32results about How to "Light intensity adjustment" patented technology

The usual xenon radiation source in conventional weathering testers is replaced by UV light-emitting diodes (LEDs) ( 6 ). These can be used to provide a good approximation of the UV component of the solar spectrum, in particular when different types of UV light-emitting diodes ( 6 ) with different emission characteristics are employed. Optionally, further light-emitting diodes in the visible spectral range may also be used in order to cover other parts of the solar spectrum. The light-emitting diodes ( 6 ) may be mounted on a flexible printed circuit board ( 5 ), which may in turn be fitted on a tubular holding body ( 4 ). The flexible printed circuit board carrying the light-emitting diodes may also be placed on other substrates ( 7 ) which are pliable in a geometrically stable way, so that that they can be arranged at a uniform distance from material samples with a particular surface topology, in order to obtain uniform exposure.

The invention discloses an aeration device for water body for urban river course improvement, which comprises a floating body, the floating body is a circular cake-shaped structure, and an annular support plate is fixed by bolts at the edge of the outer wall of the floating body, and the peripheral surface of the annular support plate is opened. There is an annular groove, and the inner wall of the annular groove is annularly provided with a support ring, and the outer side of the support ring is rotatably connected with equidistant annular nozzle assemblies, the top of the annular support plate is provided with a solar power generation assembly, and the bottom of the floating body A conical cover is fixed by bolts, and a liquid suction pipe is inserted at the bottom end of the inner wall of the conical cover. The invention conveniently converts solar energy into electric energy, and is more environmentally friendly. Combined with the light intensity sensor and the electric telescopic rod, it is convenient to adjust the inclination direction of the annular solar power generation panel, adjust the light intensity on its surface, and achieve better power generation effect.

The invention relates to the technical field of microorganism detection, and specifically discloses an easily adjustable lighting device for microorganism detection, which includes a lighting box. The centers of the inner walls of the chute close to each other are fixedly connected with snapping springs, and the ends of the four snapping springs away from each other are fixedly connected with snapping plates, and the four snapping plates are all slidably connected with the snapping chute. The interior of the wall of the lighting box is rotatably connected with an annular plate, and the front and rear ends and the left and right ends of the inner wall of the annular plate are fixedly connected with a No. 1 lighting lamp. Petri dishes of different sizes can be engaged to limit the position of the petri dishes, reducing the possibility that the petri dishes will collide with the inner wall of the lighting box when the lighting box is tilted or hit, which will affect the normal progress of the experiment.

A saturated absorption Doppler broadening spectral line device comprises a Lambda / 2 wave plate, a first polarization beam splitter, a first total reflection mirror, a second total reflection mirror, a third total reflection mirror, a second polarization beam splitter, a Lambda / 4 wave plate, a sample reservoir and a detector. According to the saturated absorption Doppler broadening spectral line device provided by the invention, the light beams of pump light and detection light completely coincide to obtain a higher signal to noise ratio; the spatial scale of the whole system is only limited by the size of an optical device and the sample reservoir, an optical path is more compactly and flexibly arranged, so that people can observe a precise level-structure spectral line of an atom or molecule.

The invention relates to a laser range finding optical system and a dominant wave signal sampling method thereof. The system comprises reception object lenses, a field lens, a transformation object lens and a photoelectric detector which are arranged in order, the reception object lenses, the filed lens and the transformation object lens are arranged in the same optical axis, the field lens is placed at the focus of the reception object lenses, a first reflector is arranged between the reception object lenses and the field lens, the center of the first reflector is placed in the optical axes of the reception object lenses, the included angle between the first reflector and the optical axis of each reception object lens is 45 degree, a second reflector is arranged at one side of the first reflector, the center of the first reflector and the center of the second reflector are placed in the same straight line, and the straight line is vertical to the optical axes of the reception object lenses. The system is simple in structure, low in cost and high in measuring precision, effectively prevents the photoelectric detector from damage of too storing dominant wave signals, and is characterized by wide application range.

The invention relates to a spectral calibration device and method for a multi-dimensional information integration obtaining camera. The device comprises the multi-dimensional information integration obtaining camera, a spectrum analyzer, an integrating sphere and a calibration light source assembly. The calibration light source assembly is fixedly installed at a light-in opening of the integrating sphere, a probe of the multi-dimensional information integration obtaining camera and a probe of the spectrum analyzer are both fixed at a light-out opening of the integrating sphere, and the probe of the spectrum analyzer is located above or below the probe of the multi-dimensional information integration obtaining camera; the diameter of the light-out opening of the integrating sphere is larger than the entrance pupil diameter of the multi-dimensional information integration obtaining camera; the calibration light source assembly comprises a monochromator, lasers with different wavelengths and a fixed target wheel; the fixed target wheel is provided with a center hole, and light beams sent out by a monochromator light source enter the integrating sphere through the center hole; multiple hole sets are distributed on the fixed target wheel and used for fixing optical fiber ports of laser light sources, and models of the laser light sources installed on all the hole sets are the same. The spectral calibration device and method for the multi-dimensional information integration obtaining camera are wide in application range and high in calibration accuracy.