Philips Lumileds Lighting Company LLC

Koninklijke Philips Corporation N.v.

Google Inc.

Lumileds LLC

X Development LLC

Optical Coating Laboratory, Inc.

Koninklijke Philips Electronics N.v.

Signify Holding B.v.

Philips Lighting Holding B.v.

Lumileds Holding B.v.

Signify North America Corporation

Philips Lighting North America Corporation

Eng, Gregory W.

Bierhuizen, Serge J.

Serge J Bierhuizen

Gerard Harbers

Jerome Carollo

Oleg Borisovich Shchekin

Oscar A Martinez

Mark Melvin Butterworth

John Edward Epler

Adam Eales Norton

Hayes Solos Raffle

Michael Ragan Krames

Aurelien J F David

Gregory W Eng

Xinda Hu

Yi Qin

Andrei Stefan Kazmierski

Mark A Pugh

James Gordon Neff

Decai Sun

Gerd O Mueller

Yajun Wei

Nanze Patrick Wang

Willem Sillevis Smitt

Mary Lou Jepsen

Philip Edwin Watson

Regina B Mueller-Mach

John D Perreault

Rafael Ignacio Aldaz

Andrew Thomas Taylor

Nicholas Charles Loomis

Belle Fu

Takaaki Yagi

Kalil Kalantar

Edwin De Groot

Paul J Gasloli

Johannes W H S Smitt

Marcus J H Kessels

Aurelien J David

James G Neff

Gregrory W Eng

Jr Jonathan J Wierer

Richard J Weiss

Marcus JH Kessels

Optical assemblies for use in virtual and augmented reality environments are described. The optical assemblies may include lenses, filter stacks, cameras, and image projecting devices. For example, the optical assemblies may include at least one lens, a first filter stack between the at least one lens and an image projecting device, a second filter stack between the first filter stack and the image projecting device, and a camera configured to capture images of an infrared reflection of light through the at least one lens.

Compact eye tracking using folded display optics

Systems and apparatus are described for a head-mounted display apparatus comprising at least one optical assembly. Each optical assembly may include a first curved lens including a first surface and a second surface, a second curved lens including a third surface and a fourth surface, the third surface being concave and including a beam splitter layer, the second curved lens being disposed between the first curved lens and an input filter assembly, and a display panel adapted to receive image content from an image projecting device and transmit the image content through the at least one optical assembly. The third surface of the second curved lens may have a radius of curvature that is larger than a radius of curvature of the second surface of the first curved lens.

Compact near-eye display optics for higher optical performance

A system includes an electronic display for emitting light toward an eye-ward side of the system. A beam splitter receives emitted light from the display. The beam splitter includes a polarization beam splitting (PBS) film and a mirror coating to generate two orthogonal polarization states with different optical paths thereby creating a first focal plane and a second focal plane at the eye-ward side of the system. At least one liquid crystal switch is positioned to receive light from the display in a light path between the display and the eye-ward side of the system.

Multi-focal catadioptric head mounted display with LC switch

A near-eye display system includes a polarization waveguide having an in-coupling interface disposed proximate to a first end and an out-coupling interface disposed proximate to an opposite second end. The polarization waveguide is configured to convey light incident at the in-coupling interface to the out-coupling interface by inducing multiple changes in a polarization state of the light as the light traverses the polarization waveguide. At least a subset of the changes in polarization state induce the light to reflect within the polarization waveguide without relying on total internal reflection (TIR).

Near-eye system having polarization waveguide

A near-eye display system includes an optical system facing a display panel. The optical system includes an input filter, and output filter, and a variable-power catadioptric lens assembly disposed between the input and output filters. The input and output filters are configured, along with the catadioptric lens assembly to fold a path of display light from the display panel to a user's eye. The catadioptric lens assembly includes two or more lens elements disposed along an optical axis, each lens element having at least one surface with a freeform curvature. One of the lens elements is configured to be laterally translated relative to the other lens elements so as to change an optical power of the catadioptric lens assembly.

