摘要:
Disclosed is an integral film comprising a base bearing a pattern of complex lenses on a surface thereof wherein the complex lenses comprise two or more distinct layers.
摘要:
A diffusing adhesive layer has a light-transmissible adhesive layer dispersively containing colorless light-transmissible particles so as to exhibit light diffusing characteristic. The light diffusing characteristic of the diffusing adhesive layer is not higher than 10% in terms of a light diffusion factor which is defined as 100×I30/I10 when I30 is the intensity of light transmitted in a direction inclined by 30 degrees relative to a direction of perpendicular transmission of perpendicularly incident light, and I10 is the intensity of light transmitted in a direction inclined by 10 degrees relative to the direction of perpendicular transmission of perpendicularly incident light. Another diffusing adhesive layer has a total light transmission factor of not lower than 85% and a direct transmission factor of not higher than 30%. In an optical member, one of the diffusing adhesive layers is provided on an optical material having at least a polarizing plate or a retarder plate. In a reflection type liquid-crystal display device, the optical member and one of the diffusing adhesive layers are provided between a liquid-crystal cell and a polarizing plate.
摘要翻译:漫射粘合剂层具有透光性粘合剂层,其分散地含有无色透光颗粒,以显示出光散射特性。 漫射粘合剂层的光散射特性以光扩散因子计定为10%,当被定义为100×I 30 / I 10时,当I30是相对于垂直方向倾斜30度的方向透射的光的强度时 透射垂直入射光,I10是相对于垂直入射光的垂直透射方向倾斜10度的方向的光的强度。 另一个扩散粘合剂层的总透光率不低于85%,直接透光率不高于30%。 在光学构件中,扩散粘合剂层之一设置在至少具有偏振片或延迟板的光学材料上。 在反射型液晶显示装置中,光学构件和一个扩散粘合剂层设置在液晶单元和偏振板之间。
摘要:
A lighting element in which a plurality of point sources are in the form of LEDs situated between a microprism sheet and a reflective backing arrangement, the microprism sheet being of the type having a plurality of v-shaped grooves. The microprism sheet exhibits a diffusion effect, and the LEDs are situated in the grooves so that light from the LEDs that is directly incident on walls of the grooves, and light that is reflected by the backing, is combined by refraction and diffused to provide an even lighting effect. The lighting element may be made of flexible materials so that they can be formed into tubular lighting elements, or made into flat or curved panels.
摘要:
In an optical sheet 10 having a prism surface 16 formed by providing unit prisms 14 on the upper surface of a transparent base material 12, a coating layer 18 is provided on the reverse surface of the transparent base material opposite to the prism surface 16, spherical beads 20 are arranged projecting from the surface of the coating layer 18 by 1 to 10 &mgr;m in height, and the coating layer 18 is brought into contact with the flat and smooth surface 22A of the light-transmissive material 22 through the spherical beads 20 which are put between them. The spherical beads are 1 &mgr;m or less in half bandwidth of the distribution of particle diameters and are made uniform in height projecting from the coating layer 18.
摘要:
An optical film including a transparent film having a hard coating layer provided on one side thereof, the hard coating layer including a repetitive prismatic structure having formed therein optical-path changing slopes oriented substantially toward certain directions at an angle of 35 to 48 degrees relative to the transparent film, and an adhesive layer laid on the other surface of the transparent film.
摘要:
A display system has a directional reflection screen with a triangularly-shaped mirror sheet as horizontal focusing for observers and stereoscopic image projecting means. The directional reflection screen has a triangularly-shaped mirror sheet with included angles at least some of which are non-right angles. This enables a plurality of observers to simultaneously obtain a stereoscopic view using a binocular parallax without wearing special glasses and without having to position themselves in a very limited number of positions relative to the screen. Vertical diffusion can also be provided by using a lens sheet. The screen can be made concave in the horizontal or vertical directions, or both.
摘要:
A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of irregularly patterned diffractive fringes. An input beam illuminates at least part of the hologram. The hologram transmits a portion of the input beam onto an output plane. In doing so, the energy of the input beam is spatially redistributed at the output plane into a homogenized output beam having a preselected spatial energy distribution at the output plane. Thus, the illuminated portion of the output plane has a shape predetermined by the designer of the homogenizer.
摘要:
A focusing optical system is provided which prevents unevenness in a distribution of an amount of light caused by positional offset of a light source, and which can focus with high precision. A diffraction grating and a focusing lens are provided in a casing of the focusing optical system. Due to the diffraction grating, each of focused spots on a photosensitive material are focused at a magnification which is greater than a focusing magnification determined by the focusing lens. Even if a light beam is offset in a subscanning direction, unevenness in the distribution of the amount of light can be reduced and highly precise focusing can be achieved.
摘要:
The present invention relates to a prism diffuser for diffracting and spreading light, and in particular to a prism diffuser for diffracting and spreading light which is capable of spreading light in a certain direction at a wider angle based on a structure combined with a prism capable of diffracting light on a surface of a medium formed of a glass which transmits or reflect light, a film formed of a transparent synthetic resin material or a metallic plate and a diffuser capable of spreading light and diffracting, spreading and transmitting light into two directions or diffracting, spreading and reflecting light in one direction.
摘要:
In a reflector comprising a reflecting film formed on a surface having depressions and protrusions, wherein each of the depressions and protrusions has a vertex and is composed of a curved surface formed so as to be convex up or convex down and a surrounding portion including a valley or a ridge surrounding the curved surface with an inflection point of the curved surface serving as a boundary between the curved surface and the surrounding portion; and wherein when the curved surface is convex up, the inflection point is on the valley side of the midpoint between the vertex and the valley, whereas when the curved surface is convex down, the inflection point is on the ridge side of the midpoint between the vertex and the ridge.