2results about How to "Does not affect optical performance" patented technology

The invention provides an anti-optical crosstalk structure of a double-layer light guide plate and a preparation method of the anti-optical crosstalk structure. The structure comprises an upper-layer light guide plate and a lower-layer light guide plate which are oppositely arranged in parallel, and an air layer is formed between the two light guide plates; the SiO2 plating layer is arranged on the lower surface of the upper-layer light guide plate and / or the upper surface of the lower-layer light guide plate; the side edge light blocking structure is arranged on the light incident side edge of the upper-layer light guide plate and / or the lower-layer light guide plate. Interface transmission optical crosstalk caused by Fresnel reflection is inhibited through the SiO2 plating layer, small-angle light at the edge of a light source is intercepted through the side light blocking structure, and optical crosstalk is inhibited from two dimensions through the synergistic effect of the SiO2 plating layer and the side light blocking structure; meanwhile, square OCA glue is adopted to be attached to non-display areas on the peripheries of the two layers of light guide plates, transparent supporting microbeads are evenly distributed on the edges of the inner sides of the non-display areas, and it is guaranteed that the thickness of an air layer is even and stable. The vehicle-mounted optical crosstalk preventing device is compact in structure and good in optical crosstalk preventing effect, the lighting optical crosstalk rate of the upper layer can be reduced to 3.2%, the lighting optical crosstalk rate of the lower layer can be reduced to 1.8%, and the use requirement of the vehicle-mounted harsh environment is met.

This invention relates to the field of optical films and optical inspection equipment, specifically to a polarizer with traceability and an optical inspection device. The traceable polarizer includes a surface protective film laminated to the upper TAC layer. The outer surface of the surface protective film has an invisible inkjet code, which can be located within or outside the effective display area of ​​the polarizer. Under illumination by at least one of ultraviolet, near-infrared, or narrow-band visible monochromatic light sources, the invisible inkjet code emits visible light and can be clearly identified. The optical inspection device is adapted to detect the invisible inkjet code on the polarizer. This invention solves the problem of untraceable polarizers after the release film is removed in the prior art, achieving precise traceability of the polarizer throughout its entire lifecycle, from manufacturing and customer processing to final assembly.