发明名称 |
POLARIZING HOLOGRAM ELEMENT |
摘要 |
PROBLEM TO BE SOLVED: To obtain stable operation and multifunction by keeping the region of a polarizing hologram element. SOLUTION: In the polarizing hologram elements having different diffraction efficiencies and transmittances depending on the polarization direction of laser light, the polarizing hologram is disposed in the peripheral region of the elements outside of the effective radius where the laser light passes. |
申请公布号 |
JP2003043235(A) |
申请公布日期 |
2003.02.13 |
申请号 |
JP20010234083 |
申请日期 |
2001.08.01 |
申请人 |
RICOH CO LTD |
发明人 |
SUZUDO TAKESHI;OUCHIDA SHIGERU |
分类号 |
G02B5/18;G02B5/30;G02B5/32;G02B27/28;G03H1/26;G11B7/135 |
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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