5results about How to "Implement reflection" patented technology

This application discloses an optical parametric oscillator and a laser generating device, relating to the field of laser technology. The optical parametric oscillator includes a first optical fiber, a mirror assembly, a nonlinear crystal, and a second optical fiber. The first optical fiber has a first receiving end and a first output end. The first receiving end is used to receive pump light. The second optical fiber has a second receiving end and a second output end. Light output from the first output end can be transmitted to the second receiving end via the mirror assembly and the nonlinear crystal. The second output end is used to output signal light. The mirror assembly includes multiple mirrors. The nonlinear crystal is located in the optical path between two mirrors. A first grating is disposed on the first optical fiber, and a second grating is disposed on the second optical fiber. Both the first and second gratings are fiber Bragg gratings. Because this application uses a first optical fiber and a second optical fiber to define the light transmission path, compared to a free-space optical path, the optical fiber can be coiled, which is beneficial for reducing the overall size and improving integration.

This invention provides a three-dimensional heat-reflective thermal insulation material and its preparation method, belonging to the field of functional textile technology. The preparation method includes the following steps: bonding a heat-reflective metal foil layer to one surface of a flexible textile substrate, the heat-reflective metal foil layer comprising a heat-reflective functional layer of metal and / or metal oxide; then embossing the heat-reflective metal foil layer with a three-dimensional embossing roller to obtain the three-dimensional heat-reflective thermal insulation material; the surface of the three-dimensional heat-reflective thermal insulation material has a three-dimensional pattern with a uniform closed pattern array. The heat-reflective metal foil layer on the surface of the flexible textile substrate of this invention can effectively reflect its own infrared radiation, ensuring a smaller thickness while improving the thermal insulation effect; moreover, its specific three-dimensional pattern structure further improves the thermal insulation performance. The thermal insulation material of this invention can be very thin, thus maintaining the comfort of clothing and other application products.

The application relates to the technical field of photoelectric communication, in particular to a high-low rate mutually compatible PWDM optical device which comprises a first controller, one end of the first controller is provided with a second controller, a transmission mechanism is connected between the first controller and the second controller, a processing mechanism is installed at one end of the first controller, and a mounting mechanism is installed on the first controller; through the installation of the transmission mechanism and the first controller and the second controller, data can be processed, optical signal receiving and sending can be realized, high-speed data transmission can be realized while the compatibility of low-speed data transmission is reserved, thereby meeting the experience of mutual use of two rates of users, through the installation of the processing mechanism, different optical signals can be further processed, the stability of data transmission can be realized, through the connection of the mounting mechanism, the equipment can be conveniently installed, operation is more convenient, and the equipment can work more stably.

The invention discloses a preparation method of a functional fabric and a knapsack assembled by the functional fabric, and belongs to the technical field of fabric preparation. A flexible continuous interface is constructed through PA latex, Cu2O antibacterial particles form a semi-embedded fixed structure, composite optical microspheres can be stably attached and orderly assembled, and the attachment firmness and surface functional activity of a functional layer are considered; through evaporation-induced self-assembly of the monodisperse composite optical microspheres, a periodic microstructure is formed on the surface of the fabric, so that a stable structural color is generated; a DA3261-dopamine conjugate and TPU are compounded and subjected to ultraviolet polymerization to form a temperature-sensitive layer, so that the outer surface of the knapsack has visual thermal response capability, the temperature-sensitive layer starts to have obvious color change at 35 DEG C and turns from bluish violet to amaranth at 40 DEG C, the comprehensive chromatic aberration delta E reaches 28.7, the delta E exceeds 30 at 45 DEG C or above, and the knapsack shows remarkable temperature early warning capability.

The utility model discloses aluminum foil detection equipment with a deviation rectifying mechanism, which relates to the technical field of aluminum foil detection and comprises an equipment base and an aluminum foil tape, a positioning sleeve is fixedly mounted on the equipment base, and the deviation rectifying mechanism is mounted on the positioning sleeve. The deviation rectifying mechanism comprises a telescopic column slidably mounted in the positioning sleeve and an adjusting lead screw rotatably mounted in the positioning sleeve, the adjusting lead screw is mounted on a lead screw nut in a threaded mode, a rotating base is rotatably mounted at the upper end of the telescopic column, and a detection mechanism is fixedly mounted on the rotating base. The deviation rectifying mechanism further comprises a servo motor fixedly installed on the equipment base, a small gear is fixedly installed at the output tail end of the servo motor, and a large gear is fixedly installed at the lower end of the adjusting lead screw. According to the aluminum foil detection equipment with the deviation rectifying mechanism, the deviation rectifying mechanism can adjust the detection box body, the quality of a shot picture is guaranteed, and the detection mechanism can detect the two faces of an aluminum foil only through one set of CCD cameras.