Patents by Inventor Chia-Jean Wang
Chia-Jean Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9158113Abstract: An apparatus for simultaneously imaging a subject and displaying computer generated image (“CGI”) light to the subject includes a display array and a photodetector array. The display array and the photodetector array are disposed on a same semiconductor die. The display array includes display pixels configured to selectively generate the CGI light to be sent along a forward optical path. The photodetector array is positioned to receive non-visible image light that is reflected by the subject and directed along a reverse optical path. The CGI light to be sent along the forward optical path travels in a substantially opposite direction as the non-visible image light directed along the reverse optical path.Type: GrantFiled: March 14, 2012Date of Patent: October 13, 2015Assignee: Google Inc.Inventors: Babak Amirparviz, Chia-Jean Wang
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Publication number: 20150199009Abstract: Embodiments of an apparatus comprising a light guide including a proximal end, a distal end, a display positioned near the proximal end, an eye-measurement camera positioned at or near the proximal end to image eye-measurement radiation, a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end. The proximal optical element is optically coupled to the display, the eye-measurement camera and the distal optical element and the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region. Other embodiments are disclosed and claimed.Type: ApplicationFiled: March 27, 2015Publication date: July 16, 2015Inventors: Hayes S. Raffle, Chia-Jean Wang
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Patent number: 9046684Abstract: A method of treating a surface includes providing an object and applying a masking layer to a target surface area of the object. A sacrificial material is applied to a non-target surface area of the object. The method also includes removing the masking layer from the target surface area. The target surface area is exposed to a substance that etches or coats the target surface area. The sacrificial material from the non-target surface area of the object is removed, leaving the target surface area of the object etched or coated by the substance while the non-target surface area is not etched or coated by the substance.Type: GrantFiled: July 12, 2012Date of Patent: June 2, 2015Assignee: Google Inc.Inventors: Casey Feinstein, Matthieu Liger, Chia-Jean Wang
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Patent number: 9001030Abstract: Embodiments of an apparatus comprising a light guide including a proximal end, a distal end, a display positioned near the proximal end, an eye-tracking camera positioned at or near the proximal end to image eye-tracking radiation, a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end. The proximal optical element is optically coupled to the display, the eye-tracking camera and the distal optical element and the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region. Other embodiments are disclosed and claimed.Type: GrantFiled: February 15, 2012Date of Patent: April 7, 2015Assignee: Google Inc.Inventors: Hayes S. Raffle, Chia-Jean Wang
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Publication number: 20150077312Abstract: An optical apparatus includes a light source, a deformable mirror, an actuator system, and a partially transparent mirror. The deformable mirror is positioned in an optical path of the image output from the light source. The actuator system is coupled to the deformable mirror to selectively adjust at least a curvature of the deformable mirror. The partially transparent mirror is positioned to be in front of the eye of the user when the optical apparatus is worn and optically aligned with the deformable mirror such that the image output from the light source positioned peripherally to the eye is reflected by the deformable mirror to the partially transparent mirror and reflected by the partially transparent mirror to the eye of the user.Type: ApplicationFiled: May 13, 2011Publication date: March 19, 2015Applicant: GOOGLE INC.Inventor: Chia-Jean Wang
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Patent number: 8982471Abstract: A wearable computing system may include a head-mounted display (HMD) and an optical system with a display panel configured to generate images. The optical system may include an optical element that is adjustable between at least a first configuration and a second configuration. When the optical element is in the first configuration, the images generated by the display panel are viewable at an internal viewing location. When the optical element is in the second configuration, the images generated by the display panel are projected externally from the HMD. For example, the location, refractive index, reflectance, opacity, and/or polarization of the optical element could be adjusted.Type: GrantFiled: April 16, 2012Date of Patent: March 17, 2015Assignee: Google Inc.Inventors: Thad Eugene Starner, Chia-Jean Wang
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Patent number: 8947783Abstract: An optical combiner includes a first, second, and third color combiner layer (“CCL”). The first CCL includes a first diffractive grating coated with a first filter configured to reflect a first color light and pass a second and a third color light. The second CCL includes a second diffractive grating coated with a second filter configured to reflect the second color light and pass the third color light. The third CCL includes a third diffractive grating coated with a third filter configured to partially reflect visible light. The diffractive gratings are each embedded in an index matched material and are angle-tuned diffractive gratings configured to receive image light at an angle and respectively reflect the first, second, and third color light in the image light at an order of diffraction that directs the light to an eye of a user.Type: GrantFiled: January 2, 2013Date of Patent: February 3, 2015Assignee: Google Inc.Inventors: Anurag Gupta, Chia-Jean Wang
