摘要:
A high uniformity diffuser is provided, wherein a light emission surface of the diffuser is added with prismatic lenses, such that a passage of light is changed through refraction or reflection caused when the light of lamps passes through the lens, in order to achieve an effect of scattering the light.
摘要:
A diffusion sheet structure in the direct type backlight module with anti-UV rays function and its manufacturing method discloses a diffusion sheet in the backlight module applied to TFT-LCD TV, and plural layer of the diffusion sheet made by a method of a multi-layer co-extrusion. The diffusion sheet advocates that while producing diffusion layer, at least a ultra-violet rays absorption layer set on the surface of diffusion layer at the same time to achieve insulating ultra-violet rays directly irradiated on the diffusion sheet and to avoid yellow and pyrolysis phenomenon occurred on the diffusion sheet. These results in avoiding the deviation caused from color temperature and chromaticity coordinate of TFT-LCD TV because of yellow diffusion sheet, then to achieve the purpose of improving product quality and materials lifespan.
摘要:
A structure of direct type backlight module with high uniform emitting light explores a design of lenticular lens of diffusing plate. The lenticular lens is against the central location of light source, where the light of lamp is scattered and the curvature of said lenticular lens far away light source is enlarged, then to reduce the scatter effect and achieve uniformity. The other lenticular lens also can be designed for light location and distance. Each lenticular lens is against light location, and incident light can be reflected through the angle of microstructure surface at the entrance facet, but farther location can be resulted in total refraction due to large inclined angle, and diminishing the transmission light of light source then influencing the uniformity, finally reducing total reflection of wide angle.
摘要:
Provided is a high-shielding reflective film, and its manufacturing method. This film is fabricated from an optical reflective film and a polarizer. The optical reflective film and the polarizer are combined by a means of a specific scheme. The optical reflective film is formed by stacking multiple layers of dielectric optical interference films with different materials. The optical reflective film particularly applies a principle of optical interference to reflect the most of the incident light, and allow some transmission. The polarizer is to absorb half of the incident light, and allow the other half to pass through. Since the characteristics of reflection between the reflective film and the polarizer are different, the reflectance difference therefor may increase. By which, the high-shielding reflective film achieves a one-way mirror with anti-peep effect since it substantially increases the reflectance difference among the incident lights from the various directions.
摘要:
A composite diffuser structure includes a transparent layer having a light-entering surface and a light-emitting surface, a lenticular structure having a plurality of lenticular lens formed on the light-emitting surface, and a plurality of refection structures located on the light-entering surface. Each of the lenticular lenses has a first width. There is an opening between two adjacent reflection structures. Each of the openings has a second width. Thereby, the light beam enters into the transparent layer via the opening to increase the light efficiency. By using the diffuser layer located above the lenticular structure, the view angle can be adjusted.
摘要:
An anti-glare optical module includes a substrate unit and a thin film unit. The thin film unit is disposed on the top surface of the substrate unit. The thin film unit has a base surface that has a height relative to the top surface of the substrate unit, the thin film unit has a plurality of convex structures, each convex structure has a curvature radius, the curvature radiuses of every two adjacent convex structures are different, a plurality of lower points each formed between every two convex structures and on the base surface, and each convex structure has an upper point. Therefore, the thin film unit has a good scattering effect for reflective light, can maintain the excellent transmittance and can reduce the flicker points by the convex structures, so that using the convex structures can prevent the eyes of the user from being effected by flicker points.
摘要:
Asymmetric light diffuser and the methods for manufacturing the same are provided. The diffuser is preferably a transparent film made by a stress-stretch process. Particularly, a substrate doped with variant beads is formed as an anisotropic film layer after the stress-stretch process, so that the characteristics with birefringence and diffusion are incorporated. Further the asymmetric relief structure is formed on the surface of substrate by means of extrusion or co-extrusion process. A uniform light and anisotropic refraction can be formed through the diffuser, and even the partial polarization scattering can be formed due to the asymmetric refraction. The preferred embodiment of the diffuser includes a first step of preparing the mold for forming the basic surface structure of the asymmetric diffuser. Further, the substrate with surface micro-structure is formed by a roll-to-roll process. After that, the inside variant refractions and structure deformation are formed under the stress-stretch process.
摘要:
A high-brightness diffusion plate with trapezoid lens applied to a direct-type backlight module is disclosed. The high-brightness diffusion plate with trapezoid lens according to the present invention consists of a diffusion plate and a plurality of trapezoid lens disposed on at least one side of the diffusion plate for improving light efficiency and diffusion effect of the diffusion plate. By the diffusion plate with trapezoid lens, the direct-type backlight module provides better light output as well as more uniform brightness. Moreover, the diffusion plate of the present invention is used in combination with all or part of optical film. The optical film includes brightness enhancement film (BEF), an upper diffuser sheet and an lower diffuser sheet. The diffusion plate is made from plastic. By extrusion, the diffusion plate and the plurality of trapezoid lens are easily processed to form an integral. Therefore, the direct-type backlight module has better light output efficiency with lower cost.
摘要:
A direct type backlight module with a diffuser plate and its manufacturing method for application to an LCD TV is provided. The diffuser plate has a plurality of columnar lenticular lens surfaces for scattering incident light to increase its light uniformity and reducing the quantity of light dispersant in the diffuser plate in the range of from 30% to 50% to increase light transmission ratio. Through the use of vertical or horizontal lenticular lenses of at least one columnar lenticular lens surface the diffusion degree in every direction is adjusted.
摘要:
A structure of direct type backlight module with high uniform emitting light explores a design of lenticular lens of diffusing plate. The lenticular lens is against the central location of light source, where the light of lamp is scattered and the curvature of said lenticular lens far away light source is enlarged, then to reduce the scatter effect and achieve uniformity. The other lenticular lens also can be designed for light location and distance. Each lenticular lens is against light location, and incident light can be reflected through the angle of microstructure surface at the entrance facet, but farther location can be resulted in total refraction due to large inclined angle, and diminishing the transmission light of light source then influencing the uniformity, finally reducing total reflection of wide angle.