Omnivision Technologies Patent Grants

Programmable current source for a time of flight 3D image sensor

Granted: May 23, 2017
Patent Number: 9658336
A programmable current source for use with a time of flight pixel cell includes a first transistor. A current through the first transistor is responsive to a gate-source voltage of the first transistor. A current control circuit is coupled to the first transistor and coupled to a reference current source to selectively couple a reference current of the reference current source through the first transistor during a sample operation. A sample and hold circuit is coupled to the first…

Eyewear display system providing vision enhancement

Granted: May 23, 2017
Patent Number: 9658454
An eyewear display system includes a camera coupled to capture an image of an object in a surrounding environment. A projector is coupled to receive the captured image to output a projected image. A polarizing beam splitter optically coupled to receive the projected image and an actual view of the surrounding environment. The polarizing beam splitter is optically coupled to output a combined view of the projected image combined with the actual view of the surrounding environment. The…

Image sensor with semiconductor trench isolation

Granted: May 23, 2017
Patent Number: 9659989
An image sensor pixel includes a photodiode disposed in a semiconductor material, and doped regions surrounding the photodiode, at least in part. The doped regions include a doped portion of the semiconductor material. Deep trench isolation structures are disposed in the doped regions, and surround the photodiode at least in part. The deep trench isolation structures include a SiGe layer disposed on side walls of the deep trench isolation structures, a high-k dielectric disposed on the…

Floorplan-optimized stacked image sensor and associated methods

Granted: May 16, 2017
Patent Number: 9652575
A floorplan-optimized stacked image sensor and a method for designing the sensor are disclosed. A sensor layer includes multiple PSAs partitioned into PSA groups. A circuit layer includes multiple analog-to-digital converters each communicatively coupled to a different PSA. Each analog-to-digital converter (ADC) is semi-aligned to the PSA group associated with the PSA to which it is communicatively coupled. The floorplan of ADCs maximizes contiguous global-based space on the circuit…

Chip-scale packaged image sensor packages with black masking and associated packaging methods

Granted: May 16, 2017
Patent Number: 9653504
A chip-scale image sensor packaging method with black masking includes (a) cutting a composite wafer having a plurality of image sensors bonded to a common glass substrate to form slots in the common glass substrate, wherein the slots define a cover glass for each of the image sensors, respectively, (b) forming black mask in the slots such that the black mask, for each of the image sensors, spans perimeter of the cover glass as viewed cross-sectionally along optical axis of the image…

CMOS image sensor with peninsular ground contracts and method of manufacturing the same

Granted: May 16, 2017
Patent Number: 9653511
A complementary metal oxide semiconductor (CMOS) image sensor with peninsular ground contacts includes (a) a substrate having a plurality of pixel units arranged in rows of pixel units and (b) a plurality of ground contacts for grounding the pixel units, wherein the ground contacts are formed in respective peninsular regions of the substrate within respective ones of the pixel units, and wherein each of the peninsular regions is only partly enclosed by a shallow trench isolation and the…

High dynamic range imaging with reduced frame buffer

Granted: May 16, 2017
Patent Number: 9654699
A system and method for high dynamic range (HDR) imaging includes writing a first, second, and third sub-frame to a memory at a first, second, and third readout time, respectively, the first, second, and third sub-frame being generated by a same first sub-array of the array of image pixels. Subsequent to the third readout time, the first, second, and third sub-frames are sent to an image signal processor. Also subsequent to the third readout time, a fourth sub-frame is sent to the image…

360 degree multi-camera system

Granted: May 9, 2017
Patent Number: 9648234
A 360 degree camera system includes a support structure, a plurality of image capture devices, a plurality of lens systems, and an image processing system. The image capture devices are positioned such that their height is greater than their width. The image processing system includes a rotation module for remapping the pixel addresses of the image data to join the captured images along their long edges.

Systems and methods for obtaining image depth information

Granted: April 25, 2017
Patent Number: 9633441
A system for obtaining image depth information for at least one object in a scene includes (a) an imaging objective having a first portion for forming a first optical image of the scene, and a second portion for forming a second optical image of the scene, the first portion being different from the second portion, (b) an image sensor for capturing the first and second optical images and generating respective first and second electronic images therefrom, and (c) a processing module for…

Optical assemblies including dry adhesive layers and associated methods

Granted: April 18, 2017
Patent Number: 9627559
An optical assembly includes an image sensor, a lens module disposed over the image sensor in a first direction, a transparent glue layer, and a transparent dry adhesive layer formed of a different material than the transparent glue layer. Each of the transparent glue layer and the transparent dry adhesive layer are disposed between the image sensor and the lens module in the first direction. Each of the transparent glue layer and the transparent dry adhesive layer are optically coupled…

