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公开(公告)号：US09448415B2
公开(公告)日：2016-09-20
申请号：US14631513
申请日：2015-02-25
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu
CPC classification number: G02B27/285 , G02B3/0006 , G02B5/3083 , G03B21/2033 , G03B21/2073
Abstract: An image projector includes a spatially-interleaved polarization converter having an input and output lenslet array, and may transmit light thereon as converted linearly-polarized light. The image projector also includes a lens unit and a projector assembly having a pixel array and being capable of reflecting the converted light. The output lenslet array, the lens unit, and the projector assembly form an imaging system that images the input lenslet array to a top surface of the pixel array. A method for converting light to an output light beam having a single common polarization state includes transmitting the light as a plurality of beamlets each having an s-polarized component and a p-polarized component, splitting each beamlet into a transmitted p-polarized beamlet and a reflected s-polarized beamlet, converting each p-polarized beamlet to a first s-polarized output beamlet, and spatially interleaving the s-polarized beamlets with the first s-polarized output beamlets.
Abstract translation: 图像投影仪包括具有输入和输出小透镜阵列的空间交错偏振转换器，并且可以将其作为转换的线性偏振光发射。 图像投影仪还包括具有像素阵列并且能够反射转换的光的透镜单元和投影仪组件。 输出小透镜阵列，透镜单元和投影仪组件形成将输入小透镜阵列成像到像素阵列的顶表面的成像系统。 用于将光转换成具有单个共同偏振态的输出光束的方法包括将光作为多个具有s偏振分量和p偏振分量的子束进行发射，将每个子束分成透射的p偏振子束， 反射的s偏振子束，将每个p偏振子束转换为第一s偏振输出子束，以及将s偏振子束与第一s偏振输出子束进行空间交错。
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公开(公告)号：US20160091722A1
公开(公告)日：2016-03-31
申请号：US14869067
申请日：2015-09-29
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu , Jau-Jan Deng , Regis Fan
CPC classification number: G02B27/0172 , G02B5/12 , G02B5/3083 , G02B27/0093 , G02B27/141 , G02B27/283 , G02B2027/0112 , G02B2027/0138 , G02B2027/0178 , G02B2027/0181 , G02B2027/0187 , G06F3/013 , H04N5/2256 , H04N5/332
Abstract: A near-eye display device, with coaxial eye imaging, for mounting in field of view of an eye of a user, includes a display unit for displaying a display image, a viewing unit for (i) presenting the display image to the eye based upon polarized visible light received from the display unit and (ii) transmitting ambient light from an ambient scene toward the eye, and an eye imaging unit including (a) an illumination module for generating infrared light, (b) a first polarizing beamsplitter interface, disposed between the display unit and the viewing unit, for (i) merging a polarized infrared component of the infrared light with the polarized visible light and (ii) separating from the polarized visible light a portion of the polarized infrared component reflected by the eye, and (c) a camera for forming an image of the eye based upon the polarized infrared component reflected by the eye.
Abstract translation: 具有用于安装在用户眼睛的视野中的同轴眼睛成像的近眼显示装置包括用于显示显示图像的显示单元，用于（i）将显示图像呈现给眼睛的观察单元 在从所述显示单元接收到的偏振可见光和（ii）从环境场景朝向眼睛发射环境光的眼睛成像单元和包括（a）用于产生红外光的照明模块的眼睛成像单元，（b）第一偏振分束器接口， 设置在所述显示单元和所述观察单元之间，用于（i）将所述红外光的偏振红外分量与所述偏振的可见光合并，以及（ii）从所述偏振的可见光中分离出由所述眼睛反射的偏振的红外分量的一部分， 以及（c）基于由眼睛反射的偏振红外分量形成眼睛的图像的相机。
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公开(公告)号：US10684477B2
公开(公告)日：2020-06-16
申请号：US15097137
申请日：2016-04-12
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu , Jau-Jan Deng , Regis Fan
IPC: G02B27/01 , G02B27/42 , G02B27/28 , G02B27/10 , G06F3/01 , G02B27/14 , G02B5/30 , G02B5/12 , H04N5/33 , G02B27/00
Abstract: A near-eye display device includes (a) a display unit for displaying a display image, (b) a viewing unit for presenting the display image to the eye and transmitting ambient light from an ambient scene toward the eye, and (c) an eye imaging unit including (i) an illumination module for generating at least three infrared light beams propagating along at least three different, non-coplanar directions, respectively, (ii) a first beamsplitter interface, disposed between the display unit and the viewing unit, for merging at least a portion of each of the infrared light beams with visible display light to direct each portion toward the eye via the viewing unit, and (iii) a camera for imaging, via the viewing unit and the first beamsplitter interface, pupil of the eye and reflections of the infrared light beams incident on the eye, to form one or more images indicative of gaze direction of the eye.
