| 发明名称 |
SEAMLESS MASTER AND METHOD OF MAKING SAME |
| 摘要 |
Hollow, cylindrical, seamless metal master (604) for producing seamless diffuser sheets of preselected length and width. Additional aspects of the invention include a hollow cylindrical seamless invertable elastomeric maste r (402) and method of making the same and an apparatus and process for effecti ng variable diffuser recording in photosensitive medium. |
| 申请公布号 |
CA2421527(A1) |
申请公布日期 |
2002.03.14 |
| 申请号 |
CA20012421527 |
申请日期 |
2001.08.29 |
| 申请人 |
PHYSICAL OPTICS CORPORATION |
发明人 |
SAVANT, GAJENDRA D.;KAISER, ED;WANG, SAN ZHUANG;LEE, KANG S. |
| 分类号 |
G02B6/00;B29C33/38;B29C39/02;B29C41/08;B29C41/12;B29D11/00;F21V8/00;G02B5/02;G02B5/32;G02F1/13357;G03F7/38;G03F7/40;(IPC1-7):B29D17/00;G03B21/60;G03H1/32 |
主分类号 |
G02B6/00 |
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