A super macro brightness enhancement film and light source gain module

Abstract

The invention discloses an ultra-micro-range brightness enhancement film and a light source gain module. The lower surface of the ultra-micro-range brightness enhancement film is a plane, and a plurality of sawteeth which are regularly arranged and are triangular in cross section are formed on the upper surface of the ultra-micro-range brightness enhancement film. The ultra-micro-range brightnessenhancement film is made of polymethyl methacrylate or acrylonitrile-butadiene-styrene co-polymers, and the refractive index of the ultra-micro-range brightness enhancement film is 1.47-1.54. According to the ultra-micro-range brightness enhancement film disclosed by the invention, the problem of light source virtual consumption generated when light rays penetrate through the ultra-micro-distancebrightness enhancement film is remarkably improved. The utilization rate and the light uniformity of the light source are improved. Meanwhile, the full-wave-band illumination effect is achieved, and the imaging effect of the CIS is finally improved.

Description

technical field [0001] The invention relates to the technical field of optical concentrating systems, in particular to a super macro-pitch brightness enhancement film and a light source gain module formed based on the super macro-pitch brightness enhancement film. Background technique [0002] The contact image sensor (Contact Image Sensor, CIS), used in the scanner, is to closely arrange the photosensitive units to directly collect the light information reflected by the scanned manuscript. CIS consists of LEn light source array (Leo light source), micro self-focusing rod lens array (Rod Lens array), photoelectric sensor array (CMOS image sensor array) and its circuit board, protective glass, interface, housing and other parts. Wherein, the top of the micro self-focusing rod lens array (Rod Lensarray) is provided with an ultraviolet light source gain module. For the specific installation position of the ultraviolet light source gain module, please refer to the Chinese inven...

AI Technical Summary

Problems solved by technology

Due to the characteristics of the light emitting and diverging light of the light source, the direct-down array lighting will produce a "ripple effect" (Ripple Effect) in the horizontal direction, resulting in a large loss of energy balance of the vertically diverging light, low efficiency of the light source (that is, light loss), and insufficient space to simultaneously The light source is attached to the place to overcome the continuous wave effect, and it is placed with a microstructured diffusion film to rectify the original large-angle light and guide it straight to meet the lighting needs of ultraviolet, visible and infrared light.

[0004] In order to improve the problem of wasted light source and use optical prism film BEF (Prism Film-Brightness Enhancement Film) as a soft plastic optical material without increasing power consumption, it uses light refraction and dense media to enter sparse media at a specific angle. The occurrence of total reflection characteristics and the selection of materials make the refractive index change the light path and change the light direction of the light source, which can realize the LED lighting function, but the disadvantage of the BEF film in the prior art is that its energy is only suitable for short distances. At the same time, in the prior art The BEF film cannot achieve the full-band lighting effect, which leads to the high limitation of CIS on the light source

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