Abstract: An optical lens includes an array of lens units. Each lens unit includes a main body, a light diverging portion and a light converging portion. The main body includes a light incident surface and a light emitting surface opposite to the light incident surface. The light diverging portion is configured for expanding a light field along a first direction. The light converging portion is configured for compressing a light field along a second direction. The light diverging portion and the light converging portion are formed on at least one of the light incident surface and the light emitting surface. The light converging portion includes parallel recesses distributed along the second direction.

Abstract: An optical lens includes an array of lens units. Each lens unit includes a main body, a light diverging portion and a light converging portion. The main body includes a light incident surface and a light emitting surface opposite to the light incident surface. The light diverging portion is configured for expanding a light field along a first direction, and the light converging portion is configured for compressing a light field along a second direction. The light diverging portion and the light converging portion are both formed on one of the light incident surface and the light emitting surface.

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 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: An exemplary illuminating device comprises a light source module, a light reflective module, a lens array and a light transmissive module. The lens array is for expanding a light field of the illuminating device along a first direction and compressing the light field of the illuminating device along a second direction. The light transmissive module comprises a first surface facing towards the lens array and a second surface opposite to the first surface. The second surface has a plurality of microstructures formed thereon thereby expanding the light field of the illuminating device along the first direction.

Abstract: An exemplary illuminating device includes a circuit board, a plurality of light sources, a thermal interface material, and a plurality of stretched resilient elements. The circuit board has a first surface and a second surface at an opposite side of the circuit board to the first surface. The plurality of light sources is electrically mounted on the first surface of the circuit board. The heat dissipating device is attached on the second surface of the circuit board. The thermal interface material is applied between the second surface of the circuit board and the heat dissipating device. The plurality of resilient elements are configured for connecting the circuit board with the heat dissipating device and providing a pulling force therebetween.

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 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 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: 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: 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: A waveguide device used for a planar display device having an image source for emitting modulated light beams and a display panel for displaying an image. The waveguide device includes a slab waveguide having a light entrance plane and a light exit plane, a lens array comprising a plurality of lenses disposed in the form of a matrix for individually tuning and guiding corresponding modulated light beams to desired positions on the light entrance plane of the slab waveguide, a wedge waveguide for receiving modulated light beams emitted from the light exit plane of the slab waveguide and emitting the received modulated light beams to the display panel to form the image, and a fixing device for fixing the wedge waveguide to the slab waveguide.