Patents Examined by Stephone B. Allen
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Patent number: 11927770Abstract: A tunable filter includes: an optical input/output unit; a first mirror having a first reflective surface disposed to reflect input light from the optical input/output unit; a transmissive diffraction grating disposed on a propagation path of the input light reflected by the first mirror; and a second mirror having a second reflective surface disposed to reflect transmitted diffracted light from the transmissive diffraction grating corresponding to the input light. The first reflective surface is a variable-angle reflective surface. The second reflective surface has a fixed orientation relative to the transmissive diffraction grating.Type: GrantFiled: January 12, 2021Date of Patent: March 12, 2024Assignee: santec Holdings CorporationInventor: Yasuki Sakurai
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Patent number: 11927783Abstract: Optical films, such as reflective polarizer films, and optical systems including the optical films are described. An optical system includes one or more optical lenses having at least one curved major surface, a partial reflector, and a reflective polarizer. For a substantially normally incident light in a predetermined wavelength range extending at least from about 450 nm to about 600 nm: the partial reflector has an average optical reflectance of at least 30%, and the reflective polarizer has an average optical reflectance Rs for a first polarization state, an average optical transmittance Tp for an orthogonal second polarization state, and an average optical reflectance Rp for the second polarization state, where Tp?80%, Rp?1%, and 50%?Rs?95%.Type: GrantFiled: July 11, 2019Date of Patent: March 12, 2024Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: John D. Le, Zhisheng Yun, Timothy L. Wong, Timothy J. Nevitt, Adam D. Haag, Arthur L. Kotz
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Patent number: 11914179Abstract: This disclosure discloses a radiative cooling optical filter, comprising a substrate. One side of the substrate is polished, and the rough side of the substrate is provided with a metal reflective layer. The polished side of the substrate is subsequently provided with the intermediate layers and a top layer. The intermediate layer comprises alternatingly arranged layers A and layers B. The thickness of each layer A and layer B is 50-400 nm. The material of the layer A is silicon dioxide or aluminum oxide, and the material of the layer B is titanium dioxide, silicon nitride or silicon carbide. The material of the top layer is ytterbium fluoride, yttrium fluoride or zinc sulfide. The intermediate layer and the top layer jointly constitute a multi-resonant absorption enhancer in the atmospheric transparent window.Type: GrantFiled: January 18, 2019Date of Patent: February 27, 2024Assignee: ZHEJIANG UNIVERSITYInventors: Weidong Shen, Huaxin Yuan, Chenying Yang, Xiaowen Zheng, Wen Mu, Zhen Wang, Wenjia Yuan, Yueguang Zhang
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Patent number: 11914177Abstract: Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm:120 W/m2) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: NITTO DENKO CORPORATIONInventors: Masato Katsuda, Yudai Numata, Shoichi Matsuda
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Patent number: 11914176Abstract: This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85° C.Type: GrantFiled: March 15, 2021Date of Patent: February 27, 2024Assignee: NITTO DENKO CORPORATIONInventors: Yudai Numata, Masato Katsuda, Shoichi Matsuda
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Patent number: 11906810Abstract: An optical element driving mechanism is provided. The optical element driving mechanism is disposed on an electronic apparatus. The optical element driving mechanism includes a first movable portion, a fixed portion, a first driving assembly, a circuit assembly, and a first position sensing assembly. The first movable portion is used for connecting to a first optical element. The first optical element is used for corresponding to light. The first movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the first movable portion to move relative to the fixed portion. The circuit assembly is used for electrically connected to the electronic apparatus. The first position sensing assembly is used for detecting the movement of the first movable portion relative to the fixed portion.Type: GrantFiled: March 5, 2021Date of Patent: February 20, 2024Assignee: TDK TAIWAN CORP.Inventors: Ying-Jen Wang, Ya-Hsiu Wu, Chen-Chi Kuo, Chao-Chang Hu, Yi-Ho Chen, Che-Wei Chang, Ko-Lun Chao, Sin-Jhong Song
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Patent number: 11906718Abstract: The invention provides a wide-aperture spherical primary mirror off-axis afocal optical system, including a primary mirror, a secondary mirror and an aberration compensation mirror group. The primary mirror is a spherical reflector, the secondary mirror are higher-order aspherical reflectors. The primary mirror and the secondary mirror form an off-axis two-mirror system to compress the beam aperture. The aberration compensation mirror group is a coaxial reflective system that is used off-axis. The aberration compensation mirror group has focal power to produce compensation aberrations. The incident beam passes through and is reflected by the primary mirror and secondary mirror sequentially and enters the aberration compensation mirror group thereafter.Type: GrantFiled: March 18, 2022Date of Patent: February 20, 2024Assignee: SOOCHOW UNIVERSITYInventors: Xinhua Chen, Yueping Lu, Zhicheng Zhao, Qiao Pan, Weimin Shen
