摘要:
A screen adapted to a projection device having a transparent layer, a plurality of light-mixing chambers, and a plurality of lens structures is provided. The light-mixing chambers are located on a back surface of the transparent layer away from the projection device. The lens structures are disposed on a front surface of the transparent layer facing towards the projection device and corresponding to the light-mixing chambers respectively. The size of the opening of the light-mixing chamber is smaller than the size of the bottom surface of the corresponding lens structures. The lens structure is adapted to refract a light beam from the projection device, and the opening of the corresponding light-mixing chamber is adapt to allow the light beam pass through, such that the corresponding light-mixing chamber is adapted to concentrate the light beam therein and transform the light beam into a light beam projected out of the screen.
摘要:
An optical film is applied to a side-emitting backlight module. The side-emitting backlight module has a light guide plate for guiding a chief light beam. The light guide plate has a light emitting surface to define a normal direction thereof. The optical film includes a lower prism structure, an intermedium layer, and an upper prism structure. The lower prism structure is disposed on the light emitting surface. The intermedium layer is connected between the lower prism structure and the upper prism structure. When the chief light beam exits from the light emitting surface of the light guide plate, and then goes through the lower prism structure, it goes through the intermedium layer along a changed traveling direction. When the chief light beam exits from the intermedium layer, and goes through the upper prism structure, it turns from the changed traveling direction to the normal direction.
摘要:
An optical touch apparatus includes a light source, light guide unit, and optical detector. The light source next to the display area emits a beam. The light guide unit next to the display area and in the transmission path of the beam includes a light guide body and a Lambertian scattering structure. The light guide body has first, second, third, fourth, and light incident surfaces. The beam enters the light guide body through the light incident surface and is transmitted from the first surface to a sensing space in front of the display area. The Lambertian scattering structure is disposed on at least one of the second, third, and fourth surfaces for scattering the beam to the first surface. The optical detector next to the display area senses a change in light intensity of the beam in the sensing space. An optical touch display apparatus is also provided.
摘要:
An optical touch apparatus including a first light emitting device, a second light emitting device, a third light emitting device, a fourth light emitting device, a first image detector, a second image detector, and a control unit is provided. The control unit controls the average brightness of the third light emitting device less than each of the average brightness of the second light emitting device and the fourth light emitting device when the control unit controls the first image detector to detect an image. The control unit controls the average brightness of the second light emitting device less than each of the average brightness of the first light emitting device and the third light emitting device when the control unit controls the second image detector to detect an image. A driving method is also provided.
摘要:
An optical touch apparatus includes a light source capable of emitting a beam, a light guide unit disposed in a transmission path of the beam, and an optical detector. The light guide unit includes a light guide body having a first surface, a second surface, a third surface, a fourth surface, and a scattering structure disposed on at least one of the second surface, the third surface, and the fourth surface. The beam is capable of entering the light guide body, being scattered to the first surface by the scattering structure, and then being transmitted to a sensing space. The scattering structure includes separated scattering patterns including a resin composition and scattering particles dispersed in the resin composition. The ratio of the weight percentage of the scattering particles to the weight percentage of the resin composition is equal to or greater than 0.1.
摘要:
An optical touch apparatus includes a light source capable of emitting a beam, a light guide unit disposed in a transmission path of the beam, and an optical detector. The light guide unit includes a light guide body having a first surface, a second surface, a third surface, a fourth surface, and a scattering structure disposed on at least one of the second surface, the third surface, and the fourth surface. The beam is capable of entering the light guide body, being scattered to the first surface by the scattering structure, and then being transmitted to a sensing space. The scattering structure includes separated scattering patterns including a resin composition and scattering particles dispersed in the resin composition. The ratio of the weight percentage of the scattering particles to the weight percentage of the resin composition is equal to or greater than 0.1.
摘要:
An optical touch apparatus includes a light source, light guide unit, and optical detector. The light source next to the display area emits a beam. The light guide unit next to the display area and in the transmission path of the beam includes a light guide body and a Lambertian scattering structure. The light guide body has first, second, third, fourth, and light incident surfaces. The beam enters the light guide body through the light incident surface and is transmitted from the first surface to a sensing space in front of the display area. The Lambertian scattering structure is disposed on at least one of the second, third, and fourth surfaces for scattering the beam to the first surface. The optical detector next to the display area senses a change in light intensity of the beam in the sensing space. An optical touch display apparatus is also provided.
摘要:
A light source module includes at least one light emitting device and a focus adjustable lens array. The light emitting device is adapted to emit a light beam, the focus adjustable lens array is disposed in the transmission path of the light beam and includes a plurality of focus adjustable lenses arranged in an array. Each of the focus adjustable lenses includes a first light transmissive plate disposed in the transmission path of the light beam, a first electrode disposed on a peripheral area of the first light transmissive plate, a second light transmissive plate disposed in the transmission path of the beam, a second electrode disposed on a peripheral area of the second light transmissive plate, and a focus adjustable solution disposed between the first light transmissive plate and the second light transmissive plate. The focus adjustable solution includes a solvent and an electrotaxis solute.
摘要:
A backlight module disposed under a display panel and close to a polarizer on a lower surface of the display panel is provided. The backlight module has an illumination module and an optical film disposed above the illumination module. The optical film has a lower layer and an upper layer attached to the lower layer. The upper layer is close to the polarizer and has a plurality of first micro-protrusion structures formed on an upper surface thereof. The lower layer has a plurality of second micro-protrusion structures with various heights formed on an upper surface thereof. The higher second micro-protrusion structures support the upper layer, so as to form a gap with various dimensions between the upper layer and the lower layer.