Abstract: An illumination system includes a coherent light source, a first light-combining element, an optical wavelength conversion module, and a first auxiliary light source. The coherent light source emits a coherent light beam. The first light-combining element is disposed on a transmission path of the coherent light beam. The light wavelength conversion module is disposed on a transmission path of the coherent light beam transmitted from the first light-combining element and converts the coherent light beam into a first converted light beam, and reflects the first converted light beam back to the first light-combining element. The first auxiliary light source emits a first auxiliary light beam which is transmitted to the first light-combining element along the transmission path of the coherent light beam. The first light-combining element combines the first auxiliary light beam and the first converted light beam. A projection apparatus is also provided.

Abstract: A head-up display including a display panel, a non-mechanical focusing lens, and a determining unit is provided. The display panel is configured to emit an image beam. The non-mechanical focusing lens is disposed on a transmission path of the image beam and generates an image of the image beam. The determining unit is electrically connected to the non-mechanical focusing lens and configured to adjust a focal length of the non-mechanical focusing lens according to a sensing signal, so as to change an image distance from the image to a user's eye.

Abstract: A virtual image display module, disposed in front of at least one eye of a user, including an image displaying unit and an optical lens group is provided. The image displaying unit provides an image beam. The optical lens group includes a reflecting unit, a first lens, a second lens and a diffractive optical element, which are disposed on the transmission path of the image beam. The first lens is disposed between the image displaying unit and the reflecting unit. The reflecting unit is disposed between the first lens and the second lens. The second lens is disposed between the reflecting unit and the eye. The diffractive optical element, the reflecting unit, the first lens and the second lens are independent optical elements, respectively. The image beam is transmitted to the eye through the first lens, the reflecting unit, the second lens and the diffractive optical element.

Abstract: A wavelength conversion device including a main body and a transparent component is provided. The main body has at least one wavelength conversion region and a slot. The transparent component is disposed in the slot to form a light transmission region, wherein one of the main body and the transparent component has at least one groove, and another one of the main body and the transparent component is engaged with the groove, such that the main body and the transparent component are fixed together. In addition, a projector having the wavelength conversion device is also provided.

Abstract: A light wavelength conversion module including a substrate, a first light wavelength conversion layer, and a first light transmissive layer is provided. The substrate has a light passing-through area and a first light wavelength conversion area. The first light wavelength conversion layer is located at the first light wavelength conversion area and between the first light transmissive layer and the substrate. The first light wavelength conversion layer is suitable for converting a coherent light beam into a first conversion light beam, wherein wavelengths of the coherent light beam and the first conversion light beam are different from each other. An illumination system and a projection apparatus are also provided.

Abstract: An illumination system including at least one laser source, at least one anisotropic light expanding element and a wavelength conversion element is provided. The at least one laser source emits a laser beam. The at least one anisotropic light expanding element is disposed on the transmission path of the laser beam and causes the laser beam to expand along a light expanding direction. The light expanding direction is substantially parallel to the slow axis of the laser beam. The wavelength conversion element is disposed on the transmission path of the laser beam. A projection apparatus is also provided.

Abstract: The present invention relates to an auto lamp structure, which comprises a reflector, a light source, and a covering part. The reflector exhibits a first ellipse in the direction of a first axis about a center, and exhibits a second ellipse in the direction of a second axis about the center. The long axis or the short axis of the first ellipse is different from the long axis or the short axis of the second ellipse. In addition. the reflector has an opening. The light source is disposed in the reflector, and illuminates light via the opening. The covering part is disposed above the reflector for controlling the distribution pattern of the light. Thereby, the present invention uses a reflector of a complex ellipse structure to control the distribution pattern of the light of the light source for complying with the regulations.

Abstract: A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided.

Abstract: A projection lens for projecting an image beam is provided. The image beam is converted by a light valve from an illumination beam irradiating the light valve. The projection lens includes a first lens group, a second lens group, and a third lens group. The first lens group is disposed on a transmission path of the image beam, and has a first optical axis. The second lens group is disposed on both a transmission path of the illumination beam and the transmission path of the image beam, and between the light valve and the first lens group. The second lens group has a second optical axis. The second optical axis is inclined with respect to the first optical axis. The third lens group is disposed on the transmission path of the image beam, and between the first lens group and the second lens group. A projection apparatus is also provided.

Abstract: A projection lens for projecting an image beam is provided. The image beam is converted by a light valve from an illumination beam irradiating the light valve. The projection lens includes a first lens group, a second lens group, and a third lens group. The first lens group is disposed on a transmission path of the image beam, and has a first optical axis. The second lens group is disposed on both a transmission path of the illumination beam and the transmission path of the image beam, and between the light valve and the first lens group. The second lens group has a second optical axis. The second optical axis is inclined with respect to the first optical axis. The third lens group is disposed on the transmission path of the image beam, and between the first lens group and the second lens group. A projection apparatus is also provided.

