Abstract:
In example embodiments, an optical system includes a waveguide having a first surface and a second surface substantially opposite the first surface. A reflective diffractive in-coupler is provided in the waveguide between the first and second surfaces for coupling blue light. A first transmissive diffractive in-coupler is provided in the waveguide between the reflective diffractive in-coupler and the second surface for coupling red light. Some embodiments further include a second transmissive diffractive in-coupler on the first surface for coupling blue light at high incident angles. Green light may be coupled by one or more of the in-couplers. The waveguide may further be provided with corresponding diffractive out-couplers for use in a waveguide display system.
Abstract:
As an electro-optical device, a liquid crystal device includes micro lenses ML each of which is provided as a light-gathering element for the corresponding one of pixels, and further includes a light-shielding portion. Red (R), green (G), and blue (B) beams enter the micro lens ML at angles different from one another. The light-shielding portion partitions off a first opening portion corresponding to a sub pixel, a second opening portion corresponding to a sub pixel, and a third opening portion corresponding to a sub pixel from one another. When the width of the first opening portion in the predetermined direction (X direction) is defined as L1 and when the width of the second opening portion or the third opening portion in the predetermined direction is defined as L2, a relationship of L1
Abstract:
A projector includes a light source, liquid crystal panels that modulate light emitted from the light source, a dichroic prism that combines modulated light fluxes modulated by the liquid crystal panels with one another into video light and outputs the video light, and a pixel shift device that changes the optical path of the video light output from the dichroic prism. The pixel shift device includes a glass plate on which the video light is incident and an electromagnetic actuator that causes the glass plate to swing. The electromagnetic actuator is arranged in a position outside the dichroic prism and different from the positions of the liquid crystal panels when viewed along the optical axis of the video light.
Abstract:
An anti-reflective thin film coating formed on an optical surface, comprising a multilayer thin-film stack arranged to suppress reflection of incident polarized light within an incident light wavelength range. The multilayer thin-film stack further provides a reflectance edge transition at a wavelength band that lies outside the incident light wavelength range. The reflectance edge transition is arranged to provide phase difference compensation to the polarized light within the incident polarized light wavelength range.
Abstract:
An image generating device includes a first light source, a light conversion element, and an image generating element. The first light source is for generating light with a first wavelength. The light conversion element is disposed on a light path of the light with the first wavelength. The light conversion element includes a first quantum dot layer for converting light with wavelengths under a second wavelength to light with the second wavelength, and a second quantum dot layer for converting light with wavelengths under a third wavelength to light with the third wavelength. The first wavelength is smaller than the second wavelength, and the second wavelength is smaller than the third wavelength. The image generating element is for generating images according to light transmitted from the light conversion element.
Abstract:
An image generating device includes a light source, a light filtering element, a light conversion element, and an image generating element. The light source is for generating visible light. The light filtering element is disposed on a light path of the visible light. The light filtering element includes a plurality of light filtering blocks, and each of the light filtering blocks is for allowing light with wavelength within a predetermined range to pass through. The light conversion element is disposed on the light path. The light conversion element includes a first quantum dot layer for converting light with wavelength below a first wavelength to light with the first wavelength. The image generating element is for generating images according to light passed through the light filtering element and the light conversion element.
Abstract:
An image forming system is described that includes a light source that provides a light beam and an anamorphic refractive optical element. A first outer surface of the anamorphic element faces the light source and includes a toric surface. The light beam is incident upon the first outer face and then an incident surface of the anamorphic element. The anamorphic element directs the light beam to an image forming device. An illumination system is also described where an anamorphic element includes a toric surface and a facet surface.
Abstract:
An illumination unit includes a plurality of light sources each including a solid-state light-emitting device configured to emit light from a light emission region including a single or a plurality of light-emitting spots. The solid-state light-emitting device includes a single chip or a plurality of chips each emitting light beam. Three or more of the light-emitting spots are provided within the whole light sources, to allow the whole light sources to emit light beams in two or more wavelength bands different from one another. Two or more of the plurality of the light sources include respective light-emitting spots which emit light in the same wavelength band.
Abstract:
A composite optical-dividing component receives a light beam. There are mixed-bands in the light beam. The composite optical-dividing component includes a first optical-patch and a second optical-patch. The first optical-patch has multiple micro-structural lenses in an identical shape. Each micro-structural lens receives the light beam and generates a deflecting light in some degrees of condense. The second optical patch has multiple polygonal structures. Some polygonal structures are periodic and provide the function of deflection in order to receive the deflecting light and then separate multiple bands from the beam. In accordance with wavelengths in multiple bands, the bands are emitted to a target area (RGB) in a plane, respectively. Another part of the polygonal structures has the capability of light refraction, which receives the deflecting light and deflects and the rest of the bands in the beam. And it is emitted to a target area (W) in a plane.
Abstract:
A system for optical color division receives an incident light from a side and divides the incident light into a plurality of color lights. The system includes a light guide plate for allowing the incident light to have total internal reflection back and forth therein. A surface of the light guide plate has a plurality of microstructures, which can destroy the total internal reflection and enable the light to exit.