Patents Examined by Balram T Parbadia
  • Patent number: 11454739
    Abstract: A method is disclosed of fabricating all-dielectric flat lens with low refractive index comprising: selecting dielectric substrate material and lens structure material; determining incident wavelength; calculating phase modulation corresponding to each pillar unit; periodically sampling circular area of dielectric substrate with radius to obtain plurality of sampling points; calculating phase modulation required at position of each sampling point; obtaining pillar corresponding to each sampling point; arranging different dielectric pillars with low refractive index and same thickness are arranged on dielectric substrate, thereby obtaining all dielectric flat lens with low refractive index.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: September 27, 2022
    Assignee: Sun Yat-Sen University
    Inventors: Jianwen Dong, Zhibin Fan, Yujie Chen, Zengkai Shao, Siyuan Yu
  • Patent number: 11448797
    Abstract: A viewing lens and method for treating lenses to minimize glare and reflections for birds with tetra-chromatic vision. The anti-reflection lens is treated to with a coating on the surface. The coating is configured to enable the lens surface to be less perceptible to a bird with tetra-chromatic vision by reducing reflections therefrom. The lens treatment includes applying an anti-reflective coating in multiple coats. The coats comprise an adhesion composition, a low index composition (such as SiO2), a high index composition (such as ZrO2), and a superhydrophobic composition that are applied in subsequent layers of varying nanometer thicknesses. The treated lens exhibits minimal reflection properties in the visible range of the electromagnetic spectrum and almost no reflection in the UV-A range. This creates a lens surface that is difficult for birds with tetra-chromatic vision to see a reflection therefrom.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: September 20, 2022
    Inventors: Norman L. Kester, Adam E. Winkelman, Nicholas M. Hall, Richard D. Unbankes
  • Patent number: 11439477
    Abstract: A disclosed medical observation system includes a capturing unit operable to capture an image of an observation target; and a light projection unit operable to project light on the observation target, outside a capturing area that is captured by the capturing unit and in a periphery of the capturing area, the light enabling recognition of a capturing state of the capturing unit.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: September 13, 2022
    Inventor: Kazuhiro Yamaguchi
  • Patent number: 11442208
    Abstract: A method of making an optical filter film with varying optical properties includes the step of drawing a multilayer polymeric preform into an optical filter and varying at least one environmental condition being a member of the group including of heat, pressure, tension, and a drawing speed, the at least one environmental condition being varied over time or over a distance, or both, and causing a variation in layer thickness within the optical filter. The preform may be drawn through a furnace subjecting the preform to a heating power that varies across a width of the furnace or over time or both across the width and over time. The preform may also be drawn through the furnace while the drawing speed varies across a width of the furnace or over time or both across the width and over time.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: September 13, 2022
    Inventors: Esmaeil Banaei, Patricia Ximena Coronado Domenge, Justin Boga
  • Patent number: 11442257
    Abstract: A camera module includes an imaging lens system, an image sensor and a plurality of light-folding elements. The imaging lens system is configured to focus imaging light onto an image surface. The image sensor is disposed on the image surface. The plurality of light-folding elements includes at least one image-side light-folding element disposed on an image side of the imaging lens system, and each of the light-folding elements is configured to fold the imaging light from an entrance optical path thereof to an exit optical path thereof. At least one light-shielding mechanism is arranged on at least one of the entrance light path and the exit light path of the at least one image-side light-folding element. The at least one light-shielding mechanism has a minimal opening, and the minimal opening surrounds the imaging light in the at least one of the entrance optical path and the exit optical path.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: September 13, 2022
    Inventors: Cheng-Feng Lin, Lin An Chang, Ming-Ta Chou
  • Patent number: 11435601
    Abstract: Operation of an electronic contact lens takes into account saccadic motion of the eye and reduced visual perception during saccades (saccadic suppression). The user's eye motion is tracked, and onset of a saccade is detected based on the eye's motion. For example, saccades may be detected when the eye's acceleration or jerk exceeds a threshold. The endpoint of the saccade is then predicted in real-time while the saccade is still occurring. This may be the temporal endpoint (i.e., when the saccade ends) and/or the positional endpoint (i.e., the eye position at the end of the saccade). Operation of the electronic contact lens is adjusted based on the predicted endpoint.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: September 6, 2022
    Assignee: Tectus Corporation
    Inventors: Abhishek Deepak Bhat, Joseph Czompo, Ramin Mirjalili, Michael West Wiemer, Erik Anderson
  • Patent number: 11435500
