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    Modified concentric spectrograph
    201.
    发明授权
    Modified concentric spectrograph 失效
    改进的同心光谱仪

    公开(公告)号：US5995221A

    公开(公告)日：1999-11-30

    申请号：US884417

    申请日：1997-06-27

    Applicant: Warren S. Slutter ,  Wu Jiang ,  Alain F. R. Thevenon ,  Viviane D. Millet ,  Jeremy J. Goldstone

    Inventor： Warren S. Slutter ,  Wu Jiang ,  Alain F. R. Thevenon ,  Viviane D. Millet ,  Jeremy J. Goldstone

    IPC: G01J3/02 ,  G01J3/18 ,  G02B5/18 ,  G02B13/00 ,  G01J3/28

    CPC classification number: G01J3/18 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262

    Abstract: A modified concentric spectrograph for diffracting light with high stray light rejection without astigmatism is provided. The modified spectrograph includes a grating, a lens, and at least one entrance port and one exit port. The grating has a concave surface and a meridian plane with a first side and a second side. The lens has a substantially planar surface and a convex surface. Preferably, the convex and concave surfaces are substantially concentric. The ports are substantially located on different sides of the meridian plane near a focal plane of the spectrograph. The position of a focal plane may be modified using an optically transmissive triangular prism with a reflective surface, and an optically transmissive block. The position of a focal plane may further be modified with one or more optically transmissive plates. Methods for using the spectrograph are also provided.

    Abstract translation: 提供了一种用于衍射具有高散射光抑制而不散光的改进的同心光谱仪。 改进的光谱仪包括光栅，透镜和至少一个入口端口和一个出口。 光栅具有凹面和具有第一面和第二面的子午面。 透镜具有基本平坦的表面和凸面。 优选地，凸表面和凹面基本上是同心的。 端口基本上位于子午线平面附近的光谱仪的焦平面的不同侧。 可以使用具有反射表面的光学透射三角形棱镜和光学透射块来修改焦平面的位置。 焦平面的位置可以进一步用一个或多个光学透射板修改。 还提供了使用光谱仪的方法。

    Optical transmission spectrometer
    202.
    发明授权
    Optical transmission spectrometer 失效
    光传输光谱仪

    公开(公告)号：US4930865A

    公开(公告)日：1990-06-05

    申请号：US267309

    申请日：1988-11-04

    Applicant: Andres J. Dosmann

    Inventor： Andres J. Dosmann

    IPC: G01J3/08 ,  G01N21/25 ,  G02B27/10 ,  G02B27/12

    CPC classification number: G01J3/10 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0208 ,  G01J3/0256 ,  G01J3/0262 ,  G01J3/42 ,  G01N21/255 ,  G02B27/1006 ,  G02B27/126 ,  G01N2021/1742

    Abstract: An optical transmission spectrometer for transmission measurements of absorbing and scattering samples includes light sources mounted parallel to each other in a holder. The beams of light eminating from the light sources are directed through a beam-combiner. The beam-combiner includes a first refractive surface at an angle of incidence of 45.degree.. The first refractive surface refracts light toward a common axis. The beam-combiner includes a second refractive surface parallel to the first refractive surface for refracting the beam of light along a common axis parallel to the original direction of the beam of light. The beam-combiner can include additional refractive surfaces for other beams of light to combine the beams of light into a primary beam. The includes a collimating tube extending along the common axis for baffling stray light and directing the primary beam through a sample. A second collimating tube is provided on the side of the sample opposite the first collimating tube for baffling stray light passing through the sample. The second collimating tube directs the primary beam to a detector package mounted in a holder, where the detector viewing area of the sample is limited to that of the primary beam.

    Attenuator for stray light produced in monochromators
    203.
    发明授权
    Attenuator for stray light produced in monochromators 失效
    在单色仪中产生的杂散光的衰减器

    公开(公告)号：US4300835A

    公开(公告)日：1981-11-17

    申请号：US146728

    申请日：1980-05-02

    Applicant: Dieter Schiemann ,  Wolfgang Witte

    Inventor： Dieter Schiemann ,  Wolfgang Witte

    IPC: G01J3/18

    CPC classification number: G01J3/02 ,  G01J3/0262 ,  G01J3/18

    Abstract: Stray light produced in a monochromator by the diffuse reflection of the incoming light beam specularly reflected from the surface of the diffraction grating is practically eliminated by interposing a black glass "absorbent-reflector" in the path of the specularly reflected beam. The small percentage of radiation that is not absorbed by the absorbing glass is reflected to an opposite blackened wall which diffuse reflects an extremely small percentage of the beam back to the absorbent-reflector where a very negligible part is returned to the grating surface and eventually to the monochromator exit slit.

