode holes are disposed at the interior of the first actuating part (1) and the second actuating part (3), and external electrodes (12, 32) are disposed at the exterior of the first actuating part (1) and the second actuating part (3), the internal electrode holes of the first actuating part (1) and the second actuating part (3) being provided with internal electrodes (601, 602) which cooperate with the external electrodes (12, 32). The integrally formed structure avoids subsequent processes such as assembly, alignment and debugging of a scanner, thus reducing complexity and improving manufacturing efficiency, therefore difficulty during manufacturing may be greatly reduced and the reliability of a device may be improved; meanwhile, disassembly and disintegration may be prevented to increase overall reliability and durability.
2 WO2020007324A1
PIEZOELECTRIC DRIVER, OPTICAL FIBER SCANNING MODULE AND PROJECTION DEVICE
Publication/Patent Number: WO2020007324A1 Publication Date: 2020-01-09 Application Number: 2019094580 Filing Date: 2019-07-03 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: H02N2/00 Abstract: A piezoelectric driver, an optical fiber scanning module and a projection device. The piezoelectric driver includes a piezoelectric body and electrodes, wherein the piezoelectric body is made of a polarized piezoelectric material. Some of the electrodes or all of the electrodes are disposed separately from the piezoelectric body, and the electrodes disposed separately from the piezoelectric body are movably disposed around the piezoelectric body, thereby realizing a change in the direction of a driving force by means of the separately disposed electrodes, realizing compensation for the scanner response, being more flexible and convenient, and improving the imaging quality. In addition, multi-dimensional scanning can also be achieved by means of a pair of electrodes.
3 WO2020007358A1
OPTICAL FIBER SCANNER MANUFACTURING METHOD
Publication/Patent Number: WO2020007358A1 Publication Date: 2020-01-09 Application Number: 2019094859 Filing Date: 2019-07-05 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: An optical fiber scanner manufacturing method, used to resolve the technical issue that poor stability of an optical fiber (10) in an optical fiber scanner results in poor performance of the optical fiber scanner. The manufacturing method comprises: in an extension direction of an optical fiber (10), coating a conductive coating (20) on the optical fiber (10) to serve as an inner electrode (20) corresponding to a piezoelectric cantilever of an optical fiber scanner (S11); in the extension direction of the optical fiber (10), wrapping a ceramic layer (30) around the optical fiber (10) coated with the conductive coating (20) (S12); coating a conductive coating on a designated region of the ceramic layer (30) in the extension direction to serve as an outer electrode (40) (S13); and applying voltage to the outer electrode (40) and the inner electrode (20), and polarizing part or all of the ceramic layer (30) (S14).
4 WO2020007360A1
WAVEGUIDE-BASED DISPLAY MODULE, AND IMAGE GENERATION MODULE AND APPLICATION THEREOF
Publication/Patent Number: WO2020007360A1 Publication Date: 2020-01-09 Application Number: 2019094861 Filing Date: 2019-07-05 Inventor: Yao, Changcheng   Song, Haitao   Zhou, Xudong   Wang, Jiazhou   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: Disclosed are a waveguide-based display module, and an image generation module and application corresponding thereto. Based on the principle of wavelength division multiplexing, an image generation unit modulates a mixed light beam that includes at least two groups of sub-images of different wavelengths. The mixed light beam modulated by the image generation unit is coupled into a waveguide module, which module has multiple layers of coupling-in units and multiple layers of coupling-out units, wherein each layer of coupling-in units is configured to couple in light of different wavelength ranges; and emitted images, which are formed by the coupling-out unit of the waveguide module coupling out a mixed light beam of an image to be displayed that is generated by the image generation unit, are spliced into the image to be displayed. The present invention solves the problem of taking both a large field of view and the miniaturization of a near-eye display module into consideration by means of a new idea.
