摘要:
An optical film applied in a backlight module is provided. The optical film includes a basic layer, a plurality of periodically arranged reflective convex-parts and a plurality of periodically arranged collimating parts. The reflective convex-parts are disposed on the first surface of the basic layer. The reflective convex-part includes at least one reflective side surface and an incident bottom surface contacting a light guide plate. The collimating parts are disposed on the second surface of the basic layer. The reflective convex-parts are respectively corresponded to the collimating parts. In each corresponding pair of the reflective convex-part and the collimating part, a central axis of the reflective convex-part is substantially coincided with a central axis of the collimating part. In addition, a backlight module using the optical film is also provided.
摘要:
An artificial retinal system includes an external optical device having an image generator and a background light generator, and a retinal implant chip having a solar cell and a stimulus generator. The stimulus generator is disposed to receive a target image projected by the image generator and a background light provided by the background light generator, and receives the electrical power from the solar cell. The stimulus generator includes an image sensing stimulator operable to convert the target image into electrical stimuli, and a contrast enhancer for reducing effect of the background light on the electrical stimuli.
摘要:
A prism system and method for eliminating color aberration in an illumination system of a micro projector is disclosed. A light beam enters into a first prism through a light incident surface thereof and is further emitted through a light-emitting surface of the first prism. The light beam then enters into a second prism through a first interface thereof, passes through a second interface of the second prism and reaches a digital micromirror device (DMD). The light beam is reflected by the DMD so as to pass through the second interface and reach the first interface. The light beam is totally reflected by the first interface so as to be emitted through a third interface of the second prism. Therefore, the invention eliminates lateral color aberration that occurs in an active area of the DMD, reduces costs of illumination equipment and achieves a preferred projection effect.
摘要:
An optical object distance simulation device for reducing total optical path includes: a lens, an achromatic lens set, a first image lens, and a second image lens. The achromatic lens set disposes beside one side of the lens, the first image lens disposes beside one side of the achromatic lens set, and the second image lens disposes beside one side of the first image lens. The achromatic lens set is composed of a first lens and a second lens. The first lens is a double-concave lens. The second lens is a double-convex lens. One concave face of the double-concave tightly contacts with one convex face of the double-convex lens. Therefore, the lens, the achromatic lens set, the first image lens, and the second image lens match with each other in order to simulate real object distance for reducing an object distance between a test camera lens and a corresponding chart.
摘要:
An optical object distance simulation device for reducing total optical path includes: a lens, an achromatic lens set, a first image lens, and a second image lens. The achromatic lens set disposes beside one side of the lens, the first image lens disposes beside one side of the achromatic lens set, and the second image lens disposes beside one side of the first image lens. The achromatic lens set is composed of a first lens and a second lens. The first lens is a double-concave lens. The second lens is a double-convex lens. One concave face of the double-concave tightly contacts with one convex face of the double-convex lens. Therefore, the lens, the achromatic lens set, the first image lens, and the second image lens match with each other in order to simulate real object distance for reducing an object distance between a test camera lens and a corresponding chart.
摘要:
An artificial retinal system includes an external optical device having an image generator and a background light generator, and a retinal implant chip having a solar cell and a stimulus generator. The stimulus generator is disposed to receive a target image projected by the image generator and a background light provided by the background light generator, and receives the electrical power from the solar cell. The stimulus generator includes an image sensing stimulator operable to convert the target image into electrical stimuli, and a contrast enhancer for reducing effect of the background light on the electrical stimuli.
摘要:
A light guide is provided, including a guiding layer, a reflective layer and an intermediary layer. The guiding layer includes a first upper surface and a first lower surface, wherein a guiding layer micro-structure is formed on the first upper surface, and the guiding layer has a guiding layer refractive index. The reflective layer includes a second upper surface and a second lower surface, wherein a reflective layer micro-structure is formed on the second lower surface, and the reflective layer has a reflective layer refractive index. The intermediary layer is sandwiched between the guiding layer and the reflective layer, and contacts the first lower surface of the guiding layer and the second upper surface of the reflective layer, wherein the intermediary layer has an intermediary layer refractive index, and the intermediary layer refractive index is smaller than the guiding layer refractive index and the reflective layer refractive index.