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Patent number: 8848289Abstract: An eyepiece for a HMD includes a waveguide, an ambient light polarizer, and a wire grid polarizer with a diffraction lens having a lens function patterned into the wire grid polarizer. Polarized image light is guided between eye-ward and ambient sides of the waveguide from a display source to a viewing region of the waveguide where the polarized image light is directed out of the waveguide through the eye-ward side. The viewing region passes ambient light incident on the ambient side through to the eye-ward side. The ambient light polarizer is disposed adjacent to the ambient side to polarize the ambient light into polarized ambient light having a second polarization orthogonal to the first polarization. The wire grid polarizer is disposed adjacent to the eye-ward side along the viewing region. The wire grid polarizer is oriented to applying the lens function to the polarized image light via diffraction.Type: GrantFiled: March 15, 2012Date of Patent: September 30, 2014Assignee: Google Inc.Inventors: Babak Amirparviz, Chia-Jean Wang
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Publication number: 20140185142Abstract: An optical combiner includes a first, second, and third color combiner layer (“CCL”). The first CCL includes a first diffractive grating coated with a first filter configured to reflect a first color light and pass a second and a third color light. The second CCL includes a second diffractive grating coated with a second filter configured to reflect the second color light and pass the third color light. The third CCL includes a third diffractive grating coated with a third filter configured to partially reflect visible light. The diffractive gratings are each embedded in an index matched material and are angle-tuned diffractive gratings configured to receive image light at an angle and respectively reflect the first, second, and third color light in the image light at an order of diffraction that directs the light to an eye of a user.Type: ApplicationFiled: January 2, 2013Publication date: July 3, 2014Applicant: Google Inc.Inventors: Anurag Gupta, Chia-Jean Wang
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Patent number: 8760762Abstract: An image waveguide includes first and second reflective surfaces being substantially parallel and opposing each other. The waveguide receives light from an in-coupling region through the first reflective surface, the light received at a first angle of incidence with respect to the second reflective surface. A reflective end surface positioned at an end of the waveguide and offset from perpendicular to the first and second reflective surfaces reflects the light to a second angle of incidence with respect to the second reflective surface that is less than the first angle of incidence. The light exits through an out-coupling region disposed on the first reflective surface to output the light at the second angle of incidence from the waveguide out the first reflective surface.Type: GrantFiled: August 12, 2011Date of Patent: June 24, 2014Assignee: Google Inc.Inventors: Daniel Kelly, Chia-Jean Wang
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Patent number: 8665178Abstract: An apparatus that includes a waveguide comprising a front surface, a back surface and an embedded structure between the front surface and the back surface. A reflective array is formed by at least part of the embedded structure. The reflective array includes a plurality of wedges, each wedge having a primary facet, a secondary facet, and a plateau facet wherein at least one of the plurality of primary facets is at least partially reflective. Other implementations are disclosed and claimed.Type: GrantFiled: March 1, 2012Date of Patent: March 4, 2014Assignee: Google, Inc.Inventor: Chia-Jean Wang
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Publication number: 20130241907Abstract: An apparatus for simultaneously imaging a subject and displaying computer generated image (“CGI”) light to the subject includes a display array and a photodetector array. The display array and the photodetector array are disposed on a same semiconductor die. The display array includes display pixels configured to selectively generate the CGI light to be sent along a forward optical path. The photodetector array is positioned to receive non-visible image light that is reflected by the subject and directed along a reverse optical path. The CGI light to be sent along the forward optical path travels in a substantially opposite direction as the non-visible image light directed along the reverse optical path.Type: ApplicationFiled: March 14, 2012Publication date: September 19, 2013Applicant: GOOGLE INC.Inventors: Babak Amirparviz, Chia-Jean Wang
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Publication number: 20130242392Abstract: An eyepiece for a HMD includes a waveguide, an ambient light polarizer, and a wire grid polarizer with a diffraction lens having a lens function patterned into the wire grid polarizer. Polarized image light is guided between eye-ward and ambient sides of the waveguide from a display source to a viewing region of the waveguide where the polarized image light is directed out of the waveguide through the eye-ward side. The viewing region passes ambient light incident on the ambient side through to the eye-ward side. The ambient light polarizer is disposed adjacent to the ambient side to polarize the ambient light into polarized ambient light having a second polarization orthogonal to the first polarization. The wire grid polarizer is disposed adjacent to the eye-ward side along the viewing region. The wire grid polarizer is oriented to applying the lens function to the polarized image light via diffraction.Type: ApplicationFiled: March 15, 2012Publication date: September 19, 2013Applicant: GOOGLE INC.Inventors: Babak Amirparviz, Chia-Jean Wang
