Abstract: A projector includes a display screen, an imaging system adapted to provide an optical image, a reflector arranged on a transmission path of the optical image, and an optical transmission medium disposed inside the refraction space. The refraction space is formed between the reflector and the display screen. The optical image travels through the optical transmission medium by the reflection of the reflector and is transmitted to the display screen. A refractive index of the optical transmission medium is not equal to one.

Abstract: A laser device includes a laser source and an optical module. The laser source is configured for emitting a UV laser beam with a single wavelength. The optical module includes a first optical element disposed on a light path of the UV laser beam. The first optical element has a first surface and a second surface at opposite sides thereof. The first surface faces toward the laser source. At least one of the first and second surfaces is aspherical such that the UV laser beam is capable of focusing on a focal plane with a satisfactory depth of focus.

Abstract: A projector including a display screen and an imaging system is provided. The imaging system is adapted for providing an optical image and the optical image is transmitted to the display screen through an optical transmission medium. The refractive index of the optical transmission medium is not equal to one. The transmission path of the optical image is changed by controlling the refraction index of the optical transmission medium in order to thin the projector.

Abstract: An exemplary zoom lens comprises, in order from an object side of the zoom lens, a first lens module having a negative refractive power, a second lens module having a positive refractive power and a third lens module having a positive refractive power. When the zoom lens is adjusted from wide-angle to telephoto, the first lens module remain fixed in place, the second group is moved toward the object side thereof along an optical axis so as to perform the zooming, while the third group is moved along the optical axis so as to compensate for any fluctuation of in position of an image on the image plane caused by the movement of the second lens module.

Abstract: A light emitting diode display device includes a circuit board and a plurality of pixel units. Each pixel unit includes a light emitting diode assembly positioned on and electrically connected to the circuit board, and a light-mixed component positioned on a side of the light emitting diode assembly configured for mixing lights emitted from the light emitting diode assembly to generate a mixed light beam.

Abstract: An illuminating device includes a housing, a light source module, and a plurality of replaceable optical elements. The light source module is positioned in the housing for emitting light having an initial illumination range. The optical elements are configured for respectively converting the initial illumination range into different outputting illumination ranges, each of the optical elements is selectively detachably mountable to the housing for achieving a desired illumination range.

Abstract: An exemplary zoom lens comprises, in order from an object side of the zoom lens, a first lens module having a negative refractive power, a second lens module having a positive refractive power and a third lens module having a positive refractive power. When the zoom lens is adjusted from wide-angle to telephoto, the first lens module remain fixed in place, the second group is moved toward the object side thereof along an optical axis so as to perform the zooming, while the third group is moved along the optical axis so as to compensate for any fluctuation of in position of an image on the image plane caused by the movement of the second lens module.

Abstract: A lamp cover includes an array of lenses. Each lens includes an incidence surface for receiving light, and an emitting surface opposite to the incidence surface. One of the incidence surface and the emitting surface is a convex surface. Each lens includes a first end and an opposite second end in a column direction, a third end and an opposite fourth end in a row direction. The lenses in each row, a thickness difference between the first end and the second end of each lens is greater than a thickness difference between the third end and the fourth end thereof. An illumination lamp is also provided in this invention.

Abstract: An optical lens (10) includes an array of lens units (11). Each lens unit includes a main body (101), a light diverging portion (112) and a light converging portion (114). The main body includes a light incident surface (110) and a light emitting surface (112) opposite to the light incident surface. The light diverging portion is used to expand a light field along an x-direction. The light converging portion is used to compress a light field along a y-direction. In specific embodiments, the light diverging portion and the light converging portion are respectively formed on the light incident surface and the light emitting surface.

Abstract: An illumination lamp (40) includes at least one solid-state lighting member (41) for radiating light, and a lampshade (10) being arranged corresponding to the at least one solid-state lighting member. The lampshade includes an array of lenses (11). Each lens has an incidence surface (110) for incidence of the light into the lampshade, and an opposite emitting surface (112) for emission of the light from the lampshade into ambient. At least one of the incidence surface and the emitting surface is a concave surface. The concave surface extends along a first direction. At least one micro-structure (111) is formed on the concave surface. The at least one micro-structure is long and narrow, and extends along the first direction. The micro-structure is configured for increasing radiating area of the light entering into the lampshade along a second direction intersecting the first direction.

Abstract: Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged.

Abstract: Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged.

Abstract: Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged.

Abstract: A method of manufacturing micro-structure elements by utilizing molding glass includes the steps of forming a mold having a micro-structure pattern thereon by using an electroforming process, making a copy of the micro-structuring pattern on a glass structure by using glass molding technology, and filling clothing material on the glass substrate to form a micro-structure element with less complex and cost, thereby being suitable for mass production.

Abstract: Super-resolution optical components and left-handed materials thereof are provided. A left-handed material includes a substrate, a plurality of deformed split ring resonators (DSRR), and a plurality of metallic bars, wherein the DSRR and the metallic bars are disposed on the substrate with each DSRR and metal bar alternately arranged.