Abstract: A backlighting device includes a light guide plate having a first side and a second side opposite to the first side, and a point light source to generate light incident on the first side of the light guide plate. The light guide plate has a plurality of longitudinal diffraction microstructures which are arranged and oriented according to the location of the point light source. The microstructures are varied gradually at least in size, position, density, or shape relative to the location of the point light source. When light is incident on the light guide plate from the point light source, the microstructures, which are varied gradually at least in size, position, density, or shape, function to regulate and adjust the illuminance of bright and dark areas in the light guide plate so as to provide uniform brightness.

Abstract: A backlighting device includes a light guide plate having a first side and a second side opposite to the first side, and a point light source to generate light incident on the first side of the light guide plate. The light guide plate has a plurality of longitudinal diffraction microstructures which are arranged and oriented according to the location of the point light source. The microstructures are varied gradually at least in size, position, density, or shape relative to the location of the point light source. When light is incident on the light guide plate from the point light source, the microstructures, which are varied gradually at least in size, position, density, or shape, function to regulate and adjust the illuminance of bright and dark areas in the light guide plate so as to provide uniform brightness.

Abstract: This invention provides a backlight device which includes at least: a photo conductive plate used for visible light to go through; a point light source, which is beside the photo conductive plate, used for producing visible light; a first diffusing top, which is beside the photo conductive plate, used for diffusing the visible light from the point light source to the lighting method of uniform line light source; a second diffusing top, which is on the bottom of the photo conductive plate, used for diffusing the visible light from the first diffusing top to the lighting method of uniform top light source; a diffusing reflect objective, which is below the photo conductive plate, used for diffusing the light and then reflecting the diffused light to the photo conductive plate.

Abstract: A process for producing an article with a microstructure includes the steps of forming a primary relief structure on a surface of a substrate, applying a photo resist on the substrate, exposing part of the photo resist using a photo mask so as to form a microstructure pattern, developing the microstructure pattern in the exposed photo resist, thereby allowing access to a part of the primary relief structure from the photo resist, and thereby forming a patterned surface with a microstructure relief that is bounded by the exposed part of the primary relief structure and by remainder of the photo resist on the substrate, and forming a metal layer on the patterned surface to form the article having the microstructure with a profile corresponding to the microstructure relief on the patterned surface.

Abstract: A process for producing an article with a microstructure includes the steps of forming a primary relief structure on a surface of a substrate, applying a photo resist on the substrate, exposing part of the photo resist using a photo mask so as to form a microstructure pattern, developing the microstructure pattern in the exposed photo resist, thereby allowing access to a part of the primary relief structure from the photo resist, and thereby forming a patterned surface with a microstructure relief that is bounded by the exposed part of the primary relief structure and by remainder of the photo resist on the substrate, and forming a metal layer on the patterned surface to form the article having the microstructure with a profile corresponding to the microstructure relief on the patterned surface.

Abstract: This invention provides a backlight device which includes at least: a photo conductive plate used for visible light to go through; a point light source, which is beside the photo conductive plate, used for producing visible light; a first diffusing top, which is beside the photo conductive plate, used for diffusing the visible light from the point light source to the lighting method of uniform line light source; a second diffusing top, which is on the bottom of the photo conductive plate, used for diffusing the visible light from the first diffusing top to the lighting method of uniform top light source; a diffusing reflect objective, which is below the photo conductive plate, used for diffusing the light and then reflecting the diffused light to the photo conductive plate.

Abstract: An optical element includes an optical body having a surface formed with a microstructure set which includes at least two microstructure relieves. At least one of the microstructure relieves has a configuration different from another one of the microstructure relieves. At least one of the microstructure relieves is defined by 3 to 5 faces.