公开(公告)号：JPS6321603A

公开(公告)日：1988-01-29

申请号：JP16599286

申请日：1986-07-15

Applicant: KAO CORP

Inventor： OGAWA YUKIO ,  NODA MASAHIDE ,  YAMANAKA MINORU

IPC: G02B5/20

Abstract: PURPOSE:To enable the formation of a thin film whose sharpness in a prescribed wavelength region lowers selectively by specifying the optical path difference between the filler-contg. part of a thin film formed with a composition can be filler-free part. CONSTITUTION:A transparent filler 2 such as SiO2 is dispersed in a soln. of a transparent org. polymer such as acrylic resin or in transparent oil 1 such as octyldodecyl myristate. The polymer or oil 1 and the filler 2 are selected to as to satisfy formula I when a thin film is formed on a light transmitting substrate 3 and to satisfy formula II when a thin film is formed on a light reflecting substrate 3. In the formulae I, II, lambda is a prescribed wavelength, Nor is the refractive index of a thin film formed with the polymer or oil 1, Nair is the refractive index of air, Nce is the refractive index of the filler 2, d1 is the thickness of the polymer or oil 1 on the filler 2, d2 is the diameter of the filler 2 and m=1-4.