Abstract: A head-mounted display device, comprising a holder, a lens barrel assembly provided on the holder, and an adjusting device. The lens barrel assembly comprises a lens barrel, a display module provided in the lens barrel, and an optical lens group provided at one end of the lens barrel, wherein the optical lens group comprises at least one optical lens. The adjusting device comprises a driving device provided on the holder, a support provided in the lens barrel and fixedly connected to the display module, and a transmission device. The transmission device is configured to be capable of driving the support to do a reciprocating linear motion under a driving of the driving device, so that the display module is close to or away from the optical lens group.

Abstract: Provided is a focusing assembly including a focusing barrel and a barrel retaining ring; the focusing barrel includes a first sleeve, a second sleeve, and a third sleeve that are sequentially sleeved from inside to outside of the focusing barrel; the first sleeve is provided with a lens mounting portion for mounting a focusing lens, a first end of the second sleeve is provided with a display screen mounting portion for mounting a display screen, a second end of the second sleeve is detachably connected to the barrel retaining ring, the first end and the second end being opposite ends of the second sleeve; and the lens mounting portion and the display screen mounting portion are configured such that the relative position thereof in a focusing direction of the focusing assembly is adjustable.

Abstract: A wavelength selective switch, including: an optical fiber array, an optical signal processing device and an output selection device. The optical fiber array includes multiple dual-core optical fibers arranged in parallel, one dual-core optical fiber being used for inputting two optical signals; the optical signal processing device is located at an output end of the optical fiber array and is used for splitting the two optical signals into sub-signals of different wavelengths and projecting the sub-signals of different wavelengths to different spectral band regions in the output selection device; and the output selection device is located at the rear end of the optical signal processing device, and is used for processing the sub-signals projected to the spectral band regions, so as to respectively perform output selection on the sub-signals split from two optical signals, thereby achieving a dual-switch function.

Abstract: The present disclosure relates to an adhesive comprising at least one of the following copolymer A: the copolymer A has at least one repeating unit carrying an amide group and a carboxyl and/or its ammonium salt and at least one other repeating unit different from the one carrying an amide group and a carboxyl and/or its ammonium salt. The present disclosure also relates to an artificial board formed of a lignocellulose material and the adhesive and a method for manufacturing the artificial board.

Abstract: The present disclosure relates to an adhesive comprising at least one of the following copolymer A: the copolymer A has at least one repeating unit carrying an amide group and a carboxyl and/or its ammonium salt and at least one other repeating unit different from the one carrying an amide group and a carboxyl and/or its ammonium salt. The present disclosure also relates to an artificial board formed of a lignocellulose material and the adhesive and a method for manufacturing the artificial board.

Abstract: A wavelength selective switch, including: an optical fiber array, an optical signal processing device and an output selection device. The optical fiber array includes multiple dual-core optical fibers arranged in parallel, one dual-core optical fiber being used for inputting two optical signals; the optical signal processing device is located at an output end of the optical fiber array and is used for splitting the two optical signals into sub-signals of different wavelengths and projecting the sub-signals of different wavelengths to different spectral band regions in the output selection device; and the output selection device is located at the rear end of the optical signal processing device, and is used for processing the sub-signals projected to the spectral band regions, so as to respectively perform output selection on the sub-signals split from two optical signals, thereby achieving a dual-switch function.

Abstract: A wavelength selective switch includes an attenuation liquid crystal cell array and a switching liquid crystal cell array, the attenuation liquid crystal cell array is configured to select a region where a light is incident on the switching liquid crystal cell array; the switching liquid crystal cell array includes a first ECB liquid crystal cell array, which is divided into a plurality of pixel units, a phase of each pixel unit is adjusted by setting different voltages so that a phase pattern formed by the pixel units exhibits a lens property, and the light passing through the switching liquid crystal cell array is deflected by changing a center of the lens formed by the phase pattern, so as to select an outgoing port.

Abstract: The invention provides a cushioning mechanism comprising a base, an equal-width cam mechanism, a limiting bracket, a ball screw, two groups of energy dissipaters and energy dissipater fixing bases, wherein the equal-width cam mechanism, the limiting bracket, the ball screw, the two groups of energy dissipaters and the energy dissipater fixing bases are mounted on the base. The equal-width cam mechanism comprises a quadrilateral frame and a cam mounted in the quadrilateral frame. The cam is connected with a nut of the ball screw. The two groups of energy dissipaters are mounted on the energy dissipater fixing bases on the two sides of the equal-width cam mechanism separately. The ends, away from the energy dissipater fixing bases, of the two groups of energy dissipaters are connected with the two sides of the quadrilateral frame separately. The invention is low in manufacturing cost and good in buffering and limiting effect.

