摘要:
A light source module for a scanning projection apparatus is provided. The light source module includes a plurality of point light sources and at least one light blocking unit. Each point light source is capable of providing a color light beam. The color light beams are combined into a combined light beam and the colors of the color light beams are different. The at least one light blocking unit is capable of being inserted into a transmission path of at least one of the color light beams at a fixed frequency to block a portion of the color light beam.
摘要:
A method for controlling a lighting device that consists of at least a lighting source, a color sequential device and a single light valve consisting of an array of light processing elements that are controlled by bits, the method comprising the steps of emitting a light beam with said light source, filtering said light beam by said color sequential device to achieve a colored light beam and processing said colored light beam with a bit depth of less than 16.
摘要:
A system and method for calibrating color printers, and related particularly to, a system and method for calibrating color printers over a network utilizing a profile server (representing a networkable computer server system) which provides color transformations in accordance with printer configurations having at least information read from consumable ink or toner cartridges for such printers. Such color transformations enable different color printers, or even the same color printer with different printer configurations, to render color consistently.
摘要:
Projection system or lighting device which is provided of a color sequential device as for example a color wheel (6), a rotating prism or other, wherein the color sequential device consists of a combination of at least one of the primary colors Red, Green and Blue with at least one of the secondary colors Cyan, Magenta and Yellow.
摘要:
This invention is one digital exposure device, which contains: body case; printing lamp, filters, light tunnel, exposure assembly and shutter set in the body case; its character is: the exposure assembly contains: Polarizing Beamsplitters, condensing lens, Liquid Crystal on Silicon Panel, digital enlarging lens and light source. The panel is at the same position of the negative on traditional minilab. Above the Liquid Crystal on Silicon Panel there is Polarizing Beamsplitters. The condensing lens sticks to the outside of the prism and the light source close to the outside of the condensing lens. The digital enlarging lens lies above the prism; the OA of the Liquid Crystal on Silicon Panel, Polarizing Beamsplitters and digital enlarging lens coincides with that of the printing lamp, filters and light tunnel. The whole structure of this device is simplified and the light intensity of existing digital exposure device is increased. The technology is advanced so that the digital exposure device will be more productive.
摘要:
A color wheel including a motor body, a housing and a color filter. The housing is set to one side of the central axis of the motor body. The color filter is set on the housing. In this case, at least a groove is formed on one side of the housing adjoining the color filter. In addition, the invention also provides a motor of a color wheel.
摘要:
A photographic printer has a first polarizing beam splitter for splitting light from a light source into a first polarized light and a second polarized light. The first polarized light passes through a first liquid crystal cell having a liquid crystal material held between grid-like transparent electrodes. At this time, the plane of polarization of the first polarized light is changed in each small region formed in the liquid crystal cell. The first polarized light then enters a second polarizing beam splitter. On the other hand, the second polarized light enters the second polarizing beam splitter after its plane of polarization has been changed. At the second polarizing beam splitter, the first polarized light and the second polarized light are combined and then projected on a print paper via a photographic film so that an image recorded on the photographic film is exposed and printed on the print paper. Accordingly, the time required for exposure can be shortened compared to conventional photographic printers using polarizing plates.
摘要:
A light concentrator, preferably for use with a color optical scanning device includes a reflector (34) with parabolic reflecting walls (36). Green LEDs (22), red LEDs (24), and blue LEDs (26) are situated at the base of the reflector (34) and a diffuser (30) is attached to the opposite end thereof. An electric switch (32) controls the LED array. When an input page is scanned, the switch (32) activates one type of LEDs at a time. The reflector (34) concentrates the emitted light at the surface of the diffuser (30). The photodetector array of the xerographic device receives three monochromatic images which are then superimposed to provide a color image.
摘要:
A method for additive mixing of colors wherein different colored light beams are mixed after being reflected from a rotating reflecting device. An apparatus for additive color mixing comprising sources of different colored light beams with devices for controlling their intensity, a mixing chamber and a device for cooling the system wherein, in the mixing chamber and opposite the light sources there is provided a rotating reflection device secured on a shaft which is rotatable and which reflection device has cooling vanes or fins formed on its periphery.
摘要:
An improved light source for a photographic printer uses a plurality of print lamps. A heatsink and blower dissipate heat generated by the print lamps. The light diffuser which diffuses light from the lamp includes a white porcelain diffuse reflector.