基本信息:
- 专利标题： LIQUID-CRYSTAL ACHROMATIC PHASE MODULATOR
- 专利标题（中）：液晶无色相调节器
- 申请号：EP15701593.4 申请日：2015-01-09
- 公开(公告)号：EP3243103A1 公开(公告)日：2017-11-15
- 发明人： LIN, Yi-Hsin , CHEN, Hung-Shan , CHEN, Ming-Syuan
- 申请人： Essilor International (Compagnie Générale d'Optique) , Nikon Corporation
- 申请人地址： 147, rue de Paris 94220 Charenton-le-Pont FR
- 专利权人： Essilor International (Compagnie Générale d'Optique),Nikon Corporation
- 当前专利权人： NIKON CORPORATION
- 当前专利权人地址： NIKON CORPORATION
- 代理机构： Viering, Jentschura & Partner mbB Patent- und Rechtsanwälte
- 国际公布： WO2016111019 20160714
- 主分类号： G02F1/139
- IPC分类号： G02F1/139 ; G02F1/1347
摘要：
An achromatic phase modulator (100) adapted to modulate the phase of an incident beam of light (INCIDENT LIGHT) and to output the thus modulated light, the phase modulator (100) comprising a plurality of liquid crystal elements disposed in series on a light path of the incident light and a control unit (15) comprising a plurality of power sources (14) for applying drive electric signals to the liquid crystal elements, wherein the plurality of liquid crystal elements comprises at least a first and a second liquid crystal element groups (FIRST LIQUID CRYSTAL ELEMENT GROUP; SECOND LIQUID CRYSTAL ELEMENT GROUP), each group being composed of a pair of liquid crystal elements, the liquid crystal elements of the first and second group respectively being made of a first and a second liquid crystal material having a first and a second, different, refractive index wavelength dependence characteristic, the thicknesses (d1/2, d2/2) of the liquid crystal elements forming each group being equal.