Abstract: A method for standardizing an object model of an Internet of Things (IoT) terminal includes requesting an IoT terminal connected to the IoT management platform to upload respective object model data and if the IoT terminal supports uploading its own object model data, updating, according to the object model data uploaded by the IoT terminal, a first object model that matches the object model data. If the IoT terminal does not support uploading its own object model data, the method includes acquiring an object model log of the IoT terminal, and formatting log data in the object model log to obtain target log data. The method further includes sending the target log data to a big data platform to enable the big data platform to generate a second object model according to the target log data, and if the second object model is received, storing the second object model.

Abstract: The present disclosure relates to the technical field of optical lens and discloses an optical system including, from an anterior side to a posterior side: an image surface, having a circular polarizer attached to a posterior side of the image surface to emit light; a first lens, provided with some reflective elements on an anterior-side surface and a lamination film on a posterior-side surface of the first lens, the lamination film comprising a reflective polarizing film and a quarter waveplate, and the reflective polarizing film provided at a posterior side of the quarter waveplate; and an aperture, located at the posterior side of the optical system; and the optical system further satisfying following conditions: VD?6 mm; SDmax?21.2 mm; and 0.71?d4/TTL?0.85. The optical system has good optical functions while satisfying a desire of design in a small size and a light weight.

Abstract: The present disclosure discloses an optical module and a VR device. The optical module includes, from an image side to an object side, a first lens, a second lens and a third lens; a lamination film is attached on an image-side surface of the first lens, the lamination film comprising, from the image side to the object side, a reflective polarizing film and a quarter waveplate film; and the optical module further satisfying following conditions: 1.00?f23/f?1.50; MAX SD?27.00 mm; and Eyebox?12.00*12.00 mm. The present disclosure not only solves the existing problem of small Eyebox, small FOV, the inability to achieve adjustable diopter, or the ability to achieve adjustable diopter but an adjustment structure being complex and a range of diopter adjustment being small, but also satisfies a use requirement for miniaturization and light weight of an optical module in a VR device.

Abstract: The present disclosure relates to the technical field of near-to-eye display and discloses an optical system including, from an anterior side to a posterior side: an image surface, a circular polarizer; a third lens, a beam splitter, a second lens, a quarter waveplate, a first lens, a reflective polarizing film and an aperture, wherein the circular polarizer is attached to a posterior side of the image surface, the beam splitter is attached to an anterior-side surface of the second lens, the first lens and the second lens are glued together, the quarter waveplate is provided between the first lens and the second lens, the reflective polarizing film is attached to a posterior-side surface of the first lens, satisfying following conditions: VD?16.00 mm, SDmax?30.00 mm, L?15.00 mm and f12/f?1.00. The optical system has good optical functions while satisfying a desire of design in a small size and a light weight.

Abstract: An aqueous dispersion of a hydrophobically-modified alkali-soluble multistage polymer useful as a thickener affording high thickening efficiency and an aqueous coating composition comprising such aqueous dispersion showing good stability after heat aging without compromising stability upon addition of colorants.

Abstract: A water-based coating composition containing two parts A and B: (A) a binder component containing a waterborne epoxy dispersion, dispersed inorganic particles, and a polymeric dispersant; and (B) a hardener component, and a ratio of the component (A) and the component (B) is 90:1 to 2:1. The polymeric dispersant contains anti-agglomerating functional groups that are unreactive with oxirane groups of the epoxy dispersion.

Abstract: An aqueous polymer dispersion is composed of (i) an emulsion polymer having a weight average molecular weight of from 2,000 to 30,000 daltons, wherein the emulsion polymer comprises as polymerized units, based on the dry weight of the emulsion polymer, (a) from 10% to 90% by weight of an ethylenically unsaturated ionic monomer, (b) from 5% to 90% by weight of a photosensitive monomer, and (c) from 0 to 85% by weight of an ethylenically unsaturated nonionic monomer; and (ii) from 3.5% to 50% by weight of TEMPO and/or a derivative thereof, based on the total dry weight of the aqueous polymer dispersion. An aqueous coating composition comprising the aqueous polymer dispersion and a binder provides coatings with improved durability.

Abstract: A stable two-component waterborne coating composition comprising an epoxy component A comprising a waterborne epoxy resin, a polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.

Abstract: This invention generally relates to a coating composition which provides a coating film with high hydrophilic resistance and high hydrophobic resistance. The coating composition contains a polymer formed from a monomer composition comprising (a) 45-85 wt % of ethyl ester of acrylic acid or methacrylic acid and (b) 15-54 wt % of itaconic ester with 1 or 2 carbon atoms as a binder of the coating composition, and the weight of sum of (a) and (b) is 65% or more based on the total weight of the polymer.