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公开(公告)号：US10409078B2
公开(公告)日：2019-09-10
申请号：US14605554
申请日：2015-01-26
Applicant: OmniVision Technologies, Inc.
Inventor： Jau-Jan Deng , Regis Fan , Yi-Wei Liu
Abstract: A lensed beam-splitter prism array includes a beam-splitter substrate with a plurality of planar and parallel thin-film coatings each spanning a top substrate surface and a bottom substrate surface, and making an oblique angle therebetween, and a lens form layer formed on the top surface and having a plurality of lens forms, each lens form being above one of the plurality of coatings. A method for fabricating a lensed beam-splitter prism includes bonding a plurality of substrates to form a substrate stack having a coating between each adjacent substrate pair. The method also includes forming a stack slice by applying a plurality of parallel cuts at an oblique angle with respect to each coating. Each coating spans a first stack-slice surface and a second stack-slice surface opposing the first stack-slice surface. The method also includes forming a lens form layer on the first stack-slice surface spanning one or more coatings.
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公开(公告)号：US09753298B2
公开(公告)日：2017-09-05
申请号：US14247521
申请日：2014-04-08
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Yi-Wei Liu
CPC classification number: G02B27/48 , G02B3/0006 , G03B21/2033 , G03B21/208
Abstract: A despeckle optical system for an image projector includes a diffuser, an in-plane vibrator, a microlens array, and a vibrator driver. The in-plane vibrator is coupled to vibrate the diffuser along a vibration plane. The vibrator driver is coupled to drive the in-plane vibrator and configured to drive the in-plane vibrator at different vibration amplitudes for averaging the intensity of speckle in display light that propagates through the diffuser via the microlens array.
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Patent Agency Ranking
公开(公告)号：US09740030B2
公开(公告)日：2017-08-22
申请号：US14278474
申请日：2014-05-15
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu , Wei-Feng Huang , Yen-Sung Wang , Chun-Sheng Fan
IPC: G02F1/1335 , G02C11/00 , G02B27/01 , G02F1/1333 , G02F1/1362 , G02C7/08
CPC classification number: G02C11/10 , G02B27/0172 , G02B27/0176 , G02B2027/0178 , G02C7/088 , G02C11/00 , G02C2200/02 , G02C2200/22 , G02F1/133351 , G02F1/133528 , G02F1/1362 , G02F2001/13355 , Y10T24/32 , Y10T29/49 , Y10T29/49787 , Y10T29/49813
Abstract: A near-eye display device includes (a) a display unit having a liquid-crystal-on-silicon (LCOS) display and a first polarizing beam splitter interface for (i) reflecting illumination light from an illumination module towards the liquid-crystal-on-silicon display and (ii) transmitting display light from the LCOS display based on the illumination light, and (b) a viewing unit having an imaging objective that forms an image of the LCOS display for the pupil based on the display light, and a second polarizing beam splitter interface for (i) reflecting reflected display light from the imaging objective towards the pupil and (ii) transmitting ambient light from an ambient scene towards a pupil, the second polarizing beam splitter interface and the first polarizing beam splitter interface being orthogonal to a common plane.
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公开(公告)号：US20160246068A1
公开(公告)日：2016-08-25
申请号：US14631513
申请日：2015-02-25
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu
CPC classification number: G02B27/285 , G02B3/0006 , G02B5/3083 , G03B21/2033 , G03B21/2073
Abstract: An image projector includes a spatially-interleaved polarization converter having an input and output lenslet array, and may transmit light thereon as converted linearly-polarized light. The image projector also includes a lens unit and a projector assembly having a pixel array and being capable of reflecting the converted light. The output lenslet array, the lens unit, and the projector assembly form an imaging system that images the input lenslet array to a top surface of the pixel array. A method for converting light to an output light beam having a single common polarization state includes transmitting the light as a plurality of beamlets each having an s-polarized component and a p-polarized component, splitting each beamlet into a transmitted p-polarized beamlet and a reflected s-polarized beamlet, converting each p-polarized beamlet to a first s-polarized output beamlet, and spatially interleaving the s-polarized beamlets with the first s-polarized output beamlets.
