A cover window includes a lower surface and an upper surface opposite to the lower surface. The upper surface includes: a center area extending in a first direction and being spaced apart from the lower surface by a first interval in a thickness direction; a first curved area extending in a curved shape from a first side of the center area; and a first area extending from the first curved area in the first direction and being spaced apart from the lower surface by a second interval in the thickness direction; and the first curved area includes a first partial area concavely extending from the center area and a second partial area convexly extending from the first partial area in a cross-sectional view.

A method for preparing the vacuum glass including the steps of stacking two pieces of glasses. There are two nano level funnel-shaped ventilation holes inside the glass adhesive, and a nano level iron ball is placed next to each ventilation hole. The method further includes sending it into the vacuum chamber, vacuuming it, and when the chamber pressure approaches zero, activating the electrostatic field to suck out the remaining air molecules from the ventilation hole, activating the electromagnetic field, attracting the iron ball to the ventilation hole for sealing, then activating the porous hydraulic glue gun, applying glue to fix the iron ball and strengthening the sealing ventilation hole, and then exiting the vacuum chamber to obtain vacuum glass.

A grinding adjusting method of an edge grinding machine, wherein the edge grinding machine includes a grinding carrier placing a sheet material, a grinding wheel, and an image sensing module. The grinding adjusting method includes capturing a sensing image by the image sensing module and detecting a sheet-material part and a grinding-wheel part of the sensing image; computing a first value of the sheet-material part and a second value of the grinding-wheel part; computing an adjusting value according to the first value and the second value; and adjusting a height of the grinding wheel or a height of the grinding carrier by using the adjusting value.

A grinding adjusting method of an edge grinding machine, wherein the edge grinding machine includes a grinding carrier placing a sheet material, a grinding wheel, and an image sensing module. The grinding adjusting method includes capturing a sensing image by the image sensing module and detecting a sheet-material part and a grinding-wheel part of the sensing image; computing a first value of the sheet-material part and a second value of the grinding-wheel part; computing an adjusting value according to the first value and the second value; and adjusting a height of the grinding wheel or a height of the grinding carrier by using the adjusting value.

A vehicular interior rearview mirror assembly includes a mounting structure and a mirror head adjustable about the mounting structure. The mirror head accommodates a mirror reflective element comprising a glass substrate. With the vehicular interior rearview mirror assembly mounted at an interior portion of a vehicle, the mirror head is adjustable about the mounting structure by a driver of the vehicle to adjust the driver's rearward view. The glass substrate includes a periphery surface extending between a planar first surface and a planar second surface and spanning the thickness dimension of the glass substrate. The planar first surface faces the driver of the vehicle. No part of the mirror casing encroaches onto the planar first surface of the glass substrate. The mirror head accommodates a video device for internal cabin surveillance, and wherein the internal cabin surveillance includes detection of drowsiness of the driver of the vehicle.

A vehicular interior rearview mirror assembly includes a mounting structure and a mirror head adjustable about the mounting structure. The mirror head accommodates a mirror reflective element comprising a glass substrate. With the vehicular interior rearview mirror assembly mounted at an interior portion of a vehicle, the mirror head is adjustable about the mounting structure by a driver of the vehicle to adjust the driver's rearward view. The glass substrate includes a periphery surface extending between a planar first surface and a planar second surface and spanning the thickness dimension of the glass substrate. The planar first surface faces the driver of the vehicle. No part of the mirror casing encroaches onto the planar first surface of the glass substrate. The mirror head accommodates a video device for internal cabin surveillance, and wherein the internal cabin surveillance includes detection of drowsiness of the driver of the vehicle.