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Publication number: 20130207887Abstract: Embodiments of an apparatus comprising a light guide including a proximal end, a distal end, a display positioned near the proximal end, an eye-tracking camera positioned at or near the proximal end to image eye-tracking radiation, a proximal optical element positioned in the light guide near the proximal end and a distal optical element positioned in the light guide near the distal end. The proximal optical element is optically coupled to the display, the eye-tracking camera and the distal optical element and the distal optical element is optically coupled to the proximal optical element, the ambient input region and the input/output region. Other embodiments are disclosed and claimed.Type: ApplicationFiled: February 15, 2012Publication date: August 15, 2013Applicant: GOOGLE INC.Inventors: Hayes S. Raffle, Chia-Jean Wang
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Patent number: 8508830Abstract: A multi-layer optical structure includes a pixel array layer, an addressing matrix layer, and a micro lens array. The pixel array layer includes an array of quantum dot pixels for emitting an image from a first side of the multi-layer optical structure. The addressing matrix layer adjoins the pixel array layer and includes electrically conductive signal lines to individual address and activate the quantum dot pixels to generate the image. The micro lens array includes micro lenses optically aligned with the quantum dot pixels in an emission path of the image to focus the image.Type: GrantFiled: May 13, 2011Date of Patent: August 13, 2013Assignee: Google Inc.Inventor: Chia-Jean Wang
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Patent number: 8446675Abstract: An image waveguide includes an in-coupling region for receiving input light into the image waveguide and an out-coupling region for emitting output light from the image waveguide. The in-coupling region includes at least one in-coupling structure orientated to direct the input light into the waveguide for propagation towards the out-coupling region as guided light. The out-coupling region includes a two dimensional array of out-coupling mirror structures orientated to reflect the guided light out of the waveguide as the output light.Type: GrantFiled: April 26, 2012Date of Patent: May 21, 2013Assignee: Google Inc.Inventors: Chia-Jean Wang, Babak Amirparviz
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Publication number: 20130108229Abstract: Implementations are described of a waveguide apparatus including a proximal end, a distal end, a front surface and a back surface, the back surface being spaced apart from the front surface. A display input region is positioned at or near the proximal end, an ambient input region is positioned on the front surface near the distal end and an output region is positioned on the back surface near the distal end. One or more optical elements is positioned in or adjacent to the waveguide to direct display light from the display input region to the output region and to direct ambient light from the ambient input region to the output region, and an switchable mirror layer is positioned in or on the waveguide to selectively control the amount of ambient light that is directed to the output region. Other embodiments are disclosed and claimed.Type: ApplicationFiled: October 28, 2011Publication date: May 2, 2013Applicant: GOOGLE INC.Inventors: Thad E. Starner, Edward Keyes, Chia-Jean Wang, Xiaoyu Miao, Mark B. Spitzer
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Patent number: 8189263Abstract: An image waveguide includes an in-coupling region for receiving input light into the image waveguide and an out-coupling region for emitting output light from the image waveguide. The in-coupling region includes a one dimensional array of in-coupling mirror structures orientated to reflect the input light within the waveguide towards the out-coupling region as guided light. The out-coupling region includes a two dimensional array of out-coupling mirror structures orientated to reflect the guided light out of the waveguide as the output light.Type: GrantFiled: April 1, 2011Date of Patent: May 29, 2012Assignee: Google Inc.Inventors: Chia-Jean Wang, Babak Amirparviz
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Publication number: 20100220970Abstract: The present invention relates to an assembly of multiple waveguides which includes a substrate and a plurality of waveguides positioned on said substrate at locations effective to suppress cross-talk between different waveguides. The plurality of waveguides each comprise an elongate array of quantum dots extending between sets of first and second locations on the substrate. The waveguides are positioned to receive: (1) pumped light uniformly applied to the array to produce electron-hole pairs and to enable optical gain and (2) signal light at the first location to trigger an emission from the quantum dot at the first location and transmission of photons along the array to the second location. A light transmission system which includes this assembly as well as methods of making and using the assembly are also disclosed.Type: ApplicationFiled: March 2, 2010Publication date: September 2, 2010Applicant: UNIVERSITY OF WASHINGTONInventors: Lih Y. LIN, Chia-Jean WANG, Babak A. PARVIS
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Patent number: 7706660Abstract: The present invention relates to an assembly of multiple waveguides which includes a substrate and a plurality of waveguides positioned on said substrate at locations effective to suppress cross-talk between different waveguides. The plurality of waveguides each comprise an elongate array of quantum dots extending between sets of first and second locations on the substrate. The waveguides are positioned to receive: (1) pumped light uniformly applied to the array to produce electron-hole pairs and to enable optical gain and (2) signal light at the first location to trigger an emission from the quantum dot at the first location and transmission of photons along the array to the second location. A light transmission system which includes this assembly as well as methods of making and using the assembly are also disclosed.Type: GrantFiled: May 18, 2007Date of Patent: April 27, 2010Assignee: University of WashingtonInventors: Lih Y. Lin, Chia-Jean Wang, Babak A. Parvis