Abstract translation: 图像投影仪包括具有输入和输出小透镜阵列的空间交错偏振转换器，并且可以将其作为转换的线性偏振光发射。 图像投影仪还包括具有像素阵列并且能够反射转换的光的透镜单元和投影仪组件。 输出小透镜阵列，透镜单元和投影仪组件形成将输入小透镜阵列成像到像素阵列的顶表面的成像系统。 用于将光转换成具有单个共同偏振态的输出光束的方法包括将光作为多个具有s偏振分量和p偏振分量的子束进行发射，将每个子束分成透射的p偏振子束， 反射的s偏振子束，将每个p偏振子束转换为第一s偏振输出子束，以及将s偏振子束与第一s偏振输出子束进行空间交错。
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公开(公告)号：US20150286064A1
公开(公告)日：2015-10-08
申请号：US14247521
申请日：2014-04-08
Applicant: OMNIVISION TECHNOLOGIES, INC.
Inventor： Yi-Wei Liu
CPC classification number: G02B27/48 , G02B3/0006 , G03B21/2033 , G03B21/208
Abstract: A despeckle optical system for an image projector includes a diffuser, an in-plane vibrator, a microlens array, and a vibrator driver. The in-plane vibrator is coupled to vibrate the diffuser along a vibration plane. The vibrator driver is coupled to drive the in-plane vibrator and configured to drive the in-plane vibrator at different vibration amplitudes for averaging the intensity of speckle in display light that propagates through the diffuser via the microlens array.
Abstract translation: 用于图像投影仪的散斑光学系统包括扩散器，面内振动器，微透镜阵列和振动器驱动器。 联接平面内振动器以沿着振动平面振动扩散器。 振动器驱动器被耦合以驱动平面内振动器并且被配置为以不同的振幅来驱动平面内振动器，以平均通过微透镜阵列传播通过扩散器的显示光中的斑点强度。
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公开(公告)号：US20140347572A1
公开(公告)日：2014-11-27
申请号：US14278474
申请日：2014-05-15
Applicant: OmniVision Technologies, Inc.
Inventor： Yi-Wei Liu , Wei-Feng Huang , Yen-Sung Wang , Chun-Sheng Fan
IPC: G02B27/01 , G02F1/1335 , G02F1/1362 , G02F1/1333
CPC classification number: G02C11/10 , G02B27/0172 , G02B27/0176 , G02B2027/0178 , G02C7/088 , G02C11/00 , G02C2200/02 , G02C2200/22 , G02F1/133351 , G02F1/133528 , G02F1/1362 , G02F2001/13355 , Y10T24/32 , Y10T29/49 , Y10T29/49787 , Y10T29/49813
Abstract: A near-eye display device includes (a) a display unit having a liquid-crystal-on-silicon (LCOS) display and a first polarizing beam splitter interface for (i) reflecting illumination light from an illumination module towards the liquid-crystal-on-silicon display and (ii) transmitting display light from the LCOS display based on the illumination light, and (b) a viewing unit having an imaging objective that forms an image of the LCOS display for the pupil based on the display light, and a second polarizing beam splitter interface for (i) reflecting reflected display light from the imaging objective towards the pupil and (ii) transmitting ambient light from an ambient scene towards a pupil, the second polarizing beam splitter interface and the first polarizing beam splitter interface being orthogonal to a common plane.
Abstract translation: 近眼显示装置包括（a）具有液晶硅（LCOS）显示器和第一偏振分束器接口的显示单元，用于（i）将来自照明模块的照明光反射到液晶 - （ii）基于所述照明光从所述LCOS显示器发送显示光，以及（b）具有成像目标的观看单元，所述成像目标基于所述显示光形成所述瞳孔的LCOS显示的图像，以及 第二偏振分束器接口，用于（i）将来自成像物体的反射的显示光反射到瞳孔，以及（ii）将环境光从环境场景向瞳孔传播，第二偏振分束器接口和第一偏振分束器接口为 与公共平面正交。
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公开(公告)号：US12106599B2
公开(公告)日：2024-10-01
申请号：US17839000
申请日：2022-06-13
Applicant: OmniVision Technologies, Inc.
Inventor： Jau-Jan Deng , Yi-Wei Liu
CPC classification number: G06V40/1318 , G06F3/0412 , G06F3/042 , H04M1/0266
Abstract: An image sensor for imaging fingerprints has multiple photodiode groups each with field of view through a microlens determined by optical characteristics of the microlens and locations of the microlens and openings of upper and lower mask layers. Many photodiode groups have fields of view outwardly splayed from a center-direct field of view. A diameter of openings of the upper mask layer distant from the group having a center-direct field of view is larger than openings of a photodiode group having a center-direct field of view. A method of matching illumination of a group of photodiodes with center-direct field of view to illumination of photodiode groups having outwardly splayed fields of view includes sizing openings in the upper mask layer of photodiode groups with outwardly splayed fields of view larger than openings in the upper mask layer associated with photodiode groups having center-direct field of view.
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