2results about How to "Avoid darkening" patented technology

The application discloses a cellulose solution containing a stabilizer and a preparation method and application thereof, and the preparation method comprises the following steps: stirring and mixing an ionic liquid and a stabilizer at room temperature until a uniform mixture is obtained; adding a cellulose raw material into the obtained mixture, fully stirring and pre-mixing at room temperature to form a pre-dissolved cellulose mixture; and heating and stirring the obtained cellulose mixture until the cellulose raw material is completely dissolved to form a uniform and transparent cellulose solution, that is, the cellulose solution containing the stabilizer is obtained. By adding the stabilizer, the application reduces the color deepening of the ionic liquid in the process of dissolving the cellulose under high temperature or water-containing conditions.

The invention discloses an HUD virtual image and real environment polarization matching detection method. The method comprises the following steps: when an HUD projects a virtual image, collecting a virtual polarization parameter set of a plurality of preset test points in an HUD virtual image picture; synchronously acquiring a real environment polarization parameter set of real environment light in corresponding directions of the plurality of preset test points; inputting the virtual polarization parameter set and the real environment polarization parameter set into a preset polarization matching degree evaluation model, and calculating a matching degree score of each preset test point; when at least one of the matching degree scores of the preset test points is lower than a preset threshold value, it is judged that the test points have polarization conflicts, and polarization conflict types and conflict position information are output. According to the method and the device, the visibility of the virtual image under the polarized sunglasses and the visual consistency of the virtual image and the real ambient light are ensured, so that the darkening, disappearance, glare and visual fatigue of the image are avoided, and the driving safety and the user experience are remarkably improved.