PROJECTION SCREEN,申请号JP19820205465-传众专利搜索

PROJECTION SCREEN

申请公布号：JPS5995524(A)

申请号：JP19820205465

申请日期：1982.11.25

申请公布日期：1984.06.01

申请人：

NITSUKUPARU ENTAAPURAIZU:KK

发明人：NISHITANI TATSUROU

分类号：G03B21/60;(IPC1-7):03B21/60

主分类号：G03B21/60

摘要：PURPOSE:To use a projection screen at a light place by providing a screen surface with a pattern having projections and recesses irregularly and successively in the same direction and another projection and recess pattern at right angles, and forming numbers of fine projections and recesses for refracting and scattering incident light on the projection and recess surface. CONSTITUTION:A waveform (waviness pattern) which has irregular recessed parts 3 and projection parts 4 successively in the same direction as a diagonal direction, for example, from right down to left up is formed on the projection surface 2 of a (semi)transparent layer body 1 and the pattern having recessed parts 3' and projection parts 4' successively from left down to right upper is also formed similarly at right angles to obtain a screen where an image is formed by projecting light. Further, finer projections and recesses 5 are provided irregularly to surfaces of recessed parts 3 and 3' and projection parts 4 and 4' to refract and scatter the incident light to the surface. The projection and recess patterns are formed by embossing work, etc. Thus, the large-sized, easy-to-see screen which has no difference in brightness among the upper, lower, left, right, center, and circumferential part is obtained.