Imaging systems with single-photon-avalanche-diodes and sensor translation, and associated methods

Granted: April 18, 2017
Patent Number: 9628735
An imaging system with single-photon-avalanche-diodes (SPADs) and sensor translation for capturing a plurality of first images to enable generation of an enhanced-resolution image includes (a) an image sensor with SPAD pixels for capturing the plurality of first images at a plurality of spatially shifted positions of the image sensor, respectively, and (b) an actuator for translating the image sensor, parallel to its light receiving surface, to place the image sensor at the plurality of…

Image sensor pixel for high dynamic range image sensor

Granted: March 28, 2017
Patent Number: 9608019
An image sensor pixel for use in a high dynamic range image sensor includes a first photodiode and a second photodiode. The first photodiode include a first doped region, a first lightly doped region, and a first highly doped region disposed between the first doped region and the first lightly doped region. The second photodiode disposed in has a second full well capacity substantially equal to a first full well capacity of the first photodiode. The second photodiode includes a second…

Edge reflection reduction

Granted: March 28, 2017
Patent Number: 9608023
An image sensor package includes an image sensor with a pixel array disposed in a semiconductor material, and a transparent shield adhered to the semiconductor material. The pixel array is disposed between the semiconductor material and the transparent shield. A light blocking layer is disposed in recessed regions of the transparent shield, and the recessed regions are disposed on an illuminated side of the transparent shield. The light blocking layer is disposed to prevent light from…

Stacked embedded SPAD image sensor for attached 3D information

Granted: March 28, 2017
Patent Number: 9608027
A pixel array includes a plurality of visible light pixels arranged in the pixel array. Each one of the plurality of visible light pixels includes a photosensitive element arranged in a first semiconductor die to detect visible light. Each one of the plurality of visible light pixels is coupled to provide color image data to visible light readout circuitry disposed in a second semiconductor die stacked with and coupled to the first semiconductor die in a stacked chip scheme. A plurality…

Interface circuit with configurable variable supply voltage for transmitting signals

Granted: March 28, 2017
Patent Number: 9608633
An interface circuit includes a pre-driver that converts the single-ended signal to an intermediate differential signal having a first voltage swing responsive to a first supply voltage supplied to the pre-driver. An output driver is coupled to receive the intermediate differential signal from the pre-driver to convert the intermediate differential signal to an output differential signal coupled to be received by a load coupled to the output driver. The output differential signal has a…

Method for combining images

Granted: March 21, 2017
Patent Number: 9600863
A method for combining images includes capturing a first image including a subject from a first camera. A second image is captured from a second camera and the second image includes the subject. First pre-processing functions are applied on the first image to produce a first processed image. The first pre-processing functions include applying a distortion component of a rotation matrix to the first image. The rotation matrix defines a corrected relationship between the first and the…

High dynamic range image sensor with reduced sensitivity to high intensity light

Granted: March 7, 2017
Patent Number: 9590005
An image sensor includes first and second pluralities of photodiodes interspersed among each other in a semiconductor substrate. Incident light is to be directed through a surface of the semiconductor substrate into the first and second pluralities of photodiodes. The first plurality of photodiodes has greater sensitivity to the incident light than the second plurality of photodiodes. A metal film layer is disposed over the surface of the semiconductor substrate over the second plurality…

Contact resistance reduction

Granted: February 28, 2017
Patent Number: 9583527
An image sensor includes a plurality of photodiodes disposed in a semiconductor material and a floating diffusion disposed in the semiconductor material adjacent to a photodiode in the plurality of photodiodes. A transfer gate is disposed to transfer image charge generated in the photodiode into the floating diffusion. A first electrical contact with a first cross sectional area is coupled to the transfer gate. A second electrical contact with a second cross sectional area is coupled to…

Lens-free imaging system and method for detecting particles in sample deposited on image sensor

Granted: February 21, 2017
Patent Number: 9574989
A lens-free imaging system for detecting particles in a sample deposited on image sensor includes a fluidic chamber for holding a sample and an image sensor for imaging the sample, wherein the image sensor has a light receiving surface and a plurality of photosensitive pixels disposed underneath the light receiving surface, and wherein the fluidic chamber formed at least in part by the light receiving surface. A method for detecting particles of interest in a sample deposited on an image…

High-throughput fluorescence imaging system and device with sample heating capability, and associated methods

Granted: February 21, 2017
Patent Number: 9574991
A high-throughput fluorescence imaging system with sample heating capability includes an image sensor wafer with a plurality of image sensors for fluorescence imaging a plurality of samples disposed in a respective plurality of fluidic channels on the image sensor wafer. The high-throughput fluorescence imaging system further includes a heating module, thermally coupled with the image sensor wafer, for heating the samples. A method for high-throughput assay processing includes modulating…