Contactless key for projecting suspended image
A contactless key is provided, including a substrate, a plurality of light-emitting elements, a light-blocking element, and an imaging film. The light-emitting elements are fixed to the substrate. The light-blocking element is fixed to the substrate. The light-blocking element has a plurality of accommodating spaces, a first surface, and a second surface. The first surface is opposite the second surface, and the first surface has a plurality of light outlets. The accommodating spaces penetrate through the first surface and the second surface and communicate with each other via the light outlets. The light-emitting elements are respectively located in the accommodating spaces. The imaging film is opposite the first surface.
1 . A contactless key for projecting a suspended image, the contactless key consisting of
a substrate;
a plurality of light-emitting elements, fixed on the substrate;
a light-blocking element, fixed on the substrate, wherein the light-blocking element has a plurality of accommodating spaces, a first surface, and a second surface, the first surface is opposite to the second surface, the first surface has a plurality of light outlets, the accommodating spaces penetrate through the first surface and the second surface and are respectively communicated with the light outlets, and the light-emitting elements are respectively located in the accommodating spaces; and
an imaging film, disposed opposite the first surface;
wherein the light-blocking element comprises a plurality of light-blocking walls, the first surface and the second surface are respectively located at two opposite tail ends of the light-blocking walls, the light-blocking walls interlace each other and surround the accommodating spaces;
the contactless key for projecting a suspended image further comprising a lens layer, wherein the lens layer is disposed on a side of the imaging film back away from the substrate;
the contactless key for projecting a suspended image further comprising a suspended touch layer, wherein the suspended touch layer is disposed on a side of the lens layer back away from the imaging film.
2 . The contactless key for projecting a suspended image according to claim 1 , wherein the light-blocking walls are tightly connected to each other.
3 . The contactless key for projecting a suspended image according to claim 2 , wherein the light-blocking walls are integrated or separated.
4 . The contactless key for projecting a suspended image according to claim 2 , wherein the light-blocking walls each have two light-reflective surfaces, the two tail ends of each of the light-blocking walls comprise a top-end and a bottom-end, the first surface is located at the top-ends, the second surface is located at the bottom-ends, the two light-reflective surfaces are opposite to each other and located between the top-end and the bottom-end, and the two light-reflective surfaces are located in the accommodating space.
5 . The contactless key for projecting a suspended image according to claim 4 , wherein the light-blocking walls each have a width, the width is between the two light-reflective surfaces, and the width gradually increases from the top-end to the bottom-end.
6 . The contactless key for projecting a suspended image according to claim 5 , wherein the second surface at the bottom-end comprises a plane, and the two light-reflective surfaces are inclined relative to the plane.
7 . The contactless key for projecting a suspended image according to claim 5 , wherein the two light-reflective surfaces each comprise a concave curved surface.
8 . The contactless key for projecting a suspended image according to claim 4 , wherein the light-blocking walls each comprise a body and a light reflective layer, the top-end and the bottom-end are respectively located at two opposite sides of the body, the light reflective layer is disposed at part of the body between the top-end and the bottom-end to form the two light-reflective surfaces, and the body and the light reflective layer are integrated or separated.
9 . The contactless key for projecting a suspended image according to claim 2 , wherein the light-blocking element further comprises a frame, and the frame surrounds and is tightly connected to the light-blocking walls.
10 . The contactless key for projecting a suspended image according to claim 1 , wherein the first surface comprises a plane.