Abstract: A lens array module includes a light incident surface, a light emitting surface opposite to the light incident surface, and a plurality of first and second lens surfaces. The first lens surfaces are arranged on the light incident surface to form into an array. The second lens surfaces are arranged on the light emitting surface to form into an array. The center of curvature of each of the first lens surfaces located at two opposite sides of a first reference point on the light incident surface deviates away from the first reference point in a direction parallel to a first reference axis, and the center of curvature of each of the second lens surfaces located at two opposite sides of a second reference point on the light emitting surface deviates toward the second reference point in a direction parallel to the first reference axis. A projection apparatus is also provided.

Abstract: A projection apparatus including a light source, a light uniforming and shaping module, and a light valve is provided. The light source has a light-emitting surface and is capable of emitting an illumination beam. The light uniforming and shaping module is disposed on a transmission path of the illumination beam. The light valve is disposed on a projection surface and on the transmission path of the illumination beam from the light uniforming and shaping module, wherein the light valve is capable of converting the illumination beam into an image beam. The light uniforming and shaping module is for projecting a light from each point of the light-emitting surface to a region on the projection surface, and the union of the regions projected from all the points on the light-emitting surface covers an entire active surface of the light valve. An illumination system is also provided.

Abstract: The present invention relates to an auto lamp structure, which comprises a reflector, a light source, and a covering part. The reflector exhibits a first ellipse in the direction of a first axis about a center, and exhibits a second ellipse in the direction of a second axis about the center. The long axis or the short axis of the first ellipse is different from the long axis or the short axis of the second ellipse. In addition. the reflector has an opening. The light source is disposed in the reflector, and illuminates light via the opening. The covering part is disposed above the reflector for controlling the distribution pattern of the light. Thereby, the present invention uses a reflector of a complex ellipse structure to control the distribution pattern of the light of the light source for complying with the regulations.

Abstract: The invention provides a ribbonlike light illumination apparatus, comprising a ribbonlike member, a plurality of heat-dissipating fins, and a plurality of light devices. The ribbonlike member has a first surface and a second surface. The heat-dissipating fins are disposed on the first surface. The light devices are demountably mounted on the second surface. The ribbonlike light illumination apparatus of the invention may be installed in an advertisement box. A more uniform light source than conventional fluorescent lamps can be achieved by adjusting the distances between the light devices on the ribbonlike member. Besides, the ribbonlike light illumination apparatus of the invention has properties of longer life and saves more power than conventional fluorescent lamps.

Abstract: A traffic light includes a circuit board on which linear arrays of light-emitting diodes (LEDs) are mounted in a V-shaped arrangement, an inner cover having a first inner surface facing the LEDs to receive light from the LEDs and an opposite, first outer surface forming elongate prisms inclined with respect to a predetermined axis at a predetermined angle of 65-80 degrees, and a front cover having a second inner surface facing the first outer surface of the inner cover to receive the light from the inner cover, and an opposite, second outer surface through which the light is further projected out of the traffic light. The second inner surface of the front cover forms a honeycomb structure including a plurality of hexagonal lens blocks, each composed of an array of individual lens segments.

Abstract: A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

Abstract: A traffic light includes a circuit board on which linear arrays of light-emitting diodes (LEDs) are mounted in a V-shaped arrangement, an inner cover having a first inner surface facing the LEDs to receive light from the LEDs and an opposite, first outer surface forming elongate prisms inclined with respect to a predetermined axis at a predetermined angle of 65-80 degrees, and a front cover having a second inner surface facing the first outer surface of the inner cover to receive the light from the inner cover, and an opposite, second outer surface through which the light is further projected out of the traffic light. The second inner surface of the front cover forms a honeycomb structure including a plurality of hexagonal lens blocks, each composed of an array of individual lens segments.

Abstract: A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

Abstract: A backlight module for LCD monitors and method of backlighting are disclosed, in which a dome-shaped lens and a LED light source are employed in the backlight module. This method includes the preparation of a LED light source and a dome lens, fitting the dome lens over the light source, attaching the dome lens and the light source under the optical lens sheets, whereby the optical lens sheet closest to the light source is at a vertical distance X therefrom. The hemispherical lens provides light coverage on the optical lens sheet in a peripheral areas with diameters ranging from 2X to 7X, as compared with the small area (diameter X) using the conventional technique. The dome lens is constructed with a light emergent plane on one side, and a light incident plane around hollow cavity in the center.

Abstract: A lens assembly for evenly distributing light beams includes a body, an input lens and an output lens. The input lens and the output lens are oppositely mounted on the body. The input lens is a convex lens and the output lens is composed of multiple lens units arranged in such a way that a lens group is formed such that a light beam passing through the input lens and into the body is able to be evenly distributed by the output lens.