Beam splitting device of double beam spectrophotometer and rotary table exclusively used in beam splitting device of double beam spectrophotometer
A spectrophotometer and double-beam technology, applied in the direction of spectrometry/spectrophotometry/monochromator, measuring device, optical radiation measurement, etc., can solve the problems of increasing equipment volume, reducing production cost, and high production cost , to achieve the effect of improving detection accuracy, reducing processing technology and improving processing accuracy
Pending Publication Date: 2018-03-13
武汉量谱精密仪器有限公司
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Problems solved by technology
[0019] The Chinese patent authorization announcement number is CN104007074. The technical disadvantages are as follows: 1. In order to realize the first predetermined sequence of optical signals, the second predetermined sequence of optical signals, the third predetermined sequence and the predetermined rotation period, enough through holes need to be opened on the disc body, At the same time, the mutual position of the through holes requires high precision, high production cost, and is not convenient for popularization and use; 2. Since the sample needs to be irradiated by reference light and sample light before reaching the quadrature signal generation part for processing, the quadrature signal generation part It is necessary to cooperate with a device with spectroscopic function, such as a dual-beam system with a chopper mirror to alternately split the light emitted by the processed light source into reference light and sample light, which increases the volume of the entire device, is not easy to carry, and is also difficult to carry. Inconvenient to reduce production costs
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[0056] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0057] Such as Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 Shown: the beam splitting device of a double-beam spectrophotometer, including a rotating shaft 101 , a motor 102 , a reflector 103 , a rotor 104 , a turntable 105 and a photoelectric switch 106 .
[0058] The turntable 105 rotates with the center of the rotating shaft 101 as the center of a circle. The turntable 105 is provided with three structures. The first structure is a light-transmitting part 107 for the light beam to pass directly through, the second structure is a reflection part 108 for reflecting the light beam, and the third structure In order to block the light beam and absorb the dark part 109 of the light beam, the transparent part 107 , the reflective part 108 and the dark part 109 are circumferentially distributed on the turntable 101 in...
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The present invention discloses a beam splitting device of a double beam spectrophotometer. The device comprises: a rotation shaft; a motor; a light reflection portion; a rotary table, wherein light transmission portions, reflection portions and dark portions are distributed in the circumference on the rotary table according to a set sequence; rotation pieces rotated by taking an axis of rotationas a centre of a circle, wherein the rotation pieces are provided with a plurality of rotation cycle measuring through holes or a plurality of rotation cycle measuring notches; and an optoelectronic switch, wherein a sensitization receiving portion and a light source emission portion are respectively and oppositely installed at groove walls of two sides of a groove and are configured to feed backthe rotation cycles of the rotation cycle measuring through holes or the rotation cycle measuring notches. The rotary table, the rotation pieces and the rotation shaft are fixedly connected, and the motor drives the rotation pieces and the rotary table to rotate through the rotation shaft. The present invention provides a beam splitting device of a double beam spectrophotometer and a rotary tableexclusively used in a beam splitting device of a double beam spectrophotometer which are simple in structure and convenient to use, the beam splitting device of the double beam spectrophotometer and the rotary table exclusively used in the beam splitting device of the double beam spectrophotometer have a dual-beam function with a chopping reflector and can allow an incident light beam to perform permeation, reflection and blocking in order according to a predetermined sequence to form reference light beam signals, sample light beam signals and dark current signals which have predetermined sequences.
Description
technical field [0001] The invention relates to the field of spectrophotometers, in particular to a beam splitting device and a turntable of a double-beam spectrophotometer. Background technique [0002] A spectrophotometer is a device used to measure absorption spectra. Among spectrophotometers, there are visible ultraviolet spectrophotometers for measuring spectra from the near-infrared region to the visible region and ultraviolet region, infrared spectrophotometers for measuring spectra in the infrared region, and the like. [0003] Searching found that the application publication number is CN105973829A, and the name is a double-beam infrared spectrophotometer with double infrared light detectors. Such as figure 1 As shown, the infrared light emitted from the light source unit is filtered first, and then the processed infrared light is alternately divided into reference light and sample light by a double-beam system with chopper mirrors; and then passed through two rece...
Claims
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IPC IPC(8): G01J3/02G01J3/427G01N21/31
CPCG01J3/02G01J3/427G01N21/31
Inventor 阮姚锋
Owner 武汉量谱精密仪器有限公司