Optical material, optical component, and apparatus
A technology of optical materials and optical components, applied in optical elements, optics, nonlinear optics, etc., can solve the problem of insufficient improvement of discrimination and achieve the effect of improvement of discrimination
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Embodiment approach 1
[0046] figure 1 It is a schematic sectional view of the optical sheet which consists of the optical material of Embodiment 1. This optical sheet 1 includes a medium 1a and a plurality of crystal materials 1b dispersed in the medium 1a.
[0047] The medium 1a has a property of being transparent to visible light. Visible light refers to light in a wavelength region whose lower limit is 360 nm to 400 nm and whose upper limit is 760 nm to 830 nm, according to JISZ8120:2001, for example. Hereinafter, visible light may be described only as light. The medium 1 a may be transparent as long as the transmittance of visible light is about 50% or more, preferably 80% or more, and more preferably 90% or more.
[0048] The crystalline material 1b is a single crystal or polycrystal having transparency to visible light, and has birefringence. Such as figure 1 As shown, the plurality of crystalline materials 1b include crystalline materials 1b each having a different shape and size. In a...
Embodiment 1 to 8
[0082] As Examples 1 to 8 of the present invention, using PMMA or PS as a medium polymer and calcium carbonate as a crystalline material, an optical sheet was produced in the following steps.
[0083] First, calcite (NARIKA Corporation, D20-1856-02) made of calcium carbonate with a length of about 3 cm to 4 cm on one side is pulverized, and the pulverized product is sieved to classify into one side lengths of 0 μm to 25 μm. , 25μm to 53μm, 53μm to 106μm three kinds of grain distribution range.
[0084] Next, any one of the crystal grains after classification, and polymer particles of PMMA (Wako Pure Chemical Industries, 138-02735) or PS (Wako Pure Chemical Industries, Ltd.) are dropped into dichloromethane (Wako Pure Chemical Industries, Ltd. company, 135-02446 (special grade reagent)) or ethyl acetate (Wako Pure Chemical Industry Co., Ltd., 051-00351 (special grade reagent)), it was stirred with a vibrator, thus, the polymer was completely Dissolve to make a polymer solution...
Embodiment 9、10、 comparative example 1
[0092] As Examples 9 and 10 of the present invention, and Comparative Example 1, using PMMA as a dielectric polymer and fluorinated graphite as a crystal material, optical sheets were fabricated according to the following procedure.
[0093] First, 0.05 g (Example 9), 0.01 g (Example 10), or 0 g (Comparative Example 1) of fluorinated graphite with an average particle diameter of 5 μm, and 0.95 g of PMMA polymer particles were dropped into 5 g of dichloro In a solvent of methane, the polymer was completely dissolved by stirring with a shaker to prepare a polymer solution.
[0094] Next, using a glue coater set at a height of 0.5 mm, the prepared polymer solution was spread on a horizontal glass plate whose surface was treated with silane to form a sheet, left to stand, and the solvent was evaporated by natural drying. Thus, the optical sheets of Examples 9, 10, and Comparative Example 1 were produced. The concentrations of graphite fluoride in the optical sheets of Examples 9,...
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Abstract
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