Abstract: The invention provides an optical imaging lens, which comprises a fixing ring, a barrel and a plurality of lens elements arranged in the barrel. A front end of the barrel includes four circular arc wall parts and four vertical wall parts, which are spaced apart from each other and symmetrically arranged, and each vertical wall part includes a groove structure along an optical axis direction, which includes a bottom surface and two inclined planes, wherein 100 degrees???130 degrees and 0.3 mm?Tsw?0.6 mm are satisfied. The fixing ring comprise four protruding structures in the optical axis direction, and the protruding structure of the fixing ring and the groove structure of the barrel can complement each other to form an alignment structure.

Abstract: A support element for an optical lens assembly having an optical axis is provided. The support element includes multiple light-shielding parts and multiple supporting parts. The light-shielding parts are respectively connected to the supporting parts along a long axis direction. Each supporting part has a first surface, a second surface, a first inner connection surface, and a first outer connection surface. At least one of the first surface and the second surface has multiple protruding platforms. The support elements satisfy the following conditional expressions: 0.1 mm?(ROp?RIp)?(ROs?RIs)?0.1 mm. ROp is the maximum radius from the outer side of the protruding platforms to the optical axis. RIp is the minimum radius from the inner side of the protruding platforms to the optical axis. RIs is the minimum radius from the inner side of the surface where the protruding platforms are located to the optical axis.

Abstract: A light-shielding element, including an object-side mechanical surface facing an object side, an image-side mechanical surface facing an image side, an inner-side surface facing an optical axis, and an outer-side surface facing away from the inner-side surface. The light-shielding element further includes at least one cut. The at least one cut extends from the inner-side surface toward the outer-side surface and penetrates the object-side mechanical surface and the image-side mechanical surface. The inner-side surface surrounds the optical axis and forms a through hole. A contour of the through hole has a shortest distance D1 passing through the optical axis and a longest distance D2 passing through the optical axis. The light-shielding element satisfies the following conditional expression: 1.200?D2/D1?3.000. An optical imaging lens is also provided.

Abstract: A modified polyester staple fiber and a preparation method of the modified polyester staple fiber are provided. The modified polyester staple fiber contains a modified nanocomposite material including an organic compound, the organic compound including one of tea polyphenol, naringin, and emodin. The organic compound is in a weight percentage range of approximately 0.1%-5% based on a total weight of the modified polyester staple fiber.

Abstract: A light-shielding element, including an object-side mechanical surface facing an object side, an image-side mechanical surface facing an image side, an inner-side surface facing an optical axis, and an outer-side surface facing away from the inner-side surface. The light-shielding element further includes at least one cut. The at least one cut extends from the inner-side surface toward the outer-side surface and penetrates the object-side mechanical surface and the image-side mechanical surface. The inner-side surface surrounds the optical axis and forms a through hole. A contour of the through hole has a shortest distance D1 passing through the optical axis and a longest distance D2 passing through the optical axis. The light-shielding element satisfies the following conditional expression: 1.200?D2/D1?3.000. An optical imaging lens is also provided.

Abstract: A modified polyester staple fiber and a preparation method of the modified polyester staple fiber are provided. The modified polyester staple fiber contains a modified nanocomposite material including an organic compound, the organic compound including one of tea polyphenol, naringin, and emodin. The organic compound is in a weight percentage range of approximately 0.1%-5% based on a total weight of the modified polyester staple fiber.