核心参数
组件类别: 光学元件
ASAHI SPECTRA天文二向色分束器 Dichroic beam splitters
Dichroic beam splitters are getting more important for state-of-the-art spectro-graphs such as Dark Energy Spectroscopic
Instrument (DESI), Prime Focus Spectrograph (PFS), or multi-channel CCD cameras to take images in different colours simultaneously.
Dichroic beam splitters split the incident beam to two directions, therefore give the influence to the performance of at least
two or more cameras in terms of wavefront error, throughput, and available wavelength range.
ASAHI SPECTRA天文二向色分束器
Essential requirements for astronomical dichroic beam splitters are as follows.
High reflection in (broad) band
High transmission in (broad) band
Both contribute the high overall throughput of the instrument.
Sharp transition from reflection to transmission
It contributes to minimize unavailable wavelength range.
Key technique is to reduce the separation of p and s-polarization
at specified angle of incidence.
Minimized reflected wavefront error *after coating*
Minimized transmitted wavefront error *after coating*
Both contribute the image quality of the instrument.
There are few vendors in the world that can achieve all the requirements, a~e at the same time.
Asahi is one of potential vendors to provide such dichroic beam splitters with these performances.
We were successful in the fabrication of 390 mm x 365 mm, largest ever astronomical dichroic beam splitter for PFS in 2015.
The dichroic met all the hard specifications required by PFS project.
ASAHI SPECTRA天文二向色分束器曲线
企业名称
努美(北京)科技有限公司
企业信息已认证
企业类型
有限责任公司(自然人独资)
信用代码
911101070695525752
成立日期
2013-06-04
注册资本
1000万元
经营范围
技术开发、技术推广、技术转让、技术咨询、技术服务;销售实验室设备、仪器仪表、照明器具、光学仪器、电子产品、计算机、软件及辅助设备、机械设备、文化用品:维修计算机、仪器仪表:代理进出口、货物进出口、技术进出口。(市场主体依法自主选择经营项目,开展经营活动;依法须经批准的项目,经相关部门批准后依批准的内容开展经营活动;不得从事国家和本市产业政策禁止和限制类项目的经营活动。)
努美(北京)科技有限公司
公司地址
北京市石景山区鲁谷路51号院泰禾长安中心3号楼A塔12层1208
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