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Patent number: 11899270Abstract: A voice coil motor device includes a fixed component and a movable component. The movable component holds a lens. The movable component is accommodated in the fixed component. The fixed component includes a housing and a base. The housing defines a first hole and includes first side walls. The base defines a second hole. Centers of the first hole and the second hole are on an optical axis. The movable component is accommodated in the housing. The first hole receives the lens. One end of the movable component is received in the second hole of the base. The first side walls of the housing define a plurality of positioning holes, and the base includes a plurality of positioning posts. Each of the positioning posts is embedded in a corresponding one of the positioning holes.Type: GrantFiled: March 22, 2021Date of Patent: February 13, 2024Assignee: TRIPLE WIN TECHNOLOGY(SHENZHEN) CO.LTD.Inventors: Shin-Wen Chen, Sheng-Jie Ding, Jing-Wei Li, Jian-Chao Song
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Patent number: 11899274Abstract: An optical element driving mechanism is provided and includes a fixed assembly, a first movable assembly and a first driving assembly. The first movable assembly is configured to connect a first optical element, and the first movable assembly is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension.Type: GrantFiled: August 19, 2021Date of Patent: February 13, 2024Assignee: TDK TAIWAN CORP.Inventors: Chao-Chang Hu, Chen-Hsien Fan, Chih-Wen Chiang, Chien-Yu Kao
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Patent number: 11899187Abstract: There is provided a compact imaging lens configured to properly correct aberrations. The imaging lens includes, in order from an object side to an image side, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, a third lens L3 with positive refractive power, a fourth lens L4 with positive refractive power, a fifth lens L5, a sixth lens L6, a seventh lens L7 with positive refractive power, and an eighth lens L8 with negative refractive power. The eighth lens L8 is formed in a shape of a meniscus lens in a paraxial region, and has an aspheric image-side surface having at least one inflection point. In addition, the following conditional expressions are satisfied: ?5.00<f2/f<?2.00 10.00<f4/f<25.00 where f: a focal length of the overall optical system of the imaging lens, f2: a focal length of the second lens, and f4: a focal length of the fourth lens.Type: GrantFiled: August 2, 2021Date of Patent: February 13, 2024Assignee: TOKYO VISIONARY OPTICS CO., LTD.Inventor: Hitoshi Hirano
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Patent number: 11892803Abstract: A holographic image display system comprising a processor receiving image data at an input and producing output hologram data based on the image data. The image data comprises three-dimensional image data that is separable into a plurality of two-dimensional image layers at different image planes. The processor is configured to: a) perform a space-frequency transform on each image layer to provide a transformed image layer, b) apply a focus factor to each transformed image layer, c) apply a pseudo-random phase factor to each transformed image layer, and d) sum the transformed image layers to form a holographic sub-frame, e) repeat steps (c) and (d) for a plurality of iterations, applying a different pseudo-random phase factor to the transformed image layers in each iteration to form a plurality of holographic sub-frames; and f) drive a spatial light modulator with the holographic sub-frames in rapid temporal succession to generate a holographic image.Type: GrantFiled: July 6, 2021Date of Patent: February 6, 2024Assignee: VividQ LimitedInventor: Andrzej Kaczorowski
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Patent number: 11892605Abstract: A camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens having a positive refractive power and a sixth lens having a negative refractive power. The camera optical lens satisfies following conditions: 0.25?d10/TTL?0.50 and 0.55?f1/f?1.00, here f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d10 denotes an on-axis thickness from an image-side surface of the fifth lens to an object-side surface of the sixth lens, and TTL denotes a total optical length from an object-side surface of the first lens to an image surface of the camera optical lens along an optical axis. The camera optical lens has excellent optical performances such as a large aperture, a wide angle and ultra-thin etc..Type: GrantFiled: December 30, 2020Date of Patent: February 6, 2024Assignee: AAC Optics (Suzhou) Co., Ltd.Inventor: Rongbao Shi
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Patent number: 11886032Abstract: A camera driving module includes: a base including a central opening; a casing disposed on the base and including an opening hole corresponding to the central opening; a lens unit movably disposed on the casing; and a focus driving part. The focus driving part includes a carrier, an AF coil element, at least two permanent magnets and a Hall element. The carrier is disposed on the lens unit and movable in a direction parallel to an optical axis. The AF coil element is fixed to the base and faces toward the carrier. The permanent magnets are fixed on one side of the carrier facing toward the base and disposed opposite to each other about the optical axis. The Hall element faces toward a corresponding surface of one of the permanent magnets. The AF coil element and the corresponding surfaces are arranged in the direction parallel to the optical axis.Type: GrantFiled: July 26, 2022Date of Patent: January 30, 2024Assignee: LARGAN DIGITAL CO., LTD.Inventors: Te-Sheng Tseng, Ming-Ta Chou, Wen-Hung Hsu
