A lighting system comprises a light source for providing a light beam of directed non-diffused light with a first correlated color temperature along a main light beam direction; and a lamp shade-like structure comprising a bottom unit to be illuminated from the light source at one side and a screen structure provided at an opposite side, the bottom unit and the screen structure defining a light passage. The bottom unit comprises a diffused light generator for generating diffused light at a second correlated color temperature, which is larger than the first correlated color temperature, is at least partially transparent for the directed non-diffused light of the light beam, and is configured such that at least a divergent light beam portion of the light beam enters the light passage; and the screen structure is spatially oriented with respect to the main light beam direction of the divergent light beam portion.

An optical transmittance adjustment device including a light guide plate and an optical transmittance adjustment film is provided. The light guide plate has a first surface and a second surface, wherein the second surface is opposite to the first surface and has a plurality of light scattering microstructures. The optical transmittance adjustment film is located at a side of the light guide plate, and the light scattering microstructures are located between the optical transmittance adjustment film and the light guide plate.

There is provided an optical body with improved antireflection capability, a display device, and a method for manufacturing an optical body, the optical body including: a first concave-convex structure formed on a surface of a base material; and a second concave-convex structure superimposed on the first concave-convex structure. An average concave-convex period of the first concave-convex structure is larger than a wavelength in a visible light region, an average concave-convex period of the second concave-convex structure is less than or equal to the wavelength in the visible light region, and projecting parts of the second concave-convex structure extend in a direction normal to a flat plane of the base material.

A light beam emission system includes a blower that forms a flow path in which aerosol flows, an emitter that emits a laser beam, and a light guide that guides the laser beam to the flow path in which the aerosol flows. The light guide is hollow, and at least a part of the laser beam passing through the light guide and guided to the flow path propagates along the flow path of the aerosol.

Examples relate to a method and implementations of general illumination light emitters, an image display device and an image diffuser in a luminaire. The image display device is configured to output an image having a reduced, or first, pixel image fill factor and, as a result, might appear pixelated. To mitigate the pixelation, the image diffuser has a predetermined image diffusion angle and is a predetermined distance from the image display device. The image diffuser outputs an image having a second image pixel fill factor that is greater than the first image pixel fill factor. The appearance of the outputted image appears to be formed from fuzzy pixels. Characteristics related to the image, device, diffuser, and their arrangement may be optimized to provide the fuzzy pixels. A luminaire may output an image formed of the fuzzy pixels and general illumination lighting to an area.

A theatre light projector including a housing, a plurality of light sources, a first aperture device and a lens system. The lens system may include a first lens sector and a second lens sector, each of which may have a positive spherical optical power. The first lens sector may have a first radii, and the second lens sector may have a second radii, wherein the first radii and the second radii are substantially parallel to each other. The first aperture device may be comprised of a first aperture comprised of a color filter and/or a pattern. The plurality of light sources may be comprised of a first light source and a second light source and each may be comprised of a white solid state light source, which may be a light emitting diode. The white solid state light source may be a laser diode.

The light device, especially a signal lamp for motor vehicles, comprises a translucent front cover (1), a lighting unit (4) with at least one source (41) for emitting of light rays, and an optical element (11) that is adapted for diffusing and/or directing and/or changing the color spectrum of light rays. The optical element (11) is fixed to the cover (1) and the lighting unit (4) is, with the use of a connecting means (6), connected to the cover (1) and/or to at least one projection (1d) the cover (1) is fitted with.

An optical head for receiving an incident light is provided. The optical head comprises a reflective diffuser and a reflector disposed to face the reflective diffuser. The reflective diffuser is disposed in an optical path of the incident light and shields the reflector from the incident light. The reflective diffuser converts the incident light to scattered light having a Lambertian pattern. The reflector has an optical output section that transmits the scattered light and a reflective section that reflects the scattered light to the reflective diffuser and/or the other portions of the reflective sections. An optical system using the optical head is also provided.

A stereo display device includes a light source module, an image determining array, an imaging module, and a spatial dividing element. The light source module sequentially emits first and second lights to target regions in different directions. The image determining array includes pixel units respectively disposed in the target regions, and each of the pixel units sequentially provides first and second information to the first and second lights respectively. The imaging module guides the first light having the first information to form first imaging units, and guides the second light having the second information to form second imaging units. The spatial dividing element sends the first image units to first viewing regions respectively and sends the second image units to second viewing regions respectively, and two of the first image units corresponding to adjacent two of the pixel units are transmitted to the first viewing regions in different directions.

Examples relate to a method and implementations of general illumination light emitters, an image display device and an image diffuser in a luminaire. The image display device is configured to output an image having a reduced, or first, pixel image fill factor and, as a result, might appear pixelated. To mitigate the pixelation, the image diffuser has a predetermined image diffusion angle and is a predetermined distance from the image display device. The image diffuser outputs an image having a second image pixel fill factor that is greater than the first image pixel fill factor. The appearance of the outputted image appears to be formed from fuzzy pixels. Characteristics related to the image, device, diffuser, and their arrangement may be optimized to provide the fuzzy pixels. A luminaire may output an image formed of the fuzzy pixels and general illumination lighting to an area.