4 results about "Hollow-cathode lamp" patented technology

The application provides a kind of laser radar exit laser frequency calibration device and method based on hollow cathode lamp, it is related to the technical field of laser radar, device includes: laser generation device, including first seed source and second seed source, the output frequency of one continuous light of first seed source is locked after frequency and the other continuous light is combined after frequency beating, compare output frequency with target frequency, generate the approximate value of lock frequency deviation;The continuous light output by second seed source is amplified after frequency calibration and output;Light source module is used to produce as incident light;Energy regulation module is used to adjust the light intensity of incident light;Absorption signal detection module includes hollow cathode lamp and reflector, for obtaining target saturated absorption spectrum, based on lamb dip method, the continuous light output by second seed source is calibrated according to target saturated absorption spectrum and the approximate value of lock frequency deviation.The frequency locking precision can be improved to 1MHz, which helps high-resolution detection of vertical velocity.

This application discloses a light source alignment device for a hollow cathode photoelectric spectrometer. The device includes a first-direction motion track, a second-direction motion track, a third-direction motion track, a hollow cathode lamp, a lamp holder, a driver, and a controller. The first-direction motion track, the second-direction motion track, and the third-direction motion track are arranged in a three-dimensional spatial coordinate system. The hollow cathode lamp is fixed to the lamp holder. The output terminal of the controller is connected to the control signal input terminal of the driver. The actuating terminal of the driver is connected to the lamp holder via a transmission device to drive the hollow cathode lamp fixed to the lamp holder to move along the first-direction motion track, the second-direction motion track, and the third-direction motion track. In this embodiment, the offset of the light source is corrected in three dimensions, which can improve the accuracy of light source correction and thus improve the reliability of the hollow cathode photoelectric spectrometer.

The utility model discloses a hollow cathode lamp light adjusting device belongs to hollow cathode lamp field, including inner sleeve, the outer wall of inner sleeve is provided with screw thread, the inside right -hand member of inner sleeve is fixed with convex lens, and the front end of inner sleeve is connected with outer sleeve through screw thread structure, and the inner wall of outer sleeve is provided with screw thread, and the right -hand member of outer sleeve is fixed with concave lens, and the left -hand member of inner sleeve is connected with lock nut through screw thread, and lock nut inlay has O type rubber ring. The utility model hollow cathode lamp light adjusting device is fixed to the ordinary hollow cathode lamp lamp shell, and realizes focusing through the screwing of outer sleeve, can make the output light convergence into approximate parallel light column, realizes different combination through the replacement of the convex lens and concave lens of different focal length, realizes the light adjusting requirement of the output different thickness light column, owing to the light of output approximate column, has improved the light utilization.

The application provides a spectrum detection system for detecting the safety and quality of fruit and vegetable nutrition, and relates to the technical field of spectrum detection, which comprises an automatic sample feeder, the top of the automatic sample feeder is provided with a multi-hole sample disc which is driven to rotate by a motor, a gas-liquid separation device is fixedly arranged on one side of the automatic sample feeder, a suction arm is slidably arranged above the automatic sample feeder, a cross arm is arranged above the suction arm, a sample feeding needle is fixedly arranged below the moving end of the cross arm, an optical detection bin is fixedly arranged on one side of the gas path system bin, a unified wide spectrum ultraviolet light source is adopted to cooperate with a scattering light channel, a single light source is used to simultaneously provide uniform and stable excitation light for multiple detection channels, a plurality of hollow cathode lamps do not need to be configured, the hardware cost of the equipment is greatly reduced, the cumbersome steps of light path calibration of multiple light sources are omitted, and the daily maintenance difficulty is significantly reduced, and the problem that each light source of a conventional equipment needs to be individually calibrated for light path and is difficult to maintain is solved.