76results about How to "Stable light source" patented technology

The invention discloses a calibration method of absolute response ratio of an infrared detector and a device thereof. By using the method of combining a blackbody origin and a narrow band pass filter, the absolute response ratio parameter of the detector under an appointed wavelength is acquired. According to the method, the blackbody origin is adopted as a calibration light source, so the stability of the uniformity of spatial output light spots is guaranteed; the placement positions of the detectors does not need to be precisely adjusted during calibration measurement, so the calibration efficiency and the precision of batch detectors are greatly improved; and meanwhile, power parameter of light irradiated onto the surfaces of the detectors is acquired through a theoretical calculation method, so errors in the power measurement of weak light signals are overcome. Through changing the wavelength parameter of the pass filter and the blackbody temperature, the method can be applied to parameter calibration of the detectors at various wavelengths, and the applicability is high.

The lighting device positioned on front end of car includes a self-body; at least two lamp sockets placed on the self-body, every lamp socket includes a parabolic reflector, and a lens is set on the opening end of said parabolic reflector; at least two light-emitting diode components respectively set on the parabolic reflectors of these lamp sockets; and a starting component respectively electrically-connected with above-mentioned light-emitting diode components and respectively for controlling these light-emitting diode components.

A GaAs based semiconductor laser having a combination of cladding layers including a ridge structure part, and a remaining part which overlays the active layers of the laser, and an etch stop layer sandwiched between the ridge structure part and the remaining part. The remaining part preferably overlies the entire surface of laser active layers and has a thickness “D” which satisfies 1.1×W>D≧0.5×W wherein W is the width of a spot size having a strength of 1/e² as measured at the laser front facet in a direction perpendicular to the active layers, wherein “e” is the base of the natural logarithm. The semiconductor laser solves the kink phenomenon to obtain an excellent linear relationship between the optical output power and the injected current.

A LED backlight driving circuit is disclosed. The LED backlight driving circuit includes a driving module, a detecting module, and an adjusting module. The driving module receives a control voltage generated by a voltage control module, receives a feedback voltage generated by a feedback voltage module, and generates driving signals to a LED unit. The detecting module generates adjusting signals for the adjusting module according to a detected value of the driving signals. The adjusting module controls the feedback voltage according to the adjusting signals generated by the detecting module so as to adjust the driving signals. In this way, not only the current precision within the LED unit is enhanced, but also the light source is kept stable. Also, the life cycle of the LED units is also increased. In addition, a LED backlight driving circuit includes the above LED backlight driving circuit is also disclosed.

The invention relates to a method for preparing hydrogen, in particular to a method for preparing hydrogen by using photosynthetic bacteria. The method takes a light emitting diode (LED) as a light source to radiate the photosynthetic bacteria, so that the hydrogen is produced. An LED lamp is adopted to be taken as a photosynthetic bacteria hydrogen producing source, and an LED spectral band has the advantages of long service life, slow light decay, convenient installation and easy control, and can provide stable and even light source for the photosynthetic bacteria. Furthermore, as the LED is little in electric power consumption, the cost for producing hydrogen is saved. Compared with an electric incandescent lamp, the LED lamp with monochromatic source has remarkable promoting effect on increasing the hydrogen volume produced from the photosynthetic bacteria.

The invention discloses an artificial light source applicable to breeding of adult black soldier fly larvae. The artificial light source at least can generate at least one of blue light, green light and ultraviolet light, the wavelength of the used blue light ranges from 420nm to 470nm, the wavelength of the used green light ranges from 500nm to 535nm, and the wavelength of the used blue light ranges from 355nm to 380nm. The artificial light source can also generate white light with color temperature ranging from 3000K to 7000K. The artificial light source is used as a supplementary lighting source in an adult black soldier fly larvae breeding space, or a unique light source. The invention further provides an adult black soldier fly larvae breeding method, and in the adult black soldier fly larvae breeding space, the artificial light source is adopted to irradiate the artificial light source. Based on the vision characteristics of two compound eyes and three single eyes on the heads ofadult black soldier fly larvae and the sensitivity degree on the stimulation of the specific-wavelength light, the breeding rate of the adult black soldier fly larvae can be increased, the generationof useless light can be reduced, and the energy consumption of the artificial light source in the adult black soldier fly larvae breeding space.

The invention discloses an airplane residual ice monitoring device capable of eliminating environment interference. The airplane residual ice monitoring device comprises an integrating sphere sensor, a beam splitter prism and light filter control device, an infrared light source, a control unit, a light filter control device, a near infrared surface array CCD (charge coupled device) camera, an infrared image acquisition processing unit, a computer data processing control unit and a detection result pseudo-color display unit. The airplane residual ice monitoring device capable of eliminating environment interference, which is disclosed by the invention is capable of eliminating, t the environment interference is eliminated through the integrating sphere sensor, thus realizing precision detection of on residual ices. Compared with the prior art, the airplane residual ice monitoring device has the following remarkable advantages that in a process of detecting the residual ices on an airplane body of the air plane, the integrating sphere sensor can be used for monitoring environment light, stabilizing the light source and eliminating the interference of the external environment, and therefore, the aim of precision measurement can be fulfilled.

