Abstract: A directional light distributing optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first axis, and an included angle formed between the first axis and an optic axis is greater than ?15° and smaller than 15°. Thus, the light after passing the directional light distributing optical element forms a one-dimensional directional light.

Abstract: A color separation system is disclosed, which comprises: a backlight source, being highly collimated and used for providing an incident beam; a color separation module, formed with a first color separation film for separating the incident beam basing on wavelength while deflecting the optical paths of the resulting split beams; and a beam splitting module, being configured with at least one beam splitting plate and a liquid crystal layer; wherein, the at least one beam splitting plate is used for converging the beams from the color separation module while deflecting the optical paths thereof for enabling those to be discharged thereout following a normal direction of a light emitting surface of the backlight source.

Abstract: The collimating optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first collimation axis, and an included angle formed between the first collimation axis and an optic axis is greater than ?15° and smaller than 15°. Thus, the light after passing the collimating optical element forms a one-dimensional collimating light.

Abstract: The collimating optical element includes a light incident surface and a light emission curved surface. The light incident surface receives a light emitted by a light source. The light emission curved surface and a first plane are intersected to form a first curve. The first curve has a plurality of first curve segments, and each first curve segment includes at least three first tangent points. After passing each first tangent point along a connecting line of the light source and each first tangent point, the light exits along a first collimation axis, and an included angle formed between the first collimation axis and an optic axis is greater than ?15° and smaller than 15°. Thus, the light after passing the collimating optical element forms a one-dimensional collimating light.

Abstract: An adjustable range finder and the method thereof are disclosed, in which the method comprising: projecting a first beam containing information of an object on a refractive optical element, being comprised a liquid-crystal layer, electrically connected to a voltage device, and a transmission blazed grating, so as to generate a second beam; enabling the voltage device to provide a first voltage to the liquid-crystal layer for forming an energy-concentrated Mth-order diffraction image by the projection of the second beam; adjusting and enabling the voltage device to provide a second voltage to the liquid-crystal layer for forming an energy-concentrated Nth-order diffraction image by the projection of the second beam; forming a series of images by the use of the Mth-order diffraction image and the Nth-order diffraction image; comparing the disparity between corresponding points in the series of images for obtaining the distance between the object and the refractive optical element.

Abstract: A color separation system is disclosed, which comprises: a backlight source, being highly collimated and used for providing an incident beam; a color separation module, formed with a first color separation film for separating the incident beam basing on wavelength while deflecting the optical paths of the resulting split beams; and a beam splitting module, being configured with at least one beam splitting plate and a liquid crystal layer; wherein, the at least one beam splitting plate is used for converging the beams from the color separation module while deflecting the optical paths thereof for enabling those to be discharged thereout following a normal direction of a light emitting surface of the backlight source.

Abstract: A stereovision system is disclosed, which comprises: at least one diffractive optical element and an optical imaging device. Each of the diffractive optical element is used for allowing a first beam containing information relating to an object to pass through and thus transforming the same into a second beam containing information relating to the object. The optical imaging device is used for receiving the second beam so as to concentrate the energy thereof for forming an Mth-order diffraction image. By combining the aforesaid Mth-order diffraction image with another energy-concentrated Nth-order diffraction image, a series of images can be formed. Accordingly, by comparing the disparity between corresponding points in the series of images, the distance between the object and the diffractive optical element can be obtained. It is noted that the aforesaid M and N represent the order of diffraction.

Abstract: A nano-structure optical insulating membrane includes a substrate, a nano-structure layer formed on the substrate, and a metal layer formed on the nano-structure layer is disclosed. Upon exposure to light, the nano-structure layer increases visible light transmission but reduces internal reflection, and the metal layer blocks infrared light and thereby provides thermal insulation. The nano-structure optical insulating membrane of the present invention enhances illumination, spares lighting equipment, saves energy, and enables users to see farther.