发明名称 |
WAVELENGTH SELECTING MODULE AND WAVELENGTH SELECTING APPARATUS |
摘要 |
A wavelength selecting module includes a first collimator for collimating diverging light to generate a collimated light beam and a liquid crystal cell having a predetermined helical direction. The liquid crystal cell separates a light signal having a specific wavelength among a plurality of light signals of the collimated light beam into a left circularly polarized light and a right circularly polarized light, reflects one of the left and right circularly polarized light signals that has a same optical rotatory direction as the predetermined helical direction toward the first collimator in a first state. The liquid crystal cell passes the plurality of light signals of the collimated light beam in a second state. The liquid crystal cell changes between the first state and the second state in accordance with a change in a voltage applied thereto, thereby switching between selection and non-selection of light having the specific wavelength.
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申请公布号 |
CA2359267(A1) |
申请公布日期 |
2002.04.19 |
申请号 |
CA20012359267 |
申请日期 |
2001.10.18 |
申请人 |
NIPPON SHEET GLASS CO., LTD.;NANOX CORPORATION |
发明人 |
SATO, YOSHIRO;TAKAMI, MANABU |
分类号 |
G02F1/137;H04J14/02;(IPC1-7):H04J14/02;G02F1/25 |
主分类号 |
G02F1/137 |
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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