The invention relates to a light box sign, in particular to an awning eave surface yellow bar which is matched with the awning of a gas station. Aiming at the technical defects of high energy consumption, troublesome installation, long construction period and inconvenient maintenance of the conventional awing eave surface yellow bar lamp box, the invention provides the awning eave surface yellow bar which has the advantages of convenient installation and maintenance and good energy saving effect. The awning eave surface yellow bar comprises a light-transmitting outer cover and a back plate with a luminous source, and is characterized in that: the luminous source is an LED light source which is fixed on the back plate; the section of the light-transmitting outer cover is U-shaped; and the two bent transverse parts of the light-transmitting outer cover are clamped with the upper and lower bottom edges of the back plate. The LED light source is fixed on the back plate and matched with the clamped light-transmitting outer cover, so that the awning eave surface yellow bar has the advantages of good energy saving effect, short construction period and convenient replacement and maintenance.

The invention relates to a calibration device and a calibration method used for an indoor pyranometer. A supporting pillar and a positioning pillar are arranged on left and right surfaces of a rotating crossbeam respectively, and a rotating shaft is fixed in a bearing in a shaft core and is movably connected with a fixed shaft; a light shield is fixed at the bottom end of a light shield disc, theupper end surface of the light shield disc is fixed with a crossbeam of a photochopper, the crossbeam of the photochopper is placed in a U-shaped mouth on an upright shaft of the photochopper and is connected with the upright shaft of the photochopper through a pin shaft; and the upright shaft of the photochopper is fixed on a worktable board, a turn table is fixed on the worktable board, the crossbeam of the photochopper is rotated clockwise to enable the light shield of the photochopper to be placed above the turn table, a light source support is fixed on the rear end surface of the worktable, an irradiation light is movably connected on the light source support, and the distance between the irradiation light and the worktable board can be adjusted. The method is characterized in that the calibration can be performed indoor at any time, and is not limited or influenced by weather; the light source is stable, the calibration time is short, and the stability is high; and the use is convenient, the efficiency is higher, and the data reliability is high.

The invention discloses a fluorescence imaging analysis system and a fluorescence imaging analysis method. The fluorescence imaging analysis system comprises a shell, and at least one excitation device and an imaging device, which are arranged inside the shell; the excitation device comprises an excitation light source and an excitation filter; light rays emitted by the excitation light source pass through the excitation filter to form monochromatic excitation light and the monochromatic excitation light is irradiated to a sample stage, and a detected substance emits fluorescent light after being excited; and the imaging device is used for capturing fluorescent light passing through a piece of filter glass and analyzing and determining the concentration of the fluorescent substance. Compared with the prior art, the system can acquire the reliable detection result without arranging an expensive optical grating, an interference color filter and a photomultiplier and determining an electronic circuit, the structure is skillful and simple, the preparation cost is low and the system and the method can be widely applied.

The invention discloses a multifunctional rapid soil nutrient detection device based on a halogen lamp combined light source. The multifunctional rapid soil nutrient detection device is composed of three parts, namely a detection module, a microprocessor and a GPS (Global Position System) module, and relates to a power supply module, a voltage stabilization module, a sample module, a detection module, a display module, the GPS module, an internet access module, a processor module, a light source combination manner and a structural design. According to the soil nutrient detection device, the microprocessor adopts an embedded single-board computer which has a fast speed, a large internal storage, abundant interfaces and simple power supply. The detection module is powered from the microprocessor by adopting a USB (Universal Serial Bus) data line. The device is compact in structure, convenient to move and carry and good in stability; meanwhile, indexes of a plurality of soil nutrients (including nitrogen, phosphorus, potassium and organic matters) can be analyzed simultaneously, and the device also has a GPS function so as to conveniently read out global longitude and latitude coordinates to realize real-time positioning.

The invention relates to the technical field of medical instruments, and discloses an oral lighting lamp for the stomatological department. The oral lighting lamp comprises a lamp head, a bending partand a lamp body, the lamp head is movably connected with the lamp body through the bending part, the lamp head is in a thin and long shape and is provided with LED lamp beads, and the lamp body is provided with a brightness switch and a charging display lamp; the oral lighting lamp for the stomatological department is simple in structure and can adjust the angles of the lamp head and the lamp body through the bending part to meet the requirements of different nursing parts of the oral cavity, and therefore different irradiation angles are achieved; by adopting the LED lamp beads, the light source is stable, and the brightness is balanced; by arranging a silicone sleeve sterilized at high temperature on the lamp head, a patient can be assisted in opening the mouth comfortably, and the discomfort of the patient when he/she opens the mouth for a long time is reduced; meanwhile, the lamp can be turned on or turned off by pressing the brightness switch for a long time, the structure is simplified, and the design of the lamp is more reasonable.

