Integrated Fourier spectrometer
A spectrometer and Fourier technology, applied in interference spectroscopy, color/spectral characteristic measurement, spectrum investigation, etc., can solve the problems of slow measurement speed and complex structure, and achieve the effect of simplified structure, high speed and high sensitivity spectral analysis
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Embodiment 1
[0016] like figure 1 As shown, the first embodiment of the present invention adopts the beam splitting prism as a kind of approximately right-angle beam splitting prism, including the first A and the second B two planes coated with a reflective film that form an included angle with each other, and the included angle is approximately a right angle The acute angle is greater than 89° and less than 90°, for example, 90.5°, and the beam splitting plane bisects the included angle.
[0017] see figure 1 , the measured parallel light is divided into two parts by the beam splitting prism 1, one part passes through the beam splitting surface and reaches the plane B of the beam splitting prism, the plane B is coated with a reflective film to form a mirror, reflected by the plane B and then reflected by the beam splitting surface to reach the array Type photosensitive device 2; another part of the light is reflected by the beam splitting surface and reaches the plane A of the beam split...
Embodiment 2
[0021] like figure 2 As shown, the second embodiment of the present invention adopts the beam splitting prism as an approximately right-angle beam splitting prism, including two planes coated with a reflective film that form an angle between the first A and the second B, and the angle is approximately a right angle. The acute angle is greater than 90° and less than 91°, for example, 90.5°, and the beam splitting plane bisects the included angle.
[0022] see figure 2 , the measured parallel light is divided into two parts by the beam splitting prism 1, one part passes through the beam splitting surface and reaches the plane B of the beam splitting prism, and the other part of the light is reflected by the beam splitting surface and reaches the plane A of the beam splitting prism, and the planes A and B are coated with reflective The film constitutes a mirror, but the planes A and B are not perpendicular to the optical axis like a right-angle beam splitting prism, but have a...
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