公开(公告)号：EP1144965B1

公开(公告)日：2004-11-24

申请号：EP00900491.2

申请日：2000-01-07

Applicant: Ibsen Photonics A/S

Inventor： IBSEN, Per, Eld ,  ROSE, Bjarke ,  RASMUSSEN, Michael

IPC: G01J3/18 ,  G01J3/28 ,  G01J3/02

CPC classification number: G01J3/00 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/0278 ,  G01J3/0294 ,  G01J3/18 ,  G01J3/2803

Abstract: A method and apparatus for measuring spectral information of light from at least one object (15); said apparatus comprising at least one light detecting means (34); and at least one transparent body (31) having a front side (F) including: an entrance surface (311) having positioned in or near thereof an entrance aperture means (30), and at least one reflecting surface (312); and said transparent body further having a back side (B) including: at least one reflecting surface (313) for reflecting light received from said entrance aperture means, and an exit surface (314); said detecting means being positioned in or near said exit surface; said first reflecting surface, said second reflecting surface, or both, having at least one diffractive optical element (32) and/or at least one focusing means (33). Such apparatus comprising more spectral channels, and such apparatus comprising distance sensing means.

Abstract translation: 用于测量来自至少一个物体的光的光谱信息的方法和装置包括至少一个光检测器和至少一个透明体。 透明体具有前侧，具有入口孔和至少一个反射面。 透明体还具有包括至少一个反射表面和出射表面的背面。 检测器位于出口表面附近。 前反射表面和后反射表面中的至少一个包括衍射光学元件，其被布置成接收来自孔的发散光。 聚焦元件将衍射光聚焦到出射表面。 该装置可以包括多个通道，并且还可以包括用于测量到物体的距离的装置。

公开(公告)号：WO2005005939A1

公开(公告)日：2005-01-20

申请号：PCT/IB2004/002226

申请日：2004-07-06

Applicant: IBSEN PHOTONICS A/S ,  BASTUE, Jens ,  HERHOLD-RASMUSSEN, Nicolai ,  RASMUSSEN, Michael ,  JESPERSEN, Ole

Inventor： BASTUE, Jens ,  HERHOLD-RASMUSSEN, Nicolai ,  RASMUSSEN, Michael ,  JESPERSEN, Ole

IPC: G01J3/18

CPC classification number: G01J3/02 ,  G01J3/0286 ,  G01J3/18

Abstract: Transmission spectrometers require low levels of background light so that the signal to noise ratio is increased, and also require stable performance over wide temperature ranges. Light reflected by the transmission grating can result in increased background levels. One approach to reducing the background level is to orient the transmissive diffraction grating so that light reflected by the grating is reflected out of the diffraction plane. The temperature-induced wavelength drift of a transmission spectrometer can be due to the frame upon which the transmission grating is mounted. The wavelength drift is reduced by allowing the thermal expansion of the grating to be independent of the frame.

Abstract translation: 透射光谱仪需要低水平的背景光，从而增加信噪比，并且在宽温度范围内也需要稳定的性能。 由透射光栅反射的光可导致背景增加。 降低背景水平的一种方法是使透射衍射光栅定向，使得由光栅反射的光被反射出衍射平面。 透射光谱仪的温度感应波长漂移可能是由于安装透射光栅的框架。 通过允许光栅的热膨胀独立于框架来减小波长漂移。

公开(公告)号：EP1400047A2

公开(公告)日：2004-03-24

申请号：EP02742455.5

申请日：2002-02-20

Applicant: Ibsen Photonics A/S

Inventor： ROSE, Bjarke ,  RASMUSSEN, Thomas ,  KHALFAOUI, Chaker ,  RASMUSSEN, Michael ,  BASTU, Jens ,  IBSEN, Per, Eld ,  PEDERSON, Claus

IPC: H04J14/02 ,  G02B6/34

CPC classification number: H04J14/0212 ,  G02B6/2713 ,  G02B6/2793 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/29383 ,  G02B6/3512 ,  G02B6/3514 ,  G02B6/4215 ,  H04B10/077 ,  H04B10/07955 ,  H04J14/02

Abstract: A wavelength division multiplexed device is based on a transmission grating spectrometer having at least two diffractive optical elements. The WDM device provides flexible use and may be widely applied in WDM systems. The device is useful for multiplexing and demultiplexing, channel monitoring, and for adding and dropping channels. The device provides programmability in use as an add/drop multiplexer.