Please select the most similar patent number from A, B, C and D. Which number is?
Disclosed is a contact lens with an element protection function, the contact lens comprising a light transmissive body (1), a functional element (2) and a protective layer (3). The functional element (2) is arranged on the light transmissive body (1), and the protective layer (3) is arranged on the light transmissive body (1) and covers the functional element (2). The functional element (2) is enclosed by the light transmitting body (1) and the protection layer (3) and is isolated from the outside, and the protective layer (3) comprises a film forming polymer, a hydrophilic polymer and a solvent. The contact lens can achieve the effect of supporting and protecting the functional element by means of the design of the protective layer with particular compositions, and the protective layer can well apply to a manufacturing process for the contact lens.
A: A composite electrochromic material, and a preparation method therefor and an application thereof, the material comprising a core layer, a skin layer having an electrochromic function, and a light-transmitting protective layer formed by a flexible polymer material, that are arranged in sequence. The material of the core layer comprises a fluid conductive mixture, and the conductive mixture comprises liquid metal and carboxylated carbon nanotubes. The preparation method comprises: carrying out spinning by co-extrusion using a three-channel nozzle to form hollow double-layer fibers each having a skin layer and a protective layer as well as a cavity, and injecting the conductive mixture into the cavities of the hollow double-layer fibers. The material has excellent deformation ability, stable and sensitive color changing function, and a controllable deformation degree. The material has a stable color changing function even in the case of severe deformation, has good fatigue resistance, and is suitable for the preparation of intelligent textiles.
B: A self-luminous and easily identifiable cable and manufacturing method thereof. The cable comprises an electrical or optical cable core (1), and a protection layer (2) disposed outside the electrical or optical cable core (1). The protection layer (2) has a continuous spiral groove (3) on a surface thereof. A luminous string (41) is provided in the spiral groove (3) and does not protrude from the surface of the protection layer (2). A transparent light-emitting strip (5) is provided outside the protection layer (2) and surrounds the spiral groove (3) and the protection layer (2). A distance (L) between the centers of adjacent grooves (3) of the spiral groove (3) is 3-10 times the diameter of the electrical or optical cable. The electrical or optical cable core (1) comprises at least one power wire for power transmission, or at least one optical fiber for signal transmission, or at least one lead containing metals for signal transmission. The self-luminous and easily identifiable cable is simple in structure, easy to manufacture, low in cost, high in testing pass rate, convenient to achieve identification at night and under bright light condition, and having an aesthetic product appearance.
C: Provided is a display device having fingerprint recognition function, including: a fingerprint recognition module for sensing a fingerprint; a substrate arranged above the fingerprint recognition module; a plurality of anodes arranged above the substrate; a plurality of light-emitting elements arranged above the plurality of anodes; a plurality of cathodes arranged above the plurality of light-emitting elements, each of the plurality of cathodes having a cylindrical shape; and a protective layer arranged between two adjacent cathodes, wherein the refractive index of each of the plurality of cathodes is smaller than the refractive index of the protective layer. Provided is also a manufacturing method of the display device having fingerprint recognition function.
D: A structural color sun contact lens, comprises a lens (10): the center of the lens (10) is a pupil zone (101), and regions other than the pupil zone (101) are non-pupil zones (102); a photonic crystal structure (11) is at least designed in the pupil zone (101), and a photochromic material and/or a thermochromic material is at least distributed in the pupil zone (101), the photonic crystal structure (11) forming a structural color pattern in the sun contact lens. The structural color contact sun lens may enable consumers to experience life with more color, and may also effectively block visible light of a certain wavelength; the pupil zone (101) of the contact lens may promptly change color so as to reduce light passing through the lens when light is too strong or temperature is too high, thereby promptly and effectively protecting the eyes and preventing strong optical radiation, keeping the eyes safe.
Answer: D