Abstract: In one embodiment, a fluid transfer component for transferring thermal energy comprises a film comprising a polymer with a thickness less than 5 millimeters, an input side constructed to receive fluid that flows from the input side to an active region of the film, more than 20 fluid channels defined by interior surfaces within the film, each fluid channel separated spatially in at least 1 row in a thickness direction of the film, the more than 20 fluid channels have a channel density across the active region greater than 5 fluid channels per centimeter, wherein the thermal energy is transferred to or from an environment and the fluid in the active region. The film may be an extruded microcapillary film or interior surfaces may comprise a surface modified to produce a surface relief profile. The active region may cool or warm the environment, which may comprise an individual.

Abstract: In one embodiment, a light emitting system comprises an angularly varying light emitting device (AVLED) comprising one or more light sources, the AVLED operable to individually adjust light flux output from the one or more light sources into different angular bins in the environment; and a light sensor positioned to receive light from the environment, wherein light from the angularly varying light emitting device is cycled to emit light flux into different angular bins at different time periods, the light sensor is synchronized to capture first information related to light from the light flux reflected from the environment at the different time periods, and the angularly varying light emitting device adjusts the light flux output in different angular bins based on analysis of the first information received by the light sensor. The light sensor may be an imager and the AVLED may comprise a micro-LED array.

Abstract: In some aspects, a display comprises a reflective spatial light modulator, a light source, and a film-based lightguide having an array of coupling lightguides in a form of strips of the film extending from and continuous with a lightguide region of the film. The coupling lightguides are folded and stacked behind the reflective spatial light modulator along fold lines oriented at different orientation angles. In some embodiments, the coupling lightguides comprise lateral edges with curved portions. In some embodiments, the coupling lightguides are tapered. In some embodiments, the reflective spatial light modulator comprises an active area in a shape of a polygon with more than four sides or an active area defined by a boundary with a circular, semi-circular, or arcuate portion.

Abstract: In one embodiment, a display comprises a light source positioned to emit light into a 0.5 millimeter thick lightguide with light extraction features, a cladding layer optically coupled to a core layer of the lightguide on a first side, a light turning film optically coupled to the cladding layer on an opposite side, the light turning film comprising a light turning features that redirect frustrated totally internally reflected light from the core layer into a first portion of light with a first peak luminous intensity at a first angle and a second portion of light with a second peak luminous intensity at a second angle different from the first angle and on an opposite side of the thickness direction, and the light diffusely reflecting from a reflective spatial light modulator has a peak luminous intensity within degrees from a direction normal to a surface of the display.

Abstract: A method of manufacturing a display includes coupling light from at least one light source into a front illumination film-based lightguide comprising a pressure sensitive adhesive layer between a core polymer film layer and a diffusely reflective release liner such that light from the at least one light source propagates by total internal reflection through the core polymer film layer, is extracted from the core polymer film layer, passes through the pressure sensitive adhesive layer, diffusely reflects from the diffusely reflective release liner and passes back through the pressure sensitive adhesive layer and core polymer film layer out of the front illumination film-based lightguide; analyzing the light exiting front illumination film-based lightguide from the at least one light source for defects; removing the diffusely reflective release liner from the front illumination film-based lightguide after analyzing; and laminating the front illumination film-based lightguide to a reflective spatial light modula

Abstract: In one aspect, a film-based lightguide includes a film with a light emitting region, a plurality of coupling lightguides in a form of an array of strips extended from the body of the film and folded along a fold line, a light mixing region of the film positioned along the film between the plurality of coupling lightguides and the light emitting region, and an extended coupling lightguide region of the coupling lightguides between the fold line and the light mixing region where the plurality of coupling lightguides are not folded. For one or more of the plurality of coupling lightguides, a length along a coupling lightguide between the fold line and a light input end of the coupling lightguide is less than a length of the coupling lightguide in the extended coupling lightguide region.

