Abstract: Semiconductor structures and methods are provided. An exemplary method includes depositing a first conductive material layer over a substrate, patterning the first conductive material layer to form a first conductor plate over the substrate, forming a first high-K dielectric layer over the first conductor plate, forming a second high-K dielectric layer on the first high-K dielectric layer, forming a third high-K dielectric layer on the second high-K dielectric layer, and forming a second conductor plate over the third high-K dielectric layer and vertically overlapped with the first conductor plate, where a composition of the first high-K dielectric layer is the same as a composition of the third high-K dielectric layer and is different from a composition of the second high-K dielectric layer.

Abstract: An optical device including a Vertical-Cavity Surface-Emitting Laser (VCSEL) light source and a lens array is provided. The VCSEL light source is configured to emit light with at least one light dot. The lens array is configured to receive light emitting from the VCSEL light source and then project a structured light. The structured light includes a dot pattern having number of light dots. Plural convex lenses are arranged along a first surface of the lens array. The convex lenses are configured to generate the light dots of the dot pattern.

Abstract: An illuminator including a light source and an optical device is provided. The light source is configured to emit light. The optical device is configured to provide uniform illumination with at least one indicating mark after receiving light. The optical device includes a diffusing part and a directing part. The diffusing part is configured to provide uniform illumination. The directing part is configured to provide at least one indicating mark.

Abstract: The present invention provides a projector, wherein the projector includes a light-emitting device, a lens module having a diffuser part and a lens part, and a DOE. In the operations of the projector, the light-emitting device is arranged for generating at least one laser beam, and the at least one laser beam passes through the diffuser part and the DOE to illuminate a field of view, and the at least one laser beam passes through the lens part and the DOE to generate a plurality of dots.

Abstract: The present invention provides a projector including a light-emitting device, a diffraction optical element (DOE) and a switchable diffuser. The light-emitting device is arranged for generating a laser beam. The switchable diffuser is controlled by a control signal to diffuse or scatter received lights or not diffuse or scatter the received lights, wherein the laser beam passes through the DOE and the switchable diffuser to generate an output image of the projector.

Abstract: An optical device including a Vertical-Cavity Surface-Emitting Laser (VCSEL) light source and a lens array is provided. The VCSEL light source is configured to emit light with at least one light dot. The lens array is configured to receive light emitting from the VCSEL light source and then project a structured light. The structured light includes a dot pattern having number of light dots. Plural convex lenses are arranged along a first surface of the lens array. The convex lenses are configured to generate the light dots of the dot pattern.

Abstract: An illuminator including a light source and an optical device is provided. The light source is configured to emit light. The optical device is configured to provide uniform illumination with at least one indicating mark after receiving light. The optical device includes a diffusing part and a directing part. The diffusing part is configured to provide uniform illumination. The directing part is configured to provide at least one indicating mark.

Abstract: The present invention provides a projector, wherein the projector includes a light-emitting device, a lens module having a diffuser part and a lens part, and a DOE. In the operations of the projector, the light-emitting device is arranged for generating at least one laser beam, and the at least one laser beam passes through the diffuser part and the DOE to illuminate a field of view, and the at least one laser beam passes through the lens part and the DOE to generate a plurality of dots.

Abstract: The present invention provides a projector including a light-emitting device, a diffraction optical element (DOE) and a switchable diffuser. The light-emitting device is arranged for generating a laser beam. The switchable diffuser is controlled by a control signal to diffuse or scatter received lights or not diffuse or scatter the received lights, wherein the laser beam passes through the DOE and the switchable diffuser to generate an output image of the projector.

Abstract: The present invention provides an electronic device, wherein the electronic device includes a projector and a controller. The projector includes a laser module and a lens module with a cover glass, wherein a laser beam generated from the laser module passes through the lens module to generate a projected image. The controller is coupled to the projector, and is arranged for determining if the cover glass is broken to generate a determination result, and controlling a power of the laser module according to the determination result.

Abstract: The present invention provides an electronic device, wherein the electronic device includes a projector and a controller. The projector includes a laser module and a lens module with a cover glass, wherein a laser beam generated from the laser module passes through the lens module to generate a projected image. The controller is coupled to the projector, and is arranged for determining if the cover glass is broken to generate a determination result, and controlling a power of the laser module according to the determination result.

Abstract: A wide-angle projection system includes a refraction unit and a reflection unit. The refraction unit includes a first lens group of positive refractive power and a second lens group of negative refractive power. The second lens group is disposed between the first lens group and the reflection unit and the condition: 0.9<A/B<1.4 is satisfied, where A denotes a distance along an optical axis of the wide-angle projection system and between the refraction unit and the reflection unit, and B denotes a total length of the refraction unit along the optical axis.

Abstract: A wide-angle projection system includes a refraction unit and a reflection unit. The refraction unit includes a first lens group of positive refractive power and a second lens group of negative refractive power. The second lens group is disposed between the first lens group and the reflection unit and the condition: 0.9<A/B<1.4 is satisfied, where A denotes a distance along an optical axis of the wide-angle projection system and between the refraction unit and the reflection unit, and B denotes a total length of the refraction unit along the optical axis.