Lumileds LLC

Apple Inc.

Koninklijke Philips Corporation N.v.

Kenneth John Vampola

Isaac Wildeson

Parijat Deb

Erik Charles Nelson

Christopher M Dodson

Hans-Helmut Bechtel

Mark Melvin Butterworth

Han Ho Choi

Frederic Stephane Diana

Oleg Borisovich Shchekin

Alan Andrew McReynolds

Dong Zheng

Guocheng Shao

Grigoriy Basin

David D Dashevsky

Mahdi Nezamabadi

Peter N Jeziorek

Nan Y Pacella

Amil Ashok Patel

Eugene C Cheung

Dawei Lu

Floris Crompvoets

Nathaniel T Lawrence

Brian S Pearson

Clarisse Mazuir

April Dawn Schricker

Toni Lopez

Mahesh B Chappalli

Serhan O Isikman

Jerome Chandra Bhat

Brendan Jude Moran

Sheng Liu

Koorosh Aflatooni

Norbertus Antonius Maria Sweegers

Giovanni Cennini

Anand K Chamakura

Jianghong Yu

Joshua A Spechler

Marc Andre De Samber

Aditya B Nayak

Steven N Hanna

Guido Salmaso

Nicolaas Joseph Martin Van Leth

Hugo Johan Comelissen

Weili Chen

Shen Ren

Zhuoran Dai

Ates C Dumlupinar

Alan McREYNOLDS

Reza Tafteh

Francesco LaRocca

A head-mounted device may have a gaze tracking system and an optical sensor. The gaze tracking system may include a camera, ambient light sensor, or other optical sensor to determine an angle/direction of a user's gaze. The optical sensor may be a camera, directional color ambient light sensor, or other optical sensor. After determining the user's gaze, the optical sensor may be used to determine the color of an external object in the direction of the determined angle/direction. For example, the color of the external object may be determined in response to an input from the user, such as a button press, a voice command, or a blink. The determined color may be used as an input color in a virtual space or on another device.

Electronic device with optical sensor for color detection

An electronic display may include an ambient light sensor (ALS) located beneath an active area to sense ambient light above the active area. The ALS may have multiple response channels to perform fast sensing integration, which is synchronized with blanking periods of a pixel on the active area. An emission mask and a heat map may be generated for the ALS and used to generate a calibrated heat map for the ALS. The calibrated heat map of the ALS is used with display content to calculate a crosstalk compensation for the ALS.

System for ambient light sensing or compensation

An electronic device may be attached to an external item. The electronic device may include an optical identification sensor configured to sense a color-encoded tag in the external item when the item is attached to the device. The optical identification sensor may include a board layer, a protective filter layer, wall structures for supporting the protective filter layer on the board layer, a linear array of photodetectors disposed between the board layer and the protective filter layer, a field-of-view restriction filter interposed between the photodetectors and the protective filter layer, and a light source having multiple emitters for illuminating the color-encoded tag. The emitters may be activated sequentially to produce multiple images that are combined to reconstruct an accurate reading of the color-encoded tag, which can then be used to identify the type of external item currently attached to the electronic device.

Electronic devices with optical identification sensor

An automotive headlight is disclosed including: an optical unit including a plurality of optical elements, each optical element having a different central direction; a segmented light-emitting diode (LED) chip including a plurality of LEDs that are separated by trenches formed on the segmented LED chip and arranged in a plurality of sections, each section being aligned with a different respective optical element, and each section including at least one first LED and at least one second LED; and a controller configured to: apply a forward bias to each of the first LEDs, apply a reverse bias to each of the second LEDs, and change a brightness of the first LEDs in any section based on a signal generated by the second LED in that section.