5 WO2020020000A1
LASER SCANNING PROJECTION DEVICE, APPARATUS, AND DETECTION METHOD
Publication/Patent Number: WO2020020000A1 Publication Date: 2020-01-30 Application Number: 2019095779 Filing Date: 2019-07-12 Inventor: Zhou, Xudong   Yu, Xiuying   Chang, Hanqing   Assignee: Chengdu idealsee technology co ltd   IPC: G03B21/00 Abstract: A laser scanning projection device, an apparatus, and a detection method, for addressing the technical problem in which a scanning imaging system provides poor safety during a laser scanning projection process. The laser scanning projection device comprises: a light source (10) comprising an imaging light source for emitting imaging light and a detection light source for emitting detection light, the detection light and the imaging light corresponding to difference bands or wavelengths; a scanner (20) for receiving the imaging light and the detection light that have been combined into a beam and output by the light source, and accordingly scanning and emitting collimated scanning light; a light processor (30) located in a light emission path of the scanner (20) and configured to split the scanning light emitted by the scanner (20) or to receive light reflected when the scanning light is projected to a projection carrier; a light detector (40) for detecting the detection light that has passed through the light processor (30), and generating and outputting an electrical signal corresponding to the detected detection light; and a controller (50) connected to the light detector (40) and configured to receive the electrical signal, determining, according to the value of the electrical signal, whether the scanner (20) is operating abnormally, and if the scanner (20) is determined to be operating abnormally, controlling light transmitted by the scanner (20).
6 US2020271922A1
PROJECTION DEVICE AND SPATIAL IMAGING METHOD
Publication/Patent Number: US2020271922A1 Publication Date: 2020-08-27 Application Number: 16/492,846 Filing Date: 2018-03-19 Inventor: Huang, Qinhua   Song, Haitao   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: Disclosed are a projection device and a spatial imaging method. The projection device includes: an optical fiber scanner array; a light source located on an incident light path of the optical fiber scanner array; and an adjustment and control module assembly configured to couple, according to a virtual scene to be displayed, light emitted by the light source into the optical fiber scanner array, and to control the optical fiber scanner array to project pencil beams to a plurality of virtual object points corresponding to the virtual scene and located in space, such that multiple pencil beams projected to each virtual object point form a bundle of emitting light beams.
7 WO2019228238A1
LASER SCANNING IMAGING DEVICE
Publication/Patent Number: WO2019228238A1 Publication Date: 2019-12-05 Application Number: 2019087950 Filing Date: 2019-05-22 Inventor: Song, Haitao   Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G01S17/89 Abstract: A laser scanning imaging device, comprising a processor (201) and a laser scanning imaging apparatus (202). A light source (2021) comprises two sets of lasers, each set of lasers comprising three lasers that emit light of three different colors respectively. Two lasers emitting light of the same color in the two sets of lasers correspond to one color channel of each pixel in an image to be scanned. During the process of scanning a plurality of consecutive pixels in the image to be scanned, a range of gray-scale values of at least one color channel of the plurality of pixels is within a predetermined range, and the processor controls one laser of two lasers corresponding to a color channel that meets a condition to continuously emit light of a first gray-scale value, and controls the other laser to emit light of the difference between a gray-scale value of a current pixel and the first gray-scale value, thereby avoiding the high frequency modulation of the laser that continuously emits the light of the first gray-scale value, and further lowering the requirement for the responsiveness of the laser.
8 WO2019184611A1
NEAR-EYE DISPLAY SYSTEM
Publication/Patent Number: WO2019184611A1 Publication Date: 2019-10-03 Application Number: 2019075057 Filing Date: 2019-02-14 Inventor: Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G02B27/01 Abstract: A near-eye display system, comprising an image source (1) and an imaging lens group (2), wherein the image source (1) is used for emitting an image to be displayed; the imaging lens group (2) comprises at least two imaging components (3) sequentially disposed along an emergent light path of the image source (1); the imaging components (3) all reflect or diffract light beams emitted by the image source (1); apart from the imaging component (3) located on the rearmost side of the light path, the reflectivity or the diffraction efficiency of the other imaging components (3) is less than 100%; each of the imaging components (3) forms an image on a viewing area by means of reflection or diffraction; and viewing areas of the imaging components (3) are located on the same plane and do not overlap each other. Therefore, when the pupils of a wearer are in different positions, the wearer can observe an image emitted by the image source (1). The system has strong universality, and there is no need for individual customization according to an individual wearer, thus improving the universality of the display system and overcoming the defects of existing near-eye display systems.