Abstract: In one embodiment, a fluid transfer film for transferring a fluid comprises an extruded polymer layer having a thickness less than 5 millimeters; an input side and an output side where the fluid flows in a flow direction through an active region from the input side to the output side; and more than 10 fluid channels defined by interior surfaces within the extruded polymer layer formed during in an extrusion process, each fluid channel of the more than 10 fluid channels is separated spatially in at least 1 row in a thickness direction of the fluid transfer film, the more than 10 fluid channels have a channel density across the active region greater than 5 fluid channels per centimeter, wherein the interior surfaces defining the more than 10 fluid channels are hydrophilic, and the fluid flows through the more than 10 fluid channels by at least capillary action.

Abstract: In one embodiment, a display comprises a reflective spatial light modulator, an angularly varying diffusion film that that transmits and scatters light incident within a first angular range and transmits light un-deviated incident within a second angular range outside of the first angular range, and a frontlight comprising a light source positioned to emit light into a film with a light emitting region positioned between the reflective spatial light modulator and the varying angle diffusion film. In one embodiment light extracted in the light emitting region is incident on a spatial light modulating layer at an angle of peak luminous intensity less than 30 degrees in a second layer from the surface normal of the spatial light modulating layer, reflects from the reflective spatial light modulator, passes through the film, is scattered by the angularly varying diffusion film, and exits the display.

Abstract: A device comprises a film with an adhesive layer on a first side of a core layer, a major sheet area of the film bounded by edges of the film with a light extracting region positioned to receive and extract light propagating by total internal reflection within the core layer out of the major sheet area, and a minor sheet between the major sheet area and an array of strips. The strips extend from the minor sheet area of the film, and each strip of the array of strips is folded within a fold region and stacked. The device further comprises a component extending a width of the array of strips where they extend from the minor sheet area, wherein the adhesive layer adheres the component to the film between fold region and the light extracting region. In some embodiments, the adhesive layer is a cladding layer.

Abstract: In one aspect, a film-based lightguide includes a film comprising a light emitting region defined by a plurality of light extracting features, a plurality of coupling lightguide strips extending from the lightguide region of the film, wherein the light mixing region of the film is positioned along the film between the plurality of coupling lightguide strips and the light emitting region, the light mixing region comprises a plurality of interior light directing edges positioned between the lateral edges of the body of the film, wherein the interior light directing edges totally internally reflect light propagating in the light mixing region and redistribute light flux propagating within the lightguide region. In one aspect, pairs of the plurality of interior light directing edges define a plurality of channels that totally internally reflect light propagating therein and are tapered outward toward the light emitting region.

Abstract: In one embodiment, a light emitting system comprises an angularly varying light emitting device (AVLED) comprising one or more light sources, the AVLED operable to individually adjust light flux output from the one or more light sources into different angular bins in the environment; and a light sensor positioned to receive light from the environment, wherein light from the angularly varying light emitting device is cycled to emit light flux into different angular bins at different time periods, the light sensor is synchronized to capture first information related to light from the light flux reflected from the environment at the different time periods, and the angularly varying light emitting device adjusts the light flux output in different angular bins based on analysis of the first information received by the light sensor. The light sensor may be an imager and the AVLED may comprise a micro-LED array.

Abstract: A display comprises a reflective spatial light modulator having an active area, a plurality of lightguides stacked above the active area with one or more cladding or adhesive layers therebetween, and a light source positioned behind the reflective spatial light modulator to emit light that propagates into the plurality of lightguides such that it totally internally reflects within each lightguide of the plurality of lightguides, is extracted from each lightguide, and illuminates the active area, wherein each lightguide is folded at a first fold. In one embodiment a light mixing region of the plurality of lightguides comprises the first fold. In another embodiment, each lightguide comprises an array of coupling lightguides folded at the first fold such that they are stacked with their bounding edges positioned to receive the light from the light source.

Abstract: A film-based lightguide comprises a major sheet area comprising a light extracting region and a minor sheet area positioned between the major sheet area and an array of strips extended from the minor sheet area. Each strip of the array of strips is bent and stacked such that stacked ends of the array of strips define an input surface. The lightguide further comprises a bend in the minor sheet area that positions the array of strips behind the major sheet area in a thickness direction of the film in the major sheet area. In one embodiment, the bend in the minor sheet area bends the film by an angle of 180 degrees. In another embodiment, the bend in the minor sheet area positions the light input surface behind the major sheet area in the thickness direction of the film in the major sheet area.