    Abstract translation: 通过在衍射光栅表面镜面反射的入射光束的漫反射产生的杂散光实际上通过在镜面反射光束的路径中插入黑色玻璃“吸收反射器”来消除。 不被吸收玻璃吸收的较小百分比的辐射被反射到相对的黑化壁，其漫反射反射非常小百分比的光束到吸收反射器，其中非常可忽略的部分返回到光栅表面，并且最终到 单色仪出口狭缝。

    Rapid scan spectral analysis system utilizing higher order spectral reflections of holographic diffraction gratings
    204.
    发明授权
    Rapid scan spectral analysis system utilizing higher order spectral reflections of holographic diffraction gratings 失效
    利用全息衍射光栅的高阶光谱反射的快速扫描光谱分析系统

    公开(公告)号：US4264205A

    公开(公告)日：1981-04-28

    申请号：US940360

    申请日：1978-09-07

    Applicant: Isaac J. Landa

    Inventor： Isaac J. Landa

    IPC: G01J3/02 ,  G01J3/06 ,  G01J3/10 ,  G01J3/12 ,  G01J3/18 ,  G01J3/26 ,  G01J3/28 ,  G01N21/31

    CPC classification number: G01J3/06 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0221 ,  G01J3/0232 ,  G01J3/024 ,  G01J3/0262 ,  G01J3/10 ,  G01J3/26 ,  G01J3/2889 ,  G01N21/314 ,  G01J2003/1273 ,  G01J2003/2853 ,  G01J3/1838

    Abstract: An improved optical system is disclosed for rapid, accurate spectral analysis of the reflectivity or transmissivity of samples. A concave holographic diffraction grating oscillated at high speed is utilized to provide a rapid scanning of monochromatic light through a spectrum of wavelengths. The grating is positively driven at very high speed. The rapid scan by the grating enables the reduction of noise error by averaging over a large number of cycles. It also reduces the measurement time and thus prevents sample heating by excessive exposure to light energy. A filter wheel having opaque segments is rotated in the optical path and is synchronous with the grating. The filter wheel is divided into two arcuate segments separated by the opaque segments arranged approximately 180 degrees apart. One arcuate segment of the wheel transmits only first order light. The other arcuate segment transmits only second order light. Separate photodetectors are employed during infrared analysis of samples for detecting first order and second order wavelength transmissions and an electronic decoder apparatus is utilized for switching between detectors.

    Abstract translation: 公开了一种改进的光学系统，用于对样品的反射率或透射率进行快速，准确的光谱分析。 利用以高速振荡的凹面全息衍射光栅，通过一系列波长快速扫描单色光。 光栅以非常高的速度被正向驱动。 光栅的快速扫描使得能够通过大量循环的平均来减少噪声误差。 它还减少测量时间，从而防止过度暴露于光能的样品加热。 具有不透明段的滤光轮在光路中旋转并与光栅同步。 过滤轮被分成两个弧形段，这些弧段由分开大约180度的不透明段分开。 车轮的一个弧形段仅传送一级光。 另一个弧形段仅传送二阶光。 在用于检测一阶和二阶波长传输的样本的红外分析期间采用单独的光电检测器，并且使用电子解码器装置在检测器之间切换。

    INFRARED LIGHT SENSING DEVICE
    205.
    发明公开
    INFRARED LIGHT SENSING DEVICE 审中-公开

    公开(公告)号：US20240219233A1

    公开(公告)日：2024-07-04

    申请号：US18532673

    申请日：2023-12-07

    Applicant: Taiwan-Asia Semiconductor Corporation

    Inventor： Yen-Hsiang CHANG ,  Sheng-Wei CHEN ,  Tzu-Hui LIN

    IPC: G01J3/10 ,  G01J3/02

    CPC classification number: G01J3/108 ,  G01J3/0262 ,  G01J3/0291

    Abstract: An infrared light sensing device includes a substrate, a light source module, a light sensing module, a barrier structure and a protective cover. The light source module, the light sensing module and the barrier structure are arranged on the substrate, and the barrier structure is used to isolate the light source module and the light sensing module. The protective cover is bonded to the barrier structure and includes a plate, a first bandpass optical film and a second bandpass optical film. The first bandpass optical film is disposed on the plate and faces the light source module, and the first bandpass optical film corresponds to a first infrared light spectrum range. The second bandpass optical film is disposed on the plate and faces the light sensing module, the second bandpass optical film corresponds to a second infrared light spectrum range located within the first infrared light spectrum range.

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