The present disclosure relates to a method for producing an optical element, for example a lens, for example a headlight lens, for example for vehicle headlights or motor vehicle headlights, wherein an optical component part having an (optically effective) convex surface made of a first transparent optical material is provided and/or produced; a mold having a concave cavity and optical material is provided and/or produced; liquid transparent second optical material is placed into the concave cavity of the mold; and the optical component part having the convexly curved surface is pressed into the concave cavity of the mold such that an optically effective coating is formed on the convexly curved surface.

Article (9,19) comprising a substrate (10, 20) comprising a polymer and having first (11,21) and second (12, 22) opposed major surfaces. The first major surface (11, 21) has first surface regions (13, 23) with first nanoparticles (14a, 14b, 14c, 14d, 24a, 24b, 24c, 24d) partially embedded into the first major surface (11, 21), and one of •(a) second surface regions (15) free of nanoparticles; or •(b) second surface regions (25) with at least second nanoparticles (28) on the first major surface (11, 21) or partially embedded into the first major surface (11, 21). The first surface regions (13, 23) have a first average surface roughness, R.sub.a1, of at least 20 nm, wherein the second surface regions (15, 25) have a second average surface roughness, R.sub.a2, of less than 100 nm, wherein the first average surface roughness, R.sub.a1, is greater than the second average surface roughness, R.sub.a2, and wherein there is an absolute difference between the first and second average surface roughness of at least 10 nm.

An apparatus and method for manufacturing phase masks for lens-less camera comprises: a light source; a digital image mirror that receives a two-dimensional map, reflects the light irradiated from the light source with different intensities for each location and outputs reflected light; a two-dimensional map generator for generating the 2D map for adjusting the intensity of reflected light for each position such that the phase mask has a unique pattern of a different height for each position from a point spread function acquired in advance depending on the purpose of use of the phase mask; and a material holder on which a photo-curable film is disposed that is irradiated with the reflected light and cured to different depths depending on the light intensity for each position of the irradiated reflected light.

An optical component includes a light guide board. The light guide board can include an incident surface, an underside, and an exit surface. The incident surface is connected to the underside and the exit surface, respectively. The underside is parallel to the exit surface. Further, the exit surface includes a prism structure for refracting light in the light guide board.

A light-diffusing layer is provided for diffusing incident light by diffracting at least a portion of the incident light, and the diffuse light diffused by the light-diffusing layer is diffused about a direction different from the emission direction of non-diffused light that passes through the light-diffusing layer without being diffused.

An illumination unit includes a light guide and a light converter. Wettability which a distal end side surface of the light guide has for an enclosing member of the light converter is lower than wettability which a distal end face has for the enclosing member.

It is an object of the present invention to provide a light diffusing lens production apparatus which makes it possible to efficiently produce a high-quality light diffusing lens having enhanced optical properties.

The light diffusing lens production apparatus includes: a pair of molds 15, consisting of a fixed mold 16 and a movable mold 18, which forms a final molded product cavity 22 that defines the shape of a light diffusing lens 14; a mold clamping apparatus 62 in which the pair of molds 15 is attached; a transport device 66, having a chuck means capable of entering and exiting the space between the pair of molds 15 in an open state, which inserts a semifinished molded product 12 for the light diffusing lens 14 into the final molded product cavity 22; a heating device 68, having a heating means capable of entering and exiting the space between the pair of molds 15 in an open state, which heats the fixed mold 16-facing surface of the inserted semifinished molded product until the surface becomes a molten state; and an injection apparatus 64 which, after clamping of the pair of molds 15, injects a molding material into the final molded product cavity 22 so that the molding material covers the molten surface of the semifinished molded product 12.

A light diffusion plate is configured to be assembled with a blue light source module having blue Mini LEDs to form a white light backlight module. The light diffusion plate is added with organic dyes with light-emission wavelength of 490-650 nm in order to convert the blue light into white light. The light diffusion plate is made by a foaming extrusion process and contains a plurality of micro-bubbles with a size of 60-400 μm and a weight-reduction ratio of 15-25% for improving the uniformity of white light and resolving the MURA problem. The size of micro-bubbles is controlled by reducing the temperature of at the exit end of the T-die head, such that the wavelength of the white light emitted from the light diffusion plate can be narrower to achieve the effect of wider color gamut display.

The present invention provides a method for producing a light guide plate including a light-diffusing surface. The method includes (1) applying a protonic polar solvent to a surface of a polycarbonate substrate, and (2) heating the polycarbonate substrate in a water-containing environment to cause precipitation of bisphenol A particles each having a particle size of 10 μm or smaller on the surface of the polycarbonate substrate.

The present invention relates to a lighting device for vehicles including at least one diffuser body suitable for receiving light emitted by a light source so as to diffuse the light externally to the body. The diffuser body includes a solid matrix of transparent polymer material which incorporates a plurality of bubbles or cavities, wherein the solid matrix performs the transmission of light within the body by subsequent reflections and wherein the bubbles perform the diffusion of light and the extraction thereof outside the body by subsequent refractions.