Abstract: In one embodiment, a method of illuminating an environment comprises angular cycling angular light flux output from light sources in angular bins of an angularly varying light emitting device, capturing using an imager a plurality of images of the environment synchronized with the light sources, determining a light property of one or more spatial zones associated with the angular bins, and adjusting the light flux output from one or more light sources based on the light properties. In one embodiment, the light emitting device comprises a micro-LED array comprising the plurality of light sources and/or the imager. In one embodiment, the light flux output is adjusted to achieve a target illuminance in one or more spatial zones. In one embodiment, the angular widths in theta and phi spherical coordinates of the angular bins are less than 2 degrees.

Abstract: In one aspect, a light emitting device comprises a lightguide formed from a film with a glass core layer and a thickness less than 0.5 millimeters, a plurality of strips extending from a lightguide region forming a light input surface, a light emitting region, and a light source positioned to emit light into the light input surface. In one embodiment, the light emitting device comprises a cladding layer optically coupled to the glass core layer. In one embodiment, a largest dimension of the light emitting region in a plane comprising the light emitting region divided by an average thickness of the glass core layer in the light emitting region is greater than 500. The light source may comprise a peak wavelength between 350 nanometers and 400 nanometers or between 800 nanometers and 1200 nanometers. The glass core layer may be a borosilicate glass.

Abstract: A film-based lightguide comprises a major sheet area comprising a light extracting region and a minor sheet area positioned between the major sheet area and an array of strips extended from the minor sheet area. Each strip of the array of strips is bent and stacked such that stacked ends of the array of strips define an input surface. The lightguide further comprises a bend in the minor sheet area that positions the array of strips behind the major sheet area in a thickness direction of the film in the major sheet area. In one embodiment, the bend in the minor sheet area bends the film by an angle of 180 degrees. In another embodiment, the bend in the minor sheet area positions the light input surface behind the major sheet area in the thickness direction of the film in the major sheet area.

Abstract: In one aspect, a light emitting device comprises a lightguide formed from a film with a glass core layer and a thickness less than 0.5 millimeters, a plurality of strips extending from a lightguide region forming a light input surface, a light emitting region, and a light source positioned to emit light into the light input surface. In one embodiment, the light emitting device comprises a cladding layer optically coupled to the glass core layer. In one embodiment, a largest dimension of the light emitting region in a plane comprising the light emitting region divided by an average thickness of the glass core layer in the light emitting region is greater than 500. The light source may comprise a peak wavelength between 350 nanometers and 400 nanometers or between 800 nanometers and 1200 nanometers. The glass core layer may be a borosilicate glass.

Abstract: A light emitting device disclosed herein includes a light source and component thermally coupled to the component. The device further includes a lightguide formed from a film. The lightguide includes an array of strips extending from an area of the film. The array of strips is positioned adjacent the array of protruding teeth, the component thermally conducts heat from the light source, and the component at least partially restrains the film relative to the component.

Abstract: In one aspect, a light emitting device comprises a lightguide formed from a film, a plurality of strips of the film extended from a lightguide region of the film, each strip is folded and stacked such that the strips of the plurality of strips are parallel to each other and ends of the strips of the plurality of strips define a light input surface, light extraction features defining a light emitting region of the film, and at least one light source emitting light into the light input surface, the light propagating through the strips and the lightguide region by total internal reflection where it is directed by the light extraction features to emit a first light flux and the light from the at least one light source has an average light flux density in a cross-section of the light emitting region of the film greater than 100 lumens per square millimeter.

Abstract: In one embodiment, a device comprises a fluid transfer component having an average thickness less than 2 millimeters and comprising a polymer film with one or more polymeric materials in one or more layers; and an active region of the fluid transfer component comprising a surface area greater than 1 square meter and plurality of fluid channels defined by one or more interior surfaces within the polymeric film, each fluid channel of the plurality of fluid channels is separated spatially with the plurality of fluid channels comprising at least 1 row of fluid channels in a thickness direction of the polymeric film, wherein the plurality of fluid channels has a channel density across the active region of the fluid transfer component greater than 100 fluid channels per centimeter and the plurality of fluid channels collects a first fluid across the active region from the environment.