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Patent number: 11885935Abstract: The present disclosure provides a camera optical lens including, from an object side to an image side in sequence: eight lenses which are, from an object side to an image side in sequence: a first lens having a positive refractive power, a second having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens having a positive refractive power, a sixth lens having a positive refractive power, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power; and the camera optical lens satisfies conditions of: 0.95?f/TTL; 2.00?f2/f?5.00; and 2.50?(R15+R16)/(R15?R16)?15.00. The camera optical lens can achieve good optical performance while meeting the design requirements for ultra-thinness and long focal length.Type: GrantFiled: December 30, 2020Date of Patent: January 30, 2024Assignee: Raytech Optical (Changzhou) Co., Ltd.Inventor: Jia Chen
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Patent number: 11885990Abstract: An apparatus which includes an ultraviolet laser and at least one reflective mirror having a substrate which is made from beryllium, an aluminum metal matrix, or silicon carbide. The at least one mirror is adapted to reflect a laser beam generated from the ultraviolet laser, which can then be used on a silicon film used in the production of an electronic display. The laser beam can be used to anneal the silicon film, or in a laser lift-off process for separating the silicon film from a temporary substrate upon which the silicon film was mounted.Type: GrantFiled: August 23, 2019Date of Patent: January 30, 2024Assignee: Materion CorporationInventors: Ki-Sung Song, Hunho Lee, Edgar E. Vidal, Kyung H. Chung, Jason R. Clune
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Patent number: 11880127Abstract: A lens drive device is provided with: a lens holder for holding a lens; an ultrasonic motor configured to move the lens holder in a direction of an optical axis; and a support part configured to support the lens holder in a state where the lens holder is urged in a direction orthogonal to the optical axis and such that the lens holder is capable of moving in the direction of the optical axis. The support part includes two pairs of support portions which are disposed respectively on two straight lines along an urging direction and parallel to each other such that the support portions of each pair holds the lend holder therebetween.Type: GrantFiled: October 30, 2020Date of Patent: January 23, 2024Assignee: Mitsumi Electric Co., Ltd.Inventor: Masayoshi Sugawara
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Patent number: 11880048Abstract: An imaging lens assembly includes five lens elements, which are, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element has positive refractive power. The second lens element has positive refractive power. The fourth lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, wherein the two surfaces of the fourth lens element are both aspheric. The fifth lens element having an image-side surface being concave in a paraxial region thereof, wherein two surfaces of the fifth lens element are both aspheric, and the image-side surface of the fifth lens element includes at least one convex critical point in an off-axis region thereof.Type: GrantFiled: August 30, 2022Date of Patent: January 23, 2024Assignee: LARGAN PRECISION CO., LTD.Inventors: Po-Lun Hsu, Wei-Yu Chen
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Patent number: 11877473Abstract: The present invention relates to an optical laminate capable of providing a display panel in which worsening of visibility owing to reflected colors is suppressed. Furthermore, the present invention provides a display panel including the aforementioned optical laminate; a display device including the foregoing optical laminate; and an antireflection layer, a circular polarizing plate, a retardation plate, and a polarizing plate, each of which is used for the aforementioned display panel. The optical laminate includes a circular polarizing plate having a retardation plate and a polarizer, and an antireflection layer having a surface reflectance of 2% or less, wherein the antireflection layer is provided on the polarizer side of the circular polarizing plate; and L* of light incident from the antireflection layer side in the SCI mode is 20 or less, and a saturation is 20 or less.Type: GrantFiled: December 18, 2018Date of Patent: January 16, 2024Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Kenji Fujita, Takashi Kuroda
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Patent number: 11874520Abstract: An optical element driving mechanism is provided, including a base, a holder movably coupled to the base for holding an optical element, a casing, a frame, a driving assembly, and an adhering member. The casing has a top wall and a plurality of side walls extending from the edge of the top wall along an optical axis of the optical element, and the top wall is closer to a light-incident end than the base. The frame is disposed on the top wall and has a frame protrusion extending toward the base. The driving assembly is configured to drive the holder to move relative to the base, and an accommodating space is formed between the base, the frame and the casing. The adhering member is disposed in the accommodating space and configured to directly adhere to the base, the frame, the casing, and the driving assembly.Type: GrantFiled: March 21, 2022Date of Patent: January 16, 2024Assignee: TDK TAIWAN CORP.Inventors: Fu-Yuan Wu, Kun-Shih Lin, Yu-Huai Liao, Yu-Cheng Lin, Yen-Cheng Chen
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Patent number: 11874631Abstract: A method of holographic projection includes projecting at least one calibration image.Type: GrantFiled: December 11, 2020Date of Patent: January 16, 2024Assignee: Envisics LtdInventors: Jamieson Christmas, Michal Wengierow