发明名称 |
Diffractive optical element |
摘要 |
A diffractive optical element and a method to produce same is disclosed. The optical element comprises a base and at least first and second phase zones wherein the first phase zone comprises a first multiplicity of steps and the second phase zone comprises a second multiplicity of steps and wherein the first multiplicity and the second multiplicity of steps are different. The method to produce the diffractive optical element of the present invention includes the step of defining a collection of masks for creating stepped phase zones wherein at least one of the collection of masks partially masks out at least one phase zone such that the at least one phase zone will be partially etched.
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申请公布号 |
US5227915(A) |
申请公布日期 |
1993.07.13 |
申请号 |
US19910722372 |
申请日期 |
1991.06.25 |
申请人 |
HOLO-OR LTD. |
发明人 |
GROSSINGER, ISRAEL;KEDMI, JOSEPH |
分类号 |
G02B5/18 |
主分类号 |
G02B5/18 |
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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