Abstract: A stable two-component waterborne coating composition comprising an epoxy component A comprising a waterborne epoxy resin, a polymeric dispersant, and pigments and/or extenders; and a component B comprising a curing agent; providing coatings made therefrom with improved anti-corrosion properties; and a method of preparing the coating composition.

Abstract: An automatic ultrasonic scanning system includes a robotic arm with a camera, an ultrasonic probe mounted at an end of the robotic arm, a six-dimension force sensor, and a host computer. The six-dimension force sensor is fixed at the end of the robotic arm, and the ultrasonic probe is fixed on the six-dimension force sensor via a clamp. The six-dimension force sensor can detect a reactive force generated when the ultrasonic probe is in contact with a body surface of a person. The host computer is connected with each of the six-dimension force sensor, the camera and an image collection card via a data line. A controller of the robotic arm is connected to the host computer via an Ethernet communication bus. The ultrasonic machine is connected to the image collection card via a data line.

Abstract: An aqueous dispersion of a hydrophobically-modified alkali-soluble multistage polymer useful as a thickener affording high thickening efficiency and an aqueous coating composition comprising such aqueous dispersion showing good stability after heat aging without compromising stability upon addition of colorants.

Abstract: This invention generally relates to a multi-stage polymer suitable for a grinding additive, a method for producing the multi-stage polymer, a composition and a paint composition comprising the multi-stage polymer and a use of the multi-stage polymer for a grinding additive of a paint composition.

Abstract: A detection device for a mobile phone camera module includes a casing, a power board, a main board, a camera module data interface unit, and a connection port unit, wherein both the power board and the main board are disposed within the casing; the power board is respectively electrically connected with the camera module data interface unit and the connection port unit; the casing has multiple windows for respectively accommodating the camera module data interface unit and the connection port unit; a radiator, a power switch and an indicator light are disposed within the casing, and are electrically connected with both the main board and the power board. Furthermore, the detection device provided by the present invention provides multiple connection ports.

Abstract: An aqueous polymer dispersion and an aqueous coating composition comprising the aqueous polymer dispersion that provides coatings with improved durability.

Abstract: The present invention relates to a detection device for a mobile phone camera module, which includes a casing, a power board, a main board, a camera module data interface unit, and a connection port unit, wherein both the power board and the main board are disposed within the casing; the power board is respectively electrically connected with the camera module data interface unit and the connection port unit; the casing has multiple windows for respectively accommodating the camera module data interface unit and the connection port unit; a radiator, a power switch and an indicator light are disposed within the casing, and are electrically connected with both the main board and the power board. The technical solution of the present invention provides the detection device for the mobile phone camera module which is able to easy to be installed on the test equipment for detecting the mobile phone camera module.

Abstract: This invention relates to a process for preparing color dispersions comprising a first step of contacting water, a first colorant, and a polysaccharide selected from methylcellulose, hydropropylmethylcellulose, hydroxyethylmethylcellulose, hydroxybutylmethylcellulose, hydroxyethylethylcellulose, and the mixture thereof, to form a first colorant dispersion; a second step of contacting the first colorant dispersion with a protective composition comprising an aqueous dispersion of polymer particles, clay, and a peptizing agent to form a dispersion of protected first colorant particles; an optional third step of repeating the first step and the second step with a second colorant that is different from the first colorant to form a dispersion of protected second colorant particles; and an optional fourth step of mixing the dispersions of protected first and second colorant particles to form a multi-color dispersion.

Abstract: A water-based coating composition containing two parts (Parts A and B), (A) binder component containing a waterborne epoxy dispersion and dispersed inorganic particles with a polymeric dispersant and (B) hardener component. The polymeric dispersant contains anti-agglomerating functional groups that are unreactive with oxirane groups of the epoxy dispersion.

Abstract: This invention generally relates to a coating composition which provides a coating film with high hydrophilic resistance and high hydrophobic resistance. The coating composition contains a polymer formed from a monomer composition comprising (a) 45-85 wt % of ethyl ester of acrylic acid or methacrylic acid and (b) 15-54 wt % of itaconic ester with 1 or 2 carbon atoms as a binder of the coating composition, and the weight of sum of (a) and (b) is 65% or more based on the total weight of the polymer.

Abstract: This invention generally relates to a multi-stage polymer suitable for a grinding additive, a method for producing the multi-stage polymer, a composition and a paint composition comprising the multi-stage polymer and a use of the multi-stage polymer for a grinding additive of a paint composition.