Luminescent material, luminescent light-compensating film, retro-reflective light-compensating patch and road sign board
A technology of luminescent material and reflective sheet, applied in the field of road signs, can solve the problems of low spectral energy, discontinuous spectral wavelength of lamps, affecting the visual distance of the human eye, etc. The effect of the induction effect
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[0018] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0019] A kind of luminous material that can improve visual distance provided by the present invention, the theoretical chemical composition of described luminescent material is: M (1-x-y-z) al 2 o 4 :xEu 2+ , 2xDy, yR 3+ , zPr 3+ , wherein, M is one or more of Sr, Mg, Ca, Ba, R is one or more of La, Nd, Tb, the value of x is 0.005-0.03, and the value of y+z is 0.01-0.06 , z value is 0.0005~0.01.
[0020] The preparation method of the above-mentioned luminescent material is:
[0021] 1. The raw materials of the above-mentioned luminescent materials are prepared according to M (1-x-y-z) al 2 o 4 :xEu 2+ , 2xDy, yR 3+ , zPr 3+ The weighi...
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