Optoelectronic device and adaptive illumination system using the same

An electronic device may have a display. The display may have light-emitting diode pixels or other pixels. Due to aging-induced degradation of the pixels, the output intensity and color of the pixels may vary over the lifetime of the display. Control circuitry in the device may use an ambient light sensor to measure ambient light and stray display light. The display light measurements may be used in monitoring aging effects so that the control circuitry can compensate for aging-induced pixel degradation. Display light measurements may be made over a sequence of image frames. The image frames in the sequence of frames may include white and black frames or frames of different colors interleaved with black frames. Different frame intensities may be used during measurements of stray display light to gather gamma curves for the display.

Electronic devices with display aging compensation

An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. A set of the pixels may overlap the ambient light sensor so that ambient light measurements may be made on ambient light passing through the set of pixels. Control circuitry in the electronic device may control light transmission through the set of pixels so that different light transmission levels can be used in different ambient light conditions. Directional light measurements may be made by moving transparent pixels dynamically across the surface of the display overlapping the light sensor and/or by using pixelated light modulators to vary the angle of light rays measured by the ambient light sensor.

Electronic devices having light sensors overlapped by displays

A method to produce a light-emitting device package includes mounting junctions on pads of a metalized substrate, where the junctions are at least partially electrically insulated from each other, and forming wavelength converters, where each wavelength converter is located over a different junction and separated by a gap from neighboring wavelength converters.

Phosphor deposition system for LEDs

An electronic device has pixels that form an active area of a display for displaying images for a user. A layer of black ink or other opaque material may be formed on an inner surface of a display cover layer in an inactive area of the display that does not overlap pixels. The housing may have sidewalls such as a rear housing wall that faces away from the display. Ambient light sensor windows may be formed from tapered holes or other holes. The tapered holes may be formed in the opaque material on the display cover layer, may be formed in a rear housing wall or other hosing structure, or may be formed in other portions of the electronic device. Non-tapered holes may also form windows. Tapered holes may have sidewalls with portions that run parallel to their longitudinal axes and portions that are angled relative to their longitudinal axes.

Ambient light sensor windows for electronic devices comprising an optical sensor within an opening in the locally thinned area of an opaque layer

An electronic device may include sensors such as a visible-light image sensor for capturing images. The sensors may also include optical sensors that operate at other wavelengths. An infrared light sensor may be used to gather an infrared light spectrum of a target object. The infrared light sensor may have a beam steerer and other adjustable components such as adjustable lenses and adjustable polarizers. During operation, an infrared beam emitted by the infrared light sensor may be steered onto the target object using information from a captured visible-light image and/or other sensor data such as distance sensor data, orientation sensor data, three-dimensional image sensor data, and data from other sensors. Infrared spectra, visible-light camera images, and/or data from other sensors may be used in characterizing target objects so that notifications can be provided to a user and other actions taken.

Electronic devices with beam-steered infrared light sensing

Ambient light sensor windows for electronic devices

A light emitting device comprises a detector circuit and a light emitting diode (LED) die. The LED die includes a semiconductor stack grown on a substrate. The LED includes an emitter segment formed from one segment of the semiconductor stack. The LED die includes a photosensor segment formed from another segment of the semiconductor stack. The LED die includes a segmentation layer formed between the emitter segment and the photosensor segment. The segmentation layer electrically isolates the emitter segment from the photosensor segment. The LED die includes first electrodes configured to provide power to energize the emitter segment. The LED die includes second electrodes configured to send the current to the detector circuit. The detector circuit is configured to convert the current to a signal which provides operational feedback with respect to the emitter segment.

Light emitting diodes with sensor segment for operational feedback

In some embodiments of the invention, a device includes a semiconductor light emitting device having a first light extraction surface, a wavelength converting element, and a second light extraction surface. A majority of light extracted from the semiconductor light emitting device is extracted from the first light extraction surface. The first light extraction surface has a first area. The second light extraction surface is disposed over the first light extraction surface and has a second area. The first area is larger than the second area.

Wavelength converted semiconductor light emitting device

Growing community of inventors

Los Altos, CA, United States of America

Kenneth John Vampola