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Large Field of View, High Numerical Aperture Compound Objective Lens With Two Pairs of Identical Elements and Near IR Spectrometer Containing Two Such Compound Lenses
Large Field of View, High Numerical Aperture Compound Objective Lens With Two Pairs of Identical Elements and Near IR Spectrometer Containing Two Such Compound Lenses
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机译:大视场,具有两对相同元件的高数值孔径复合物镜以及包含两个复合透镜的近红外光谱仪
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摘要
An apparatus consisting of two pairs of identical lenses which is suitable as a compound objective lens for high numerical aperture imaging is disclosed. The compound lens also has a wide field of view as a fraction of the compound lens focal length. By suitable choice of lens materials, well corrected near infrared imaging can be achieved. When two such compound lenses together with a diffraction grating are assembled into a spectrometer, excellent wavelength resolution in the near infrared can also be obtained.
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