9 WO2019157987A1
MONOCULAR LARGE FIELD-OF-VIEW NEAR-EYE DISPLAY DEVICE AND BINOCULAR LARGE FIELD-OF-VIEW NEAR-EYE DISPLAY DEVICE
Publication/Patent Number: WO2019157987A1 Publication Date: 2019-08-22 Application Number: 2019074428 Filing Date: 2019-02-01 Inventor: Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G02B27/01 Abstract: A monocular large field-of-view near-eye display device, comprising at least two image source display systems (1), eyepiece optical systems (2) provided in a one-to-one correspondence to the image source display systems (1), and a near-eye display optical system (3). Image lights emitted by the image source display systems (1) are processed by the corresponding eyepiece optical systems (2) and then shone into the near-eye display optical system (3). The image lights are emitted by the near-eye display optical system (3) and then shone into either eye of an observer. Images formed by the image lights of the image source display systems (1) when emitted by the near-eye display optical system (3) are tiled with each other to form one complete image. Hence, each of the image source display systems (1) is respectively used for displaying a partial image of one entire image, and multiple partial images are ultimately tiled to constitute a complete overall image, thus increasing the monocular field-of-view of the device.
10 WO2019157986A1
MONOCULAR LARGE-VIEW-FIELD NEAR-EYE DISPLAY MODULE, DISPLAY METHOD AND HEAD-MOUNTED DISPLAY APPARATUS
Publication/Patent Number: WO2019157986A1 Publication Date: 2019-08-22 Application Number: 2019074427 Filing Date: 2019-02-01 Inventor: Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G02B27/01 Abstract: Provided is a monocular large-view-field near-eye display module, comprising at least two image sources (11), an ocular optical device (12) and a flat optical waveguide (13), wherein images emitted by the image sources (11) are different parts which form a complete image with a corresponding large field angle; and the flat optical waveguide (13) is provided with an input coupler (131), a relay component (132) and an output coupler (133) which are arranged in a one-to-one correspondence with the ocular optical device (12); and images, which are diffracted or reflected outwards by each output coupler (133) and have corresponding sub-field angles, are spliced with each other to form a complete image with a corresponding large visual angle. The large field angle of the complete image is obtained by combining the sub-field angles corresponding to the images which are diffracted or reflected outwards by each output coupler (133), and the complete image corresponds to a complete image which has a corresponding large field angle and is formed by the sub-images emitted by the various image sources (11).
11 WO2019154117A1
OPTICAL FIBER SCANNER, OPTICAL FIBER SCANNING DEVICE AND OPTICAL FIBER SCANNING APPARATUS
Publication/Patent Number: WO2019154117A1 Publication Date: 2019-08-15 Application Number: 2019073137 Filing Date: 2019-01-25 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: Disclosed in the present invention are an optical fiber scanner, an optical fiber scanning device and an optical fiber scanning apparatus. The optical fiber scanner comprises a slow-axis driving unit, a connector and N fast-axis driving units. The connector has a slow-axis connecting structure and N fast-axis connecting structures. The slow-axis driving unit is connected to the N fast axis driving units by means of the connector, N being an integer greater than or equal to 2. Since one slow-axis driving unit is connected to N fast-axis driving units by means of a connector, that is, one slow-axis driving unit can drive N fast-axis driving units simultaneously. In this way, the N fast-axis driving units can move synchronously in the vibration direction of the slow-axis driving unit, thereby achieving the technical effect of outputting high quality image.
12 WO2019174537A1
IMAGE CORRECTION METHOD AND OPTICAL FIBER SCANNING IMAGING DEVICE
Publication/Patent Number: WO2019174537A1 Publication Date: 2019-09-19 Application Number: 2019077606 Filing Date: 2019-03-11 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: Disclosed are an image correction method and an optical fiber scanning imaging device. The method comprises: detecting a scanning track, driven by a first driving signal, of an optical fiber scanner in a first direction; determining whether the scanning track is in the first direction; if not, calculating a displacement response component of the scanning track in a second direction; and calculating a correction driving signal in the second direction based on the displacement response component, and driving the optical fiber scanner based on the first driving signal and the correction driving signal, so as to generate a displacement opposite to the displacement response component in the second direction, so that the scanning track of the optical fiber scanner is in the first direction. The method is used for solving the technical problem existing in the prior art that distortion occurs in an imaging area when an XY-type laser scanning imaging device is used for projection.
