发明名称 |
Coupling system for image projection |
摘要 |
In a video projector for projecting a video picture displayed on a Braun tube, the space between the Braun tube and a lens is filled with a medium having a refractive index substantially equal to those of both the glass faceplate of the braun tube and the material of the lens, and the medium is a silicon resin of the mixture of two liquids which is in liquid phase just after the mixing of two or three or above liquids but cured after lapse of a certain time into a gel state, and the lens is supported by a lens holder so that it can be moved freely along the optical axis within the lens holder.
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申请公布号 |
US4729031(A) |
申请公布日期 |
1988.03.01 |
申请号 |
US19840634559 |
申请日期 |
1984.07.26 |
申请人 |
HITACHI, LTD. |
发明人 |
SAITO, SHOBU;YOSHIZAKI, ISAO;IWAHARA, YOSHIAKI;OGUINO, MASANORI;SHUUGIZONO, OSAMU |
分类号 |
G02B3/10;G02B3/12;H01J29/89;H01J31/10;H04N5/74;(IPC1-7):H04N5/74 |
主分类号 |
G02B3/10 |
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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