摘要:
A projection lens assembly with six lenses, suitable for being applied to a pico projector projecting vivid and clear images. The projection lens assembly comprises six lenses, that is, a first lens having a minus focal distance, a second lens having a positive focal distance, a third lens having a minus focal distance, a fourth lens having a positive focal distance, a fifth lens having a positive focal distance and a sixth lens having a positive focal distance arranged in sequence and with spaces therebetween, an aperture stop between the second lens having the positive focal distance and the third lens having the minus focal distance, a reflective liquid-crystal panel behind the sixth lens having the positive focal distance, wherein the front sixth lens having the positive focal distance has a greater area than that of the rear reflective liquid-crystal panel.
摘要:
The a light source system of pico projector is composed of a light-emitting diode module, collimators, a lens array, magnification lenses, and an LCoS (light crystal on silicon) panel, arranged in sequence with appropriate spacing in-between. The light-emitting diode module, as the light source, emits red, green, and blue lights. The collimators convert light from the light-emitting diode module into collimated light. The lens array homogenizes the collimated light. The magnification lenses magnify the homogenized light from the lens array with a predetermined ratio onto the LCoS panel. The LCoS panel reflects and modulates the light to form an optic signal to be projected to a screen.
摘要:
The structure of a projector contains a light path module, a projection lens module, a source lens module, a reflection mirror module, a reflection panel module, and a light source module. The light path module has a U-shaped body. The source lens module and the light source module are configured along a left side of the light path module. The projection lens module is configured along a right side of the light path module. The projection lens module is for projecting image to a screen. The source lens module is for modulating the light from the light source module. The reflection mirror module is installed at a left corner of the light path module to reflect the incident light from the light source module towards the reflection panel module. The reflection panel module is installed from the outside of a right corner of the light path module.
摘要:
The present invention proposes a transmission-type liquid crystal projection display, which comprises an incident light source, a light-separating means, three transmission-type liquid crystal display, an L-shaped dichroic polarizing prism set, an optical path adjusting means, and a projection lens. The light source provides a single polarized light. The light-separating means separates the polarized light into three colored lights of the three primary wavelengths. The three liquid crystal displays respective correspond to the three colored lights. The optical path adjusting means is used to let the three colored lights travel through the corresponding three liquid crystal displays and then be incident on the L-shaped dichroic polarizing prism set so that the three colored lights can be synthesized into a single output light beam. The projection lens projects the output light beam onto a screen. The present invention has the effects of high efficiency, low cost, and simplified fabrication process.
摘要:
An apparatus for measuring the curvature radii of spherical and cylindrical surfaces is provided. The apparatus comprises a base, a probe and four ball rings of the same size, wherein the four ball rings are provided on the base and arranged into a square having a side length C. The probe is upward and downward movably mounted on the top surface of the base at the center of the square. There is also provided a method for measuring the curvature radii of spherical and cylindrical surfaces, wherein a ball-ring-distance is equal to C for the cylindrical surface or is equal to .sqroot.2C for the spherical surface.
摘要翻译:提供了一种用于测量球形和圆柱形表面的曲率半径的装置。 该装置包括基座,探针和四个相同尺寸的球环,其中四个球环设置在基座上并且布置成具有侧面长度C的正方形。探针向上和向下可移动地安装在顶面上 的基地在广场的中心。 还提供了一种用于测量球形和圆柱形表面的曲率半径的方法,其中球形环距离等于圆柱形表面的C或等于球面的2ROOT + E,弧度2 + EE C。
摘要:
A pico projection light system for improving an optical engine of a pico projector and enhancing effects of lighting. The improved pico projection light system comprises a light-emitting diode acting as a light source, a set of three collimators arranged with spaces therebetween and converting light emitted by the light-emitting diode into a parallel light, a set of two lens arrays arranged with spaces therebetween and uniformizing the parallel light, a set of two positive lenses arranged with spaces therebetween and magnifying light emitted from the lens arrays, a polarizing beam splitter receiving the magnified light and having a horizontal polarized light pass therethrough, and a reflective liquid crystal panel reflecting light and modulating optical signals projecting on a screen.
摘要:
A pico projector includes a light-emitting diode module, collimators, a lens array, magnification lenses, a reflection mirror, a polarizing beam splitter, an LCoS (light crystal on silicon) panel, and an image lens module, wherein the light-emitting diode module emits red, green, and blue lights. The collimators convert light from the light-emitting diode module into collimated light. The lens array homogenizes the collimated light. The magnification lenses magnify the homogenized light from the lens array with a predetermined ratio to be projected onto the LCoS panel. The reflection mirror changes direction of the light path. The polarizing beam splitter allows for transmission of a horizontal polarization light component and reflects a vertical polarization light component. The LCoS panel reflects and modulates the light to form an optic signal. The image lens module includes, in sequence, positive, positive, negative, positive, and positive lenses to project the optical signal to a screen.
摘要:
A dual-panel micro reflective liquid crystal projection device is provided for improving brightness of projected image, including a set of two reflective liquid crystal panels respectively arranged at top side and right side of a polarizing beam splitter so that a light beam emitting from a light source located at bottom side of the beam splitter is received and split by the beam splitter into a horizontal polarization component and a vertical polarization component, which are then respectively reflected and modulated by the two reflective panels into vertically polarized light and horizontal polarized light for simultaneously transmitting identical image signals to a projection system arranged at left side of the beam splitter to thereby double the brightness of the image projected onto a screen.
摘要:
A pico projector includes a light-emitting diode module, collimators, a lens array, magnification lenses, a reflection mirror, a polarizing beam splitter, an LCoS (light crystal on silicon) panel, and an image lens module, wherein the light-emitting diode module emits red, green, and blue lights. The collimators convert light from the light-emitting diode module into collimated light. The lens array homogenizes the collimated light. The magnification lenses magnify the homogenized light from the lens array with a predetermined ratio to be projected onto the LCoS panel. The reflection mirror changes direction of the light path. The polarizing beam splitter allows for transmission of a horizontal polarization light component and reflects a vertical polarization light component. The LCoS panel reflects and modulates the light to form an optic signal. The image lens module includes, in sequence, positive, positive, negative, positive, and positive lenses to project the optical signal to a screen.
摘要:
The present invention provides a continuous-zoom imaging device of an interferometer. Reflected lights of a reference plane and a test plane interfere with each other to generate an interference pattern. A collimation device converts a parallel light of the interference pattern into a convergent light. An optical path adjustment means guides the light to a polarizing beam splitter. A continuous-zoom device adjusts the magnification ratio of the interference pattern on the imaging passageway and to output an object image, which is then imaged on a charge-coupled device. The present invention can improve the quality of the interference pattern without using any rotating diffuser, and thus has the characteristics of reduced number of components, lowered cost, and shrunk volume. Besides, the present invention can utilize a joint device to connect the continuous-zoom device and an attenuator so as to achieve automatic light adjustment and convenient operation.