13 US10334235B2
Binocular see-through AR head-mounted display device and information display method therefor
Publication/Patent Number: US10334235B2 Publication Date: 2019-06-25 Application Number: 15/545,328 Filing Date: 2015-08-07 Inventor: Liu, Yinqiu   Huang, Qinhua   Liu, Yang   Li, Xinyu   Song, Haitao   Assignee: Chengdu idealsee technology co ltd   IPC: G09G5/00 Abstract: A binocular see-through AR head-mounted display device is disclosed. Based on that the mapping relationships fc→s and fd→i are pre-stored in the head-mounted device, the position of the target object in the camera image is obtained through an image tracking method, and is mapped to the screen coordinate system of the head-mounted device for calculating the left/right image display position. Through a monocular distance finding method, the distance between the target object and the camera is real-time calculated referring to the imaging scale of the camera, so as to calculate a left-right image distance, thereby calculating the right or the right image display position. Correspondingly, the present invention also provides an information display method for a binocular see-through AR head-mounted display device and an augmented reality information display system. The present invention is highly reliable with low cost.
14 US10284839B2
Binocular see-through AR head-mounted display device and information display method therefor
Publication/Patent Number: US10284839B2 Publication Date: 2019-05-07 Application Number: 15/545,327 Filing Date: 2015-08-07 Inventor: Liu, Yinqiu   Li, Xinyu   Assignee: Chengdu idealsee technology co ltd   IPC: G09G5/00 Abstract: A binocular see-through AR head-mounted display device and an information display method therefor are disclosed. The present invention uses the scene depth image and the user stared point to calculate the position of the target object stared by the user and maps coordinates to the screen coordinate system to determine the overlapping position of AR information. In addition, the present invention can tolerate small changes of human eye sight, and the AR information can be stably stacked in the same position with good robustness. The present invention can distinguish the target object stared by the user from the background, and when the user eye sight is put on different parts of the target object, the AR information is still superimposed at the same position without frequent movement with changes of the eye sight.
15 WO2019218895A1
FEATURE EXTRACTION METHOD AND SYSTEM FOR DEEP LEARNING
Publication/Patent Number: WO2019218895A1 Publication Date: 2019-11-21 Application Number: 2019085836 Filing Date: 2019-05-07 Inventor: Yan, Chao   Song, Haitao   Zhou, Xudong   Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G06N3/067 Abstract: A feature extraction method for deep learning comprises: converting, by means of a display technology, a digital signal to undergo feature extraction into spatial image information to undergo feature extraction; converting, by means of an optical Fourier transform device, the spatial image information to undergo feature extraction into spectral image information to undergo feature extraction; and inputting the spectral image information to undergo feature extraction into a corresponding optical filter to obtain feature-extracted spectral image information. The method and the feature extraction system thereof convert time-domain convolution in the prior art into a frequency-domain dot product, thereby effectively reducing the amount of deep learning computation. An optical device having the same effect as a Fourier transform lens is used in the Fourier transform process, and therefore the transformation rate is the speed of light, thereby greatly reducing time consumed for the Fourier transform. Further, a spectrum dot product operation is realized through an optical solution, and the speed of the dot product operation is also the speed of light, thereby greatly reducing time consumed in obtaining the spectrum dot product.
16 WO2019228239A1
LASER SCANNING IMAGING DEVICE
Publication/Patent Number: WO2019228239A1 Publication Date: 2019-12-05 Application Number: 2019087951 Filing Date: 2019-05-22 Inventor: Song, Haitao   Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: H04N9/31 Abstract: Disclosed in the present invention is a laser scanning imaging device, comprising a processor and a laser scanning imaging apparatus. The laser scanning imaging apparatus comprises a light source and a scanner, light emitted by the light source is composed of different colors of light emitted by three lasers, and the three lasers are in one-to-one correspondence with three color channels of each pixel in an image to be scanned. During the process of scanning two adjacent pixels in the image to be scanned, when numerical values of at least one color channel of the two adjacent pixels are the same, the processor controls a laser corresponding to the color channel having the same numerical value to continuously emit light. By means of the present invention, the modulation frequency of a circuit and the lasers is reduced, the reliability of the entire laser scanning imaging device is improved, and the service life of the laser scanning imaging device is increased.
