Abstract: A projection lens includes a display chip, an equivalent flat lens, a first refractive lens group, a diaphragm, and a second refractive lens group that are successively arranged; wherein the first refractive lens group includes a first lens and a double-cemented lens that are successively arranged, wherein the double-cemented lens includes a second lens and a third lens. A total length of the projection lens is less than 32 mm, an angle of view of the projection lens is 65 degrees, and a depth of field of the projection lens at a projection distance of 400 mm reaches ±170 mm.

Abstract: Embodiments of the present disclosure relate to the technical field of projection, and provide a double telecentric projection lens and a projection system. The double telecentric projection lens includes a first lens group, an aperture stop, and a second lens group that are successively arranged from an object side to an image side, a center of the aperture stop being at a rear focus of the first lens group and a front focus of the second lens group; wherein a focal power of the double telecentric projection lens is greater than 0.03, an object-side numerical aperture of the double telecentric projection lens is 1.7, and an image-side numerical aperture of the double telecentric projection lens is 5.95.

Abstract: The present disclosure relates to a vibration reduction device, an electronic device and mobile equipment containing same. The vibration reduction device comprises: a first fixing component (10) which is a frame structure (11); a second fixing component (100) arranged in the center or near the center position of the first fixing component (10); and a vibration reduction connecting component (50) positioned between the first fixing component (10) and the second fixing component (100) and used for connecting both together. The vibration reduction connecting component (50) comprises a vibration reduction connecting frame (53) connected to the frame structure (11), and an inverted U-shaped structure (51) positioned in the vibration reduction connecting frame (53), connected to the lower part of the vibration reduction connecting frame (53) through supporting legs and connected with the second fixing component (100).

Abstract: The present disclosure relates to a vibration reduction device, an electronic device and mobile equipment containing same. The vibration reduction device comprises: a first fixing component (10) which is a frame structure (11); a second fixing component (100) arranged in the center or near the center position of the first fixing component (10); and a vibration reduction connecting component (50) positioned between the first fixing component (10) and the second fixing component (100) and used for connecting both together. The vibration reduction connecting component (50) comprises a vibration reduction connecting frame (53) connected to the frame structure (11), and an inverted U-shaped structure (51) positioned in the vibration reduction connecting frame (53), connected to the lower part of the vibration reduction connecting frame (53) through supporting legs and connected with the second fixing component (100).

Abstract: Methods for reducing the concentration of reactive carbonyl species, for example, in thermally processed foods, including beverages, are provided herein.

Abstract: Methods for reducing the concentration of reactive carbonyl species, for example, in thermally processed foods, including beverages, are provided herein.