52results about How to "Reduce optical path difference" patented technology

An image output apparatus which outputs a high quality image by using a small number of pixel clock generation units, for use with a printing engine which has a plurality of laser beam control units. The image output apparatus includes a plurality of output units which output video signals based on print data to the respective laser beam control units in synchronization with a clock signal; and a plurality of clock control units which are arranged in correspondence with respective groups, that are prepared by grouping the plurality of output units, so as to decrease an optical path difference between laser beams controlled by the corresponding laser beam control unit. Each of the clock control units generates the clock signal on the basis of a synchronizing signal generated in the printing engine, and outputs the generated clock signal to output units belonging to a corresponding group.

An imaging device includes a light-sensing pixel region; a first pixel region; a second pixel region; a first wiring layer disposed above the light-sensing pixel region; and a second wiring layer disposed above the topmost wiring layer of the wiring layer disposed above the light-sensing pixel region, above the second pixel region. The first pixel region is disposed between the light-sensing pixel region and the second pixel region, adjacent to the light-sensing pixel region and the second pixel region, wherein the first pixel region overlaps, in plan view, a first shielding portion included in the first wiring layer. The second pixel region overlaps, in plan view, a second shielding portion included in the second wiring layer. An electroconductive pattern is formed at the first wiring layer at a position overlapping the second pixel region in plan view.

The invention relates to an air curtain design method for sealing a transmission channel in laser, which comprises the following steps: (1) determining the dimensions of a plane jet forming section according to the diameter of the transmission channel in the laser, wherein the dimensions mainly refer to the thickness and width of a plane jet; (2) after determining the dimensions of the plane jet forming section, determining the side length and height of the upper and lower surfaces of a pyramid; (3) in order to guarantee the uniformity of the air velocity, placing a flow deflector in the pyramid; (4) setting the length, width and height of an air curtain guide section and the connecting position of the transmission channel in the laser; (5) in order to decrease the thickness of boundary layers in different gas mixing regions and reduce the optical path difference because of gas density fluctuation, arranging a windshield cover at one side on which the air curtain guide section is connected with the outside; and (6) placing a hollow windshield plate in the transmission channel in the laser, wherein the position of the hollow windshield plate can be set according to the width of a turbulence mixing region. The air curtain design method provided by the invention can maintain the single uniform gas with a low absorption coefficient in the transmission channel in the laser, avoids the introduction of the larger optical path difference and has the characteristics of high laser transmissivity and high temperature resistance.

The invention relates to an image detecting device comprising an illuminating system and a sensing system, wherein the illuminating system is used for supplying a light beam to a reflecting surface in order to generate a reflecting light beam; the sensing system comprises a sensing element and a focusing element, the sensing element is arranged on a transmitting path of the reflecting light beam to receive the reflecting light beam, the focusing element is arranged between the sensing element and the reflecting surface, and an optical axis of the focusing element deviates a primary optical axis of the reflecting light beam. Because the optical axis of the focusing element deviates from the primary optical axis of the reflecting light beam in order to reduce the optical path difference of light beams of the reflecting light beam, the image detecting device has optimal imaging quality.

The invention provides a liquid crystal spatial light modulator with a wide viewing angle and belongs to the technical field of liquid crystal devices. The present invention adopts the pixel unit arranged in an array to form the pixel unit distributed in the photosensitive layer surface and the photosensitive area connecting each pixel unit, and fills the light-absorbing material to form a light blocking area in each pixel unit to form a reflective layer. Part of the upper surface of each light-blocking area is provided with a metal reflection unit to form a metal isolation grid. In the present invention, a conductive layer is only arranged on the surface of the glass substrate near the photosensitive area, and the photosensitive area and the conductive layer are used as an electrode together, while the metal isolation grid The grid is used as another electrode to realize the formation of a coplanar horizontal electric field between any two adjacent metal photosensitive regions and the metal reflective unit in the electrified state to drive the liquid crystal molecules. The viewing angle performance of the device can be improved based on the device structure of the present invention, so that the viewing angle can be widened, and at the same time, the photosensitivity and imaging effect of the device can be improved through the improvement of the structure.

Provided is a three-dimensional display device capable of displaying two-dimensional and three-dimensional frames. The three-dimensional display device comprises a display device, a lens unit, and a switchable polarized light device. The display device comprises a display surface used for displaying frames having polarization direction. The switchable polarized light device is disposed between the display device and the lens unit and comprises two substrates, a liquid crystal layer arranged between the substrates, and two transparent electric conduction pattern layers. The transparent electric conduction pattern layers are disposed between one substrate and the liquid crystal layer and comprise multiple electrode strips on the display surface.