17 WO2019184624A1
METHOD FOR CORRECTING IMAGE DISTORTION DURING OPTICAL FIBER SCANNING, AND OPTICAL FIBER SCANNER
Publication/Patent Number: WO2019184624A1 Publication Date: 2019-10-03 Application Number: 2019075483 Filing Date: 2019-02-19 Inventor: Yao, Changcheng   Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G02B26/10 Abstract: Disclosed is a method for correcting image distortion during optical fiber scanning. The optical fiber scanning is raster scanning comprising: a fast-axis driver (2) driving an optical fiber (1) to vibrate in an X direction, and a slow-axis driver (3) driving the optical fiber to vibrate in a Y direction that is perpendicular to the X direction. A response in the Y direction is superposed on the fast-axis driver or the slow-axis driver, such that the response in the Y direction caused by the fast-axis driving is offset by the response superposed in the Y direction. By introducing an equal quantity reverse to that of the response in the Y direction caused by the fast-axis driving, the offset effect is generated to offset an out-of-plane response in a fast axis, so that the response in the fast axis is a horizontal straight line. At this point, an area in which the image is displayed is a regular rectangle, namely, the out-of-plane response is corrected. Therefore, accurate control of a scanning trace is realized, and the display resolution and performance of a scanned image are improved. Further disclosed is an optical fiber scanner.
18 WO2019052498A1
OPTICAL FIBER SCANNING-BASED IMAGING SYSTEM, AS WELL AS OPTICAL FIBER SCANNING-BASED IMAGING DEVICE AND DISTORTION DETECTION AND CORRECTION SYSTEM THEREOF
Publication/Patent Number: WO2019052498A1 Publication Date: 2019-03-21 Application Number: 2018105413 Filing Date: 2018-09-13 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: G03B21/00 Abstract: An optical fiber scanning-based imaging system, comprising a light source, a scanning optical fiber, a controller, and an optical amplification component. A scanning duration corresponding to each effective scanning pixel is stored in the controller, and the scanning durations corresponding to the effective scanning pixels are non-uniformly distributed. The controller is connected to a scanning driver of the scanning optical fiber and the light source for controlling, according to the scanning durations corresponding to the effective scanning pixels stored in the controller, the light source to emit light and the scanning optical fiber to perform scanning. The optical amplification component is disposed at an exit end of the scanning optical fiber. Also provided are a corresponding optical fiber scanning-based imaging device, and a distortion detection and correction system of the optical fiber scanning-based imaging device. According to the invention, an image source is pre-corrected by means of a modulation algorithm to compensate for distortion of an optical lens; compared with a conventional optical mode for solving distortion of an optical amplification system, the present invention can effectively reduce the burden of an optical system.
19 WO2019120142A1
MONOCHROMATIC LASER LIGHT SOURCE, COLOR LASER LIGHT SOURCE, AND LASER PROJECTION DEVICE
Publication/Patent Number: WO2019120142A1 Publication Date: 2019-06-27 Application Number: 2018121236 Filing Date: 2018-12-14 Inventor: Yao, Changcheng   Song, Haitao   Zhou, Xudong   Assignee: Chengdu idealsee technology co ltd   IPC: G03B21/20 Abstract: A monochromatic laser light source, a color laser light source, and a laser projection device. The monochromatic laser light source comprises N lasers (101), N being an integer greater than or equal to 2, and each laser (101) outputting rays in the same color and with all gray scale values as constant values smaller than M; N ray beams output by the N lasers (101) are combined as one ray beam, and the monochromatic laser light source can output rays with any gray scale value from 0 to M by controlling whether each laser (101) outputs rays. Interference images respectively generated by the laser rays emitted from the N lasers (101) are different, and it would not be possible to form a stable single interference pattern, so that the laser speckle effect is greatly improved and the imaging quality is improved. In addition, the lasers (101) are prevented from high frequency modulation by means of high frequency change of a driving current, so that the gray scale values of the rays output by the monochromatic laser light source are easy to be controlled accurately.
20 WO2019114500A1
OPTICAL FIBER SCANNING IMAGING DEVICE AND CORRECTION SYSTEM FOR PROJECTION GEOMETRIC DISTORTION OF SAME
Publication/Patent Number: WO2019114500A1 Publication Date: 2019-06-20 Application Number: 2018116202 Filing Date: 2018-11-19 Inventor: Yao, Changcheng   Assignee: Chengdu idealsee technology co ltd   IPC: H04N9/31 Abstract: Disclosed are an optical fiber scanning imaging device and a correction system for projection geometric distortion of same. The correction system comprises a test image outputter, an image collector, and a processor, wherein: the test image outputter is used for outputting a predetermined rectangular test image to the optical fiber scanning imaging device; the image collector is used for collecting a projection image output from the optical fiber scanning imaging device; a computer program stored in the processor executes a series of image and signal processing according to data from the test image outputter and the image collector, so as to correct the tilted and distorted projection image as the horizontal rectangular image. The technical problem in the prior art that an XY-type laser scanning imaging device causes a tilted image during projection can be effectively solved.