Abstract: A shoe structure includes an upper, an insole, a welt, a welt stitch, a sole, a sole stitch, and a cover strip. The upper has a bottom periphery with inner and outer sides, by which the insole and the welt are located respectively. The upper, the insole and the welt are combinedly stitched by the welt stitch. The sole is located below the insole and the welt, and stitched with the welt by the sole stitch. The cover strip is disposed on a top side of the welt and disposed with at least one stitching thread. The shoe structure can significantly enhance the sense of value to consumers on the condition of only slightly increasing the manufacturing cost, and has the advantages of durability, easy maintenance, aesthetic appearance and low cost.

Abstract: An eye-tracking apparatus includes a first lens group, a light splitting device, a display, an image sensor, a second lens group, and a plurality of light sources. The light splitting device receives a first beam, generates a second beam, and transmits the second beam to a second surface of the first lens group. The display projects a reference mark to a target area through the light splitting device and the first lens group. The image sensor captures a detection image on the target area through the first lens group, the light splitting device, and the second lens group. The second lens group is disposed between the light splitting device and the image sensor. The light sources are disposed around the image sensor and project a plurality of beams to the target area through the first lens group, the light splitting device, and the second lens group.

Abstract: An eye-tracking apparatus includes a first lens group, a light splitting device, a display, an image sensor, a second lens group, and a plurality of light sources. The light splitting device receives a first beam, generates a second beam, and transmits the second beam to a second surface of the first lens group. The display projects a reference mark to a target area through the light splitting device and the first lens group. The image sensor captures a detection image on the target area through the first lens group, the light splitting device, and the second lens group. The second lens group is disposed between the light splitting device and the image sensor. The light sources are disposed around the image sensor and project a plurality of beams to the target area through the first lens group, the light splitting device, and the second lens group.

Abstract: A head mounted display is provided, including a transmissive display, a first lens, a second lens, and a beam splitter coating. The transmissive display includes an active surface. The transmissive display generates a display image beam on the active surface. The first lens includes a first surface facing the active surface of the transmissive display, and a second surface opposite to the first surface. The second lens includes a third surface and a fourth surface opposite to each other. The beam splitter coating is disposed between the second surface of the first lens and the third surface of the second lens. The third surface of a second lens and the second surface of the first lens are attached to each other through the beam splitter coating, the first lens is a convex lens, and the second lens is a concave lens.

Abstract: Provided are a modified Na-montmorillonite and a preparation method thereof, wherein the content of Na+ in the modified sodium-montmorillonite, calculated as Na2O, is not less than 2.0%. The modified Na-montmorillonite has more reasonable microstructure, higher performance, and better quality. Also provided are a method for preparing a modified nanometered Na-montmorillonite from the modified Na-montmorillonite, and the modified nanometered Na-montmorillonite obtained by the method. Also provided are uses and a pharmaceutical composition of the modified Na-montmorillonite or modified nanometered Na-montmorillonite.

Abstract: Provided are a modified Na-montmorillonite and a preparation method thereof, wherein the content of Na+ in the modified sodium-montmorillonite, calculated as Na2O, is not less than 2.0%. The modified Na-montmorillonite has more reasonable microstructure, higher performance, and better quality. Also provided are a method for preparing a modified nanometered Na-montmorillonite from the modified Na-montmorillonite, and the modified nanometered Na-montmorillonite obtained by the method. Also provided are uses and a pharmaceutical composition of the modified Na-montmorillonite or modified nanometered Na-montmorillonite.