    Abstract: An optical lens assembly has a central axis and includes at least one dual molded lens element. The dual molded lens element includes a light transmitting portion and a light absorbing portion, wherein the light transmitting portion includes an optical effective region and a lens peripheral region, and the lens peripheral region surrounds the optical effective region. The light absorbing portion surrounds the optical effective region. The light transmitting portion and the light absorbing portion are made of different plastic materials with different colors, and are integrally formed by an injection molding. The light transmitting portion or the light absorbing portion includes a plurality of annular convex structures, and the annular convex structures surround the central axis.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: September 6, 2022
    Inventors: Ming-Ta Chou, Ming-Shun Chang
  • Patent number: 11435508
    Abstract: A hybrid optical filter includes a plurality of film layers laminated to one another. This renders the filter flexible enough to be bendable and to implement a combination of at least two different wavelength-dependent optical filtering properties in a single hybrid optical filter. Two or more of the optical filtering properties may be caused by interference-based blocking of different ranges of wavelengths of light. Additionally or alternatively, at least one of the optical filtering properties may be an absorptive blocking of a first range of wavelengths of light and at least another one of the optical filtering properties is an interference-based blocking of a second range of wavelengths of light. The first range of wavelengths and the second range of wavelengths may overlap to provide for customized ranges of blocked wavelengths.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: September 6, 2022
    Inventors: Esmaeil Banaei, Justin Boga, Cristina Marie Bisson
  • Patent number: 11415781
    Abstract: The microobjective optical system and the optical device provided in the present disclosure use a catadioptric structure. Specifically, a catadioptric relay lens group and a complex transmissive collimating lens group are combined to effectively correct a higher-order spherical aberration, and control astigmatism, field curvature, and primary and higher-order coma related to a field of view. In a spectrum band ranging from 320 nm to 800 nm, the field of view is larger than 2 mm, a numerical aperture is 1.0, and imaging quality reaches a diffraction limit.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: August 16, 2022
    Inventor: Xin Zhang
  • Patent number: 11415728
    Abstract: A holographic display can include a light source configured to output light; a parallax generator optically coupled to the light source; an optical volume, where the light is perceivable as a three dimensional image within the optical volume; optionally, a flip controller; and, optionally, a viewcone expander.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: August 16, 2022
    Assignee: Looking Glass Factory, Inc.
    Inventors: Alexis Hornstein, Lee Shiu Pong, Shawn Michael Frayne
  • Patent number: 11402664
    Abstract: The present disclosure provides a pair of glasses, including spectacle lenses and a sensing device, wherein the spectacle lens includes two layers of lenses which form a cavity, wherein the layer of lens on a wearing side of the spectacle lens is deformable, the cavity is filled with a first liquid and a second liquid, a volume of the first liquid is greater than that of the second liquid, and an electrowetting film is provided oppositely on a middle portion of an inner surface of at least one layer of lens, and wherein the sensing device is configured to measure a distance between the glasses and an object to be observed, wherein in the case where the measured distance is less than a preset spacing, the sensing device is turned on to apply a voltage to the electrowetting film.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 2, 2022
    Inventors: Qi Wang, Tingting Wang
  • Patent number: 11391918
    Abstract: An optical imaging system includes a first lens having a positive refractive power, an image-side surface of the first lens being concave, a second lens, a third lens, an image-side surface of the third lens being concave, a fourth lens, a fifth lens, an image-side surface of the fifth lens being concave, and a sixth lens having a positive refractive power and having an inflection point formed on an image-side surface, wherein an F number of the optical imaging system is lower than 2.2.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: July 19, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Il Yong Park
  • Patent number: 11385097
    Abstract: Systems and methods related to optical measurement of vibrations experienced by components may include a light source, a reflector associated with a component to be measured, and an optical sensor. In addition, the systems may include one or more fiber optic cables to transmit emitted light between the light source and the reflector, and to transmit reflected light between the reflector and the optical sensor. The optical measurement systems may enable detection of a large dynamic range of vibrations experienced by components or systems, and may also enable determinations related to high cycle fatigue and other stresses. Further, the optical measurement systems may be integrated into systems having various components to be measured, thereby enabling continuous, in-situ measurement of vibrations and health, as well as continuous monitoring and adjustment of operations of such systems.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: July 12, 2022
    Assignee: Amazon Technologies, Inc.
