Abstract: A dyeing method for functional contact lenses includes the following steps: providing a dry lens body, including hydrogel with 0-90% water content, silicone hydrogel with 0-90% water content, or a combination thereof; preparing an amphoteric polymethyl ether prepolymer, combining the amphoteric polymethyl ether prepolymer with a hydrophilic monomer to form a masking ring material, and attaching the masking ring material to an inner surface of the dry lens body to form a masking ring layer; dropping a colorant onto the inner surface, making the masking ring layer surround the colorant, irradiating the colorant with an ultraviolet light and then heating and fixing the colorant to form a dyed layer on the inner surface; and placing the dry lens body in water to hydrate and removing the masking ring layer to obtain a wet lens body.

Abstract: A dyeing method for functional contact lenses includes the following steps: providing a dry lens body, including hydrogel with 0-90% water content, silicone hydrogel with 0-90% water content, or a combination thereof; preparing an amphoteric polymethyl ether prepolymer, combining the amphoteric polymethyl ether prepolymer with a hydrophilic monomer to form a masking ring material, and attaching the masking ring material to an inner surface of the dry lens body to form a masking ring layer; dropping a colorant onto the inner surface, making the masking ring layer surround the colorant, irradiating the colorant with an ultraviolet light and then heating and fixing the colorant to form a dyed layer on the inner surface; and placing the dry lens body in water to hydrate and removing the masking ring layer to obtain a wet lens body.

Abstract: An electronic device includes an upper body, a lower cover, a lower body, and a slide mechanism installed between the upper body and the lower cover. The lower cover is fastened on the lower body. The mechanism includes a fixed element, a slide element, and two plates. The fixed element is fastened on the lower cover. The slide element may slide relative to the fixed element. The plates are fastened on two opposite sides of the slide element and the upper body.

Abstract: An electronic device includes an upper body, a lower cover, a lower body, and a slide mechanism installed between the upper body and the lower cover. The lower cover is fastened on the lower body. The mechanism includes a fixed element, a slide element, and two plates. The fixed element is fastened on the lower cover. The slide element may slide relative to the fixed element. The plates are fastened on two opposite sides of the slide element and the upper body.