公开(公告)号：EP0440443A3

公开(公告)日：1991-10-09

申请号：EP91300715.9

申请日：1991-01-30

Applicant: SEQUA CORPORATION

Inventor： Stearns, Thornton ,  Sarkar, Subhash

IPC: G01N21/47

CPC classification number: G01J3/42 ,  G01J3/0221 ,  G01J3/1838 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2003/421 ,  G01J2003/425 ,  G01N21/474 ,  G01N2021/4742

Abstract: A reflectometer (10) for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer (10) is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample (30) to be measured is illuminated by a focused light source (120) at an angle of 45° to its surface. The light diffusely reflected about the normal to the sample (30) falls on a small round bundle (200), the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit (230) for a concave holographic diffraction grating (230) spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.

公开(公告)号：EP0440443A2

公开(公告)日：1991-08-07

申请号：EP91300715.9

申请日：1991-01-30

Applicant: SEQUA CORPORATION

Inventor： Stearns, Thornton ,  Sarkar, Subhash

IPC: G01N21/47

CPC classification number: G01J3/42 ,  G01J3/0221 ,  G01J3/1838 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2003/421 ,  G01J2003/425 ,  G01N21/474 ,  G01N2021/4742

Abstract: A reflectometer (10) for measuring absorption of light in selected regions of the light spectrum by a diffuse reflector. The reflectometer (10) is adapted to precisely measure absorption resulting from the constituents present in body fluids. The sample (30) to be measured is illuminated by a focused light source (120) at an angle of 45° to its surface. The light diffusely reflected about the normal to the sample (30) falls on a small round bundle (200), the fibers are arranged into a narrow rectangle. This rectangle forms the entrance slit (230) for a concave holographic diffraction grating (230) spectrally separated over a flat field suitable for recording the spectrum on film or on an array of discrete detectors.

Abstract translation: 一种用于通过漫反射器测量光谱的选定区域中的光的吸收的反射计（10）。 反射计（10）适于精确地测量由体液中存在的组分产生的吸收。 要被测量的样品（30）被聚焦光源（120）以与其表面成45度的角度照射。 围绕样品（30）的法线漫反射的光落在小的圆形束（200）上，纤维被布置成窄的矩形。 该矩形形成用于在适合于在胶片上或在离散检测器阵列上记录光谱的平坦场上光谱分离的凹面全息衍射光栅（230）的入口狭缝（230）。