    Inventors: Noah Allstot, Dominic Scott Lebaron, Bradley Leonard, Ryan Jeffrey Aalund
  • Patent number: 11385444
    Abstract: A micro lens assembly for short-range imaging, in order from the object side to the image side: a flat panel, a first lens group, a stop, a second lens group, and an IR cut filter. Wherein a focal length of the first lens group combined is LF, a focal length of the second lens group combined is RF, a distance from an object to be imaged to an object-side surface of a first lens element of the first lens group along an optical axis is OTL, a distance from the object to be imaged to an image plane along the optical axis is TTL, and they satisfy the relations: LF>0; RF>0; 0.65<LF/RF<1.25; OTL<2.0 mm; TTL<10 mm Such a lens assembly can obtain higher short-range imaging effect while maintaining its miniaturization and can reduce the aberration in short-range imaging.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: July 12, 2022
    Inventor: Sian-Chih Ke
  • Patent number: 11366251
    Abstract: A supporting element includes a light-shielding portion and a supporting portion connected to the light-shielding portion. The light-shielding portion has a first surface, a second surface, a first inner-side connecting surface, and a first outer-side connecting surface. The first inner-side connecting and outer-side connecting surfaces connect the first and second surfaces, and face toward the inside and outside of the supporting element respectively. The first surface and the second surface are curved surfaces, and the first inner-side connecting surface further includes a first light-shielding surface adjacent to the first surface. The supporting portion has a third surface, a fourth surface, a second inner-side connecting surface, and a second outer-side connecting surface. The second inner-side connecting surface and the second outer-side connecting surface connect the third and the fourth surfaces, and face toward the inside and outside of the supporting element respectively.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 21, 2022
    Inventors: Wensen Chen, Shihui Wu, Minqiang Ye
  • Patent number: 11360248
    Abstract: Systems including one or both of a light emitter or a light receiver and an optical filter adjacent one or both of the light emitter or the light receive are described. The optical filter includes a wavelength selective scattering layer that scatters near-infrared light less than visible light. The wavelength selective scattering layer includes a plurality of particles. The plurality of particles have an imaginary refractive index less than 10.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: June 14, 2022
    Inventors: Neeraj Sharma, Guanglei Du, Matthew E. Sousa, Jeremy O. Swanson, Jung-Sheng Wu
  • Patent number: 11360316
    Abstract: Augmented reality lenses configured to be light, fit in standard eyeglass frames, have a field of view of 90 degrees and visible light intensity of above 1000 NIT. The lenses receive an encoded light image from an image generator. Transfer optics and an image presenter are integrally formed within the lens. An image presenter curved in one direction having reflective diffraction gratings on a concave surface of the curve and configured to present the encoded light image as a virtual augmented reality image to the eye of the wearer. The transfer optics system also having reflectors and reflective gratings and is configured to propagate image of encoded light from the image generator to the image presenter. The transfer optics system and image presenter are integrally formed in at least one lens of the augmented reality eyeglasses.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: June 14, 2022
    Inventor: Michael Shlomo Ben Yacov
  • Patent number: 11353702
    Abstract: A near-eye optical display system that may be utilized in mixed reality applications and devices includes a see-through waveguide on which diffractive optical elements (DOEs) are disposed that are configured for in-coupling, exit pupil expansion, and out-coupling. The optical display system includes a conformal coating that is thickness modulated over different areas of the display to enable tuning of the optical parameters such as refractive index and reflectivity to meet various design requirements. The conformal coating may also be utilized to enhance physical characteristics of the optical display system to thereby improve reliability and resist wear and damage from handling and exposure to environmental elements.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: June 7, 2022
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Tapani Matias Alasaarela, Jani Kari Tapio Tervo
  • Patent number: 11353693
    Abstract: Described herein is a polymorphic display, which is a unitary apparatus constructed such that a wide variety of electro-optic functions are enabled. The polymorphic display, even when having multiple pixels, enables sharing of selected structures among the pixels. In a multi-pixel construction, there is a set of pixels in the display that exhibit one set of operable properties, such as particular stability, sequencing, and switching properties, and another set of pixels that are different from the first set. That is, they have different stability, sequencing, or switching properties. In such a way, a highly flexible polymorphic display may be construed to satisfy a wide range of display need.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 7, 2022
    Inventors: Paul Atkinson, John Rilum, Ben Reeves
  • Patent number: 11347131
    Abstract: Provided is a processing device including a determination unit that determines, in a case in which a lens unit is mounted on a camera body via a lens adapter having an anti-vibration function of suppressing blur in a captured image, whether the lens unit has the anti-vibration function. The determination unit further causes the lens adapter to perform a coordinative arithmetic operation for anti-vibration on the basis of determination that the lens unit has the anti-vibration function.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: May 31, 2022
    Inventor: Norio Himei