Abstract: The present disclosure relates to wavelength selective switches. In one embodiment, a wavelength selective switch may include a liquid crystal (LC)-based attenuation switching device that has an LC switching module to switch an incident beam to one of a plurality of output paths. The LC switching module may include one or more LC switching cells. The LC-based attenuation switching device further includes a mirror to reflect the beam from the LC switching module so as to output the beam through a corresponding output port, and a temperature compensation module provided on a side of the mirror opposite to the LC switching module. The temperature compensation module may be configured to alter curvature of the mirror as temperature changes so as to compensate for deformation of the LC switching cells due to the temperature change.

Abstract: A wavelength selective switch includes an attenuation liquid crystal cell array and a switching liquid crystal cell array, the attenuation liquid crystal cell array is configured to select a region where a light is incident on the switching liquid crystal cell array; the switching liquid crystal cell array includes a first ECB liquid crystal cell array, which is divided into a plurality of pixel units, a phase of each pixel unit is adjusted by setting different voltages so that a phase pattern formed by the pixel units exhibits a lens property, and the light passing through the switching liquid crystal cell array is deflected by changing a center of the lens formed by the phase pattern, so as to select an outgoing port.

Abstract: The present disclosure relates to wavelength selective switches. In one embodiment, a wavelength selective switch may include a liquid crystal (LC)-based attenuation switching device that has an LC switching module to switch an incident beam to one of a plurality of output paths. The LC switching module may include one or more LC switching cells. The LC-based attenuation switching device further includes a mirror to reflect the beam from the LC switching module so as to output the beam through a corresponding output port, and a temperature compensation module provided on a side of the mirror opposite to the LC switching module. The temperature compensation module may be configured to alter curvature of the mirror as temperature changes so as to compensate for deformation of the LC switching cells due to the temperature change.

Abstract: A method for compensating for a wavelength shift in a wavelength selective switch (WSS), and a device therefor. The device comprises a fixed seat (301) as well as a rotation beam (304) and a compensation block (302) that have different thermal expansion amounts, the rotation beam (304) and the compensation block (302) being fixedly adhered to the fixed seat (301). In the method, a combined structure of the rotation beam (304) and the compensation block (302) with different thermal expansion amounts is adopted; the combined structure rotates by means of different expansion amounts generated by the rotation beam (304) and the compensation block (302) at the same external temperature, and further drives an optical element of the WSS to rotate, hence compensating for a wavelength shift of the WSS. The method is safe and reliable; the device has a simple structure, and is convenient to encapsulate, is applicable to various WSS optical paths, and does not affect advantages of the optical path structure of the WSS.

Abstract: A method for compensating for a wavelength shift in a wavelength selective switch (WSS), and a device therefor. The device comprises a fixed seat (301) as well as a rotation beam (304) and a compensation block (302) that have different thermal expansion amounts, the rotation beam (304) and the compensation block (302) being fixedly adhered to the fixed seat (301). In the method, a combined structure of the rotation beam (304) and the compensation block (302) with different thermal expansion amounts is adopted; the combined structure rotates by means of different expansion amounts generated by the rotation beam (304) and the compensation block (302) at the same external temperature, and further drives an optical element of the WSS to rotate, hence compensating for a wavelength shift of the WSS. The method is safe and reliable; the device has a simple structure, and is convenient to encapsulate, is applicable to various WSS optical paths, and does not affect advantages of the optical path structure of the WSS.

Abstract: A process for forming a capacitor. The process includes providing an anode; providing a dielectric on the anode; exposing the anode to a polymer precursor solution comprising monomer, conjugated oligomer and optionally solvent and polymerizing the polymer precursor. The ratio between monomer and conjugated oligomer ranges from 99.9/0.1 to 75/25 by weight. The solvent content in the polymer precursor solution is from 0 to 99% by weight.

Abstract: A process for forming a capacitor. The process includes providing an anode; providing a dielectric on the anode; exposing the anode to a polymer precursor solution comprising monomer, conjugated oligomer and optionally solvent and polymerizing the polymer precursor. The ratio between monomer and conjugated oligomer ranges from 99.9/0.1 to 75/25 by weight. The solvent content in the polymer precursor solution is from 0 to 99% by weight.