The invention discloses an aerial framework operation toolbox and belongs to the technical field of transformer substation aerial maintenance equipment. The aerial framework operation toolbox is formed by a box body and a box cover; the box body is hinged to the box cover; the bottom of the box body is provided with a channel steel connection device; a table surface which is used for containing tools is formed in the box body; an empty chamber is formed below the table surface; a storage battery is arranged in the empty chamber; a lighting lamp is arranged in the box body; the storage battery serves as a power supply of the lighting lamp; the outer surface of the box body is provided with a lighting lamp switch and a battery charging interface. The aerial framework operation toolbox is used for containing the tools, toolkits which are widely used currently can be replaced, the use is safe and convenient, and the problem that the lighting is inconvenient during night operation is solved and the difficulty of the night operation is reduced due to the lighting device.

The invention discloses a metal plate surface detector, comprising a PC terminal which is also in connection with an image acquisition card; the image acquisition card is also in connection with a workpiece detection positioner, a CCD camera and a laser. A main conveyor belt is also arranged under the workpiece detection positioned, the CCD camera and the laser. The inlet of the main conveyor belt is also provided with a laser sensor; the side surface of the main conveyor belt is also provided with an auxiliary conveyor belt; the main conveyor belt and the auxiliary conveyor belt are in movable connection through a connecting piece. The bottom of the laser is provided with a pin hole filter, the bottom of which is successively provided with a beam expanding lens and a collimating lens. The metal plate surface detector can be adjusted according to the width of a metal plate, allowing the metal plate to move on an optimal path and to perform visual detection; in addition, the detection process can not damage the metal plate, prevent external stray light from influencing detection results, and guarantee final detection result accuracy.

The invention discloses a measuring machine for wire bending. The machine comprises a housing and a rack fixedly mounted on a side surface of the housing. The rack comprises a connecting base and a supporting frame fixedly mounted at two ends of the top surface of the connecting base. A fixing support is slidably connected with a side surface of the supporting frame, and a rotating support is fixedly mounted on the top surface of the supporting frame. According to the measuring machine for wire bending, the twelve stations can work simultaneously by the arrangement of twelve stations, and stopcounting when the automatic counting test material is bent to a broken line and not able to be powered on; A first connecting bolt can be screwed at the same time by the arrangement of the rotating device, so that wires of all test groups are quickly fixed on the rotating support; the distance between two sub-rods of the fixing support can be adjusted by the arrangement of the fixing support, sothat the method is suitable for the bending testing of the wires with different thicknesses.

present invention provides a night lamp which the holder is rotatable along the plug, comprises a shell and a plug, said shell is assembled by a front holder and rear holder, a joint for installing the bulb is positioned on the top of said shell, and the laminated electrodes for electrical connection between the bulb and the holder is solid mounted inside said joint; a rotatable plug unit is installed on the back of said rear holder, and said plug unit also comprises an annular jammer, which is fixed on said shell by screws, the plug unit is connected to said shell by said annular jammer which also makes the plug unit become rotatable, thus, user can rotate said shell and the bulb which is installed on it to meet desirable angle.

The invention discloses a light intensity-adjustable lamp which comprises a lamp, a lamp housing and a base, wherein the lamp is fixed in the lamp housing, and is an LED bulb; the lamp housing is made of polyvinyl chloride; the base is connected with the lamp and the bottom end of the lamp housing; the base is made of stainless steels; the base comprises a switch, a knob and a fixed buckle; the switch is used for controlling the on/off operation of the lamp; the knob is used for controlling the light intensity of the lamp. Through the mode, the light intensity-adjustable lamp has such advantages as novel structure, beautiful shape, stable light source, energy conservation, environmental protection, adjustable light intensity, comfort, intelligence, convenience for use and simple operation, and has wide market prospect in the popularization of the light intensity-adjustable lamp.

The invention discloses a method and a device for generating a random number based on diamond, and the method comprises the following steps: (1) focusing laser on a diamond sample containing photoluminescence defects, and collecting a fluorescence signal generated by the diamond sample; and (2) processing a photon arrival time signal in the fluorescence signal to obtain a random number. The devicecomprises a laser, a diamond sample, a signal acquisition module and a signal processing module, wherein the diamond sample is a diamond sample containing photoluminescence defects, and laser emittedby the laser is focused on the diamond sample to excite the diamond sample to generate a fluorescence signal; the signal acquisition module is used for collecting fluorescence signals; and the signalprocessing module is used for processing the photon arrival time signal in the fluorescence signal to obtain the random number.

The invention discloses a test fixture of an image sensor chip and with a test light source. The test fixture comprises the test light source and the test fixture. The test light source is fixed at the upper end of the test fixture. According to the test fixture of the image sensor chip and with the test light source, the test light source is arranged on the test fixture directly, the push and pull action of the traditional LED (Light Emitting Diode) surface light source is not required, and accordingly the operation time is saved and the working efficiency of workers is improved; a single LED lamp bead serves as a light emitting source and is combined with a light uniform plate and accordingly the light source is stable, the service life is long, the light is uniform, and the like, and accordingly the loss of the test yield of the image sensor chip due to light source problems is greatly reduced; compared with the traditional LED surface light source, the brightness of the light source can be accurately adjusted due to a potentiometer and accordingly the brightness of the light source can be easy to change, the use personnel can perform adjustment conveniently, and the requirements for different light source brightness values of different products can be met.