Near-eye display system with polarization-based optical path folding and variable focus catadioptric lens assembly

A lens assembly has two opposing surfaces, each surface introducing field curvature in a direction opposite of the field curvature introduced by the opposing surface, and thus the field curvatures introduced by the two surfaces at least partially cancel each other out, resulting in a net field curvature that provides for a substantially flat image plane or for an image plane with a specified curvature. The lens assembly may be implemented as a lens with two opposing Fresnel surfaces so that the field curvature in one direction introduced by one of the Fresnel surfaces is at least partially canceled out by the field curvature in the opposite direction as introduced by an opposing Fresnel surface. Alternatively, the lens assembly may be implemented as a lens with a positive continuous aspheric surface facing the user's eye and an opposing Fresnel surface facing the display panel.

Optical field curvature control using multi-layer Fresnel lens in VR display

Systems and methods are described for receiving image content from an emissive display toward a first filter stack, the first filter stack adapted to be oriented in a first direction from an optical axis of a first lens, and toward the first lens, transmitting the image content through a curved lens parallel to the optical axis of the first lens, wherein the curved lens transmits a portion of the image content to at least one optical element and to a second filter stack, the second filter stack being adapted to be oriented in a second direction from the optical axis of the first lens, and receiving the portion from the second filter stack and providing at least some of the portion to the first lens for viewing by a user.

Systems and methods that employ a near-eye display system including an optical assembly are described. The optical assembly may include a head-mounted display device worn by a user in which the head-mounted display device adapted to house an image projecting device and an optical assembly. The optical assembly may include, for at least one eyepiece, a first flat filter stack operable to be oriented in a first direction. and a second flat filter stack operable to be oriented in a second direction. The near-eye display system assembly may also include a display panel adapted to receive image content from the image projecting device, wherein the display panel is adapted to be oriented in the second direction.

Compact near-eye display optics

A device according to embodiments of the invention includes a waveguide, typically formed from a first section of transparent material. A light source is disposed proximate a bottom surface of the waveguide. The light source comprises a semiconductor light emitting diode and a second section of transparent material disposed between the semiconductor light emitting diode and the waveguide. Sidewalls of the second section of transparent material are reflective. A surface to be illuminated is disposed proximate a top surface of the waveguide. In some embodiments, an edge of the waveguide is curved.

Lighting device with light sources positioned near the bottom surface of a waveguide

A head mounted display device includes a display panel and a lens assembly mounted so that an optical axis of the lens assembly intersects the display panel. The lens assembly includes a lens body having a surface facing the display panel and defining Fresnel prisms. A Fresnel prism of the Fresnel prisms has a first facet angle when viewed in a first cross-section and has a second facet angle when viewed in a second cross-section parallel to the first cross-section. The first facet angle is different than the second facet angle.

Fresnel lens assembly having varying facet angle

A multi-layer projection screen includes a stray light rejection layer and a lens array. The stray light rejection layer includes an array of pillar structures, wherein each pillar structure of the array of pillar structures includes an entrance aperture, an exit aperture, a pathway extending from the entrance aperture to the exit aperture, and a side wall surrounding the pathway. The lens array is optically aligned to the array of pillar structures. The stray light rejection layer blocks display light received from the lens array having an oblique trajectory that is greater than a threshold angle from a first trajectory.

High contrast projection screen with stray light rejection

An array of housings with housing bodies and lenses is molded, or an array of housing bodies is molded and bonded with lenses to form an array of housings with housing bodies and lenses. Light-emitting diodes (LEDs) are attached to the housings in the array. An array of metal pads may be bonded to the back of the array or insert molded with the housing array to form bond pads on the back of the housings. The array is singulated to form individual LED modules.

LED module with high index lens

A multi-layer projection screen includes a transparent substrate having first and second sides, a stray light rejection layer, and a lens array. The stray light rejection layer is disposed across the first side of the transparent substrate. The stray light rejection layer includes an array of pillar structures, wherein each pillar structure of the array of pillar structures includes an entrance aperture, an exit aperture, a substantially transparent pathway extending from the entrance aperture to the exit aperture, and an opaque side wall surrounding the transparent pathway. The lens array is disposed across the second side of the transparent substrate and optically aligned to the array of pillar structures. The stray light rejection layer blocks display light received from the lens array having an oblique trajectory that is greater than a threshold angle from a normal of the second side of the transparent substrate.

Growing community of inventors

Santa Rosa, CA, United States of America

Serge J Bierhuizen