EP2443493B1 INTERFERENCE FILTERS WITH HIGH TRANSMISSION AND LARGE REJECTION RANGE FOR MINI-SPECTROMETER
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基本信息:
- 专利标题： INTERFERENCE FILTERS WITH HIGH TRANSMISSION AND LARGE REJECTION RANGE FOR MINI-SPECTROMETER
- 申请号：EP10730225.9 申请日：2010-06-11
- 公开(公告)号：EP2443493B1 公开(公告)日：2018-09-26
- 发明人： MEIJER, Eduard, Johannes , TIMMERING, Cornelis, Eustatius
- 申请人： Philips Lighting Holding B.V.
- 申请人地址： High Tech Campus 45 5656 AE Eindhoven NL
- 专利权人： Philips Lighting Holding B.V.
- 当前专利权人： SIGNIFY HOLDING B.V., NL
- 当前专利权人地址： SIGNIFY HOLDING B.V., NL
- 代理机构： van Eeuwijk, Alexander Henricus Waltherus
- 优先权： EP09162972 20090617
- 国际公布： WO2010146510 20101223
- 主分类号： G02B5/28
- IPC分类号： G02B5/28 ; G01J3/51
摘要：
The invention relates to an interference filter (100) for receiving an incident light (135) and selecting a light component of the incident light to be transmitted (115). The interference filter (100) includes a metal mirror (110), a dielectric mirror (130), and a spacer (120) placed between the metal mirror (110) and the dielectric mirror (130). The metal mirror (110) and the dielectric mirror (130) are configured to enable optical interference in the spacer (120) to select the light component of the incident light to be transmitted (115). Using one metal mirror and one dielectric mirror allows achieving a spectral response with high finesse and large rejection band while reducing the total number of layers in the filter and reducing the number of additional filters necessary for removing transmitted side bands, relative to prior art approaches.