TWI456777B - Light harvesting module having multiple lens array - Google Patents

Claims (9)

A light collecting module of a multi-lens array, comprising: a light guiding unit having a center; a first multi-lens array disposed above the light guiding unit, comprising a plurality of first lenses, the first a lens system is arranged in a first semi-circular collision structure, each of the first lenses has a first optical axis, and an extension direction of the first optical axis is at a center of the light guiding unit; and a second multi-lens array disposed between the light guiding unit and the first multi-lens array, comprising a plurality of second lenses, each of the second lenses having a second optical axis, and the second The extending direction of the optical axis intersects at the center of the light guiding unit, wherein each of the second optical axes is located between every two adjacent first optical axes, and the second lens systems are arranged in one The second semi-arc structure. The concentrating module of the multi-lens array of claim 1, wherein the first semi-arc structure is outwardly divided into a plurality of intervals by a light receiving angle, and each of the first lens systems Each of the intervals is sequentially located, wherein the angle of acceptance is defined as an angular range in which the sun moves during the daylighting period. The concentrating module of the multi-lens array of claim 2, wherein the light guiding unit has a light receiving radius, each of the first lenses has a first focal length, and the first focal length is It can be adjusted according to the light receiving radius and the light receiving angle. The light collecting module of the multi-lens array of claim 3, wherein a distance between each of the first lenses and the center is the first focal length. The concentrating module of the multi-lens array of claim 1, wherein each of the second lenses has a second focal length, and a distance between each of the second lenses and the center is Is the second focal length. The concentrating module of the multi-lens array of claim 1, wherein an edge of each of the second lenses is located between each of the two adjacent first lenses. The light collecting module of the multi-lens array of claim 1, wherein the light guiding unit has a light receiving radius and a light collecting aperture, and the light collecting aperture is twice the light receiving radius, and each The diameter of the first lens is greater than or equal to the light collecting aperture, and the diameter of each of the second lenses is greater than or equal to the light collecting aperture. The concentrating module of the multi-lens array according to claim 1, wherein the radius of the first semi-arc structure is greater than the radius of the second semi-arc structure. The light collecting module of the multi-lens array of claim 1, wherein each of the first lenses and each of the second lenses is a circularly symmetric lens.