发明名称 |
TRANSPARENT BAGLYSPROJEKTIONSSKAERM |
摘要 |
A transparent rear projection screen has a lense system for paralleling light arriving from behind. On the front side of the screen rectilinear lenses extending in the vertical direction in the position of use of the screen are provided the sides of which form a small angle of inclination with respect to the normal to the screen. The sides are totally reflecting to light arriving from behind and between the reflecting lenses further lenses are arranged. In order to compensate for color shading by the projection of differently colored television images upon the rear side of the screen, the tops of the reflecting lenses are so shaped and their totally reflecting sides have such an inclination with respect to the normal to the screen, and moreover have such a width that at the most 80% of the light which from behind enters the reflecting lenses is emitted through the tops of the lenses, and that at least 20% of said entering light is emitted through the sides of the lenses. |
申请公布号 |
DK156188(B) |
申请公布日期 |
1989.07.03 |
申请号 |
DK19830002090 |
申请日期 |
1983.05.10 |
申请人 |
SCAN SCREEN PRODUCTION A/S |
发明人 |
CLAUSEN, ERIK;CLAUSEN, JOHANNES |
分类号 |
G03B21/625;H04N5/74 |
主分类号 |
G03B21/625 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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