Polarization-maintaining optical film and polarization-maintaining prism film
A prismatic film, optical film technology, applied in optics, prisms, optical components, etc., can solve problems such as depolarization, and achieve the effect of improving utilization.
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Embodiment 1
[0134] The invention provides a polarization maintaining optical film, such as Figure 7 As shown, the polarization-maintaining optical film is a polarization-maintaining diffusion film, the first structural layer 51 is an atomized layer DL (Diffusion layer), and the second structural layer 52 does not exist. The thickness T of the base layer 50 is 250 μm, the material of the polarization maintaining base layer is selected from PC, optically isotropic, the degree of polarization >99%, and the haze of the polarization maintaining diffusion film is 98%. The haze of the first atomized layer is 98%, and the type of the atomized layer is particle coating, which is composed of transparent polymer resin PU and transparent polymer particles PMMA, and the particle size d is 5-15 μm. The refractive index na of the transparent polymer resin is 1.5. The polarization maintaining degree of the polarization maintaining diffusion film is 82%.
Embodiment 2
[0136] like Figure 7 As shown, the polarization maintaining optical film provided by the present invention includes a first structural layer 51, a polarization maintaining base layer 50 and a second structural layer 52, the first structural layer is located on the upper surface of the base layer 50, and the second structural layer is located on the base layer 50 On the lower surface, the polarization-maintaining optical film is a polarization-maintaining diffusion film, the first structural layer 51 is an atomized layer, and the second structural layer 52 is an atomized layer. The thickness T of the base layer 50 is 250 μm, the material of the polarization maintaining base layer is selected from PC, optically isotropic, the degree of polarization >99%, and the haze of the polarization maintaining diffusion film is 98%. The haze of the first atomized layer is 98%, and the type of the atomized layer is particle coating, which is composed of transparent polymer resin PU and tran...
Embodiment 3-20
[0138] For the polarization maintaining diffusion film provided in Example 1, other parameters are listed in Table 1.
[0139] Design parameters and optical properties of the polarization-maintaining diffusion film provided in Table 1 Examples 1-20
[0140]
[0141]
[0142] Note 1: T is the thickness of the polarization maintaining matrix layer.
[0143] As shown in Table 1, there are examples of polarization maintaining diffusion films with different materials and design parameters. It can be found that when the material of the substrate layer is the polarization-maintaining matrix such as PC, PMMA, TAC, COP, the polarization-maintaining degree of the prepared polarization-maintaining diffusion film is greater than 80%, and the thickness T has little influence. When the haze of the atomized layer decreases, the degree of polarization retention will increase, but the type of atomized layer, resin, and particle material have little effect on it. When the second structu...
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