Abstract: The present disclosure relates to metrology measurement systems, and related methods. In one or more embodiments a system, includes a substrate support, and an optical arm. The optical arm includes a light source operable to project a first beam on a first light path. The optical arm also includes a first lens, a first beam splitter, a second lens, a first detector, and an aperture. The first lens is disposed on the first light path and between the substrate support and the light source. The first beam splitter is disposed on the first light path. The first beam splitter is positioned between the substrate support and the light source. The first detector is disposed on the second light path. The second lens focuses the second beam to a second beam diameter. The aperture is disposed between the second lens and the first detector.

Abstract: Embodiments described herein relate to an optical device metrology system including a light source to emit a light and a non-polarizing beam splitter to split the light into a first photodetector light path and an optical light path. A first photodetector is disposed in the first photodetector light path and measures a total power of the light. The optical device substrate is disposed in the optical light path and splits the light into a second and a third photodetector light path. A second photodetector is disposed in the second photodetector light path from the optical device substrate. The second photodetector measures a reflected power of the light. A third photodetector is disposed in the third photodetector light path. The third photodetector measures a transmitted power of the light. The controller receives measurements from the first, second, and third photodetectors to calculate a percentage light loss within the optical device substrate.

Abstract: Embodiments described herein relate to waveguide combiners having arrangements for image uniformity. The waveguide combiners includes an input coupling grating (ICG) defined by a plurality of input structures, a pupil expansion grating (PEG) defined by a plurality of expansion structures, an output coupling grating (OCG) defined by a plurality of output structures The waveguide combiners includes at least one of a pixelated phase modulator is aligned with the PEG of the first side of the waveguide combiners, at least one of a Y expander and an X expander disposed on a second side of the waveguide combiners opposing the first side, or a pupil shifting mechanism operable to shift incident beams of light between a first position and a second position of the ICG.

Abstract: The examples relate to various implementations of a software configurable lighting device, having an enhance display device that is able to generate light sufficient to provide general illumination of a space in which the lighting device is installed and provide an image display. The general illumination is provided by additional light sources and/or improved display components of the enhanced display device.

Abstract: The examples relate to various implementations of a software configurable lighting device having a multi-processor system including a central processing unit and a parallel processing unit. The software configurable lighting device utilizes the multi-processor system to efficiently transform and/or modify control data. The software configurable lighting device also includes a transparent image display device and a general illumination device. Transformed and/or modified control data is utilized to drive the transparent image display device and the general illumination device in combination.

Abstract: The examples relate to various implementations of a software configurable lighting device having a multi-processor system including a central processing unit and a parallel processing unit. The software configurable lighting device utilizes the multi-processor system to efficiently transform and/or modify control data. The software configurable lighting device also includes a transparent image display device and a general illumination device. Transformed and/or modified control data is utilized to drive the transparent image display device and the general illumination device in combination.

Abstract: The examples relate to various implementations of a software configurable lighting device, having an enhance display device that is able to generate light sufficient to provide general illumination of a space in which the lighting device is installed and provide an image display. The general illumination is provided by additional light sources and/or improved display components of the enhanced display device.

Abstract: The examples relate to various implementations of a software configurable lighting device, having an enhance display device that is able to generate light sufficient to provide general illumination of a space in which the lighting device is installed and provide an image display. The general illumination is provided by additional light sources and/or improved display components of the enhanced display device.

Abstract: A liquid crystal device includes a first polarization grating, a second polarization grating, and a liquid crystal layer. The first polarization grating is configured to polarize and diffract incident light into first and second beams having different polarizations and different directions of propagation relative to that of the incident light. The liquid crystal layer is configured to receive the first and second beams from the first polarization grating. The liquid crystal layer is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams traveling therethrough, and a second state that alters the respective polarizations of the first and second beams traveling therethrough. The second polarization grating is configured to analyze and diffract the first and second beams from the liquid crystal layer to alter the different directions of propagation thereof in response to the state of the liquid crystal layer.

Abstract: A liquid crystal device includes a first polarization grating, a second polarization grating, and a liquid crystal layer. The first polarization grating is configured to polarize and diffract incident light into first and second beams having different polarizations and different directions of propagation relative to that of the incident light. The liquid crystal layer is configured to receive the first and second beams from the first polarization grating. The liquid crystal layer is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams traveling therethrough, and a second state that alters the respective polarizations of the first and second beams traveling therethrough. The second polarization grating is configured to analyze and diffract the first and second beams from the liquid crystal layer to alter the different directions of propagation thereof in response to the state of the liquid crystal layer.

Abstract: A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough.

Abstract: An optical element includes a first and second stacked birefringent layers. The first birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a first thickness between opposing faces of the first birefringent layer to define a first twist angle. The second birefringent layer includes local anisotropy patterns having respective relative orientations that vary over a second thickness between opposing faces of the second birefringent layer to define a second twist angle different than the first twist angle. Related devices and fabrication methods are also discussed.

Abstract: A polarization grating includes a substrate and a first polarization grating layer on the substrate. The first polarization grating layer includes a molecular structure that is twisted according to a first twist sense over a first thickness defined between opposing faces of the first polarization grating layer. Some embodiments may include a second polarization grating layer on the first polarization grating layer. The second polarization grating layer includes a molecular structure that is twisted according to a second twist sense that is opposite the first twist sense over a second thickness defined between opposing faces of the second polarization grating layer. Also, a switchable polarization grating includes a liquid crystal layer between first and second substrates.

Abstract: A liquid crystal device includes a first polarization grating (101), a second polarization grating (102), and a liquid crystal layer (103). The first polarization grating (101) is configured to polarize and diffract incident light (190) into first and second beams (195,196) having different polarizations and different directions of propagation relative to that of the incident light (190). The liquid crystal layer (103) is configured to receive the first and second beams (195,196) from the first polarization grating (101). The liquid crystal layer (103) is configured to be switched between a first state that does not substantially affect respective polarizations of the first and second beams (195,196) traveling therethrough, and a second state that alters the respective polarizations of the first and second beams (195,196) traveling therethrough.

Abstract: A polarization grating includes a substrate and a first polarization grating layer on the substrate. The first polarization grating layer includes a molecular structure that is twisted according to a first twist sense over a first thickness defined between opposing faces of the first polarization grating layer. Some embodiments may include a second polarization grating layer on the first polarization grating layer. The second polarization grating layer includes a molecular structure that is twisted according to a second twist sense that is opposite the first twist sense over a second thickness defined between opposing faces of the second polarization grating layer. Also, a switchable polarization grating includes a liquid crystal layer between first and second substrates.