Curved fly's-eye lens based on DMD digital photoetching and preparation method of curved fly's-eye lens
A curved surface compound eye and lens technology, which is applied in the field of curved surface compound eye lens and its preparation, can solve the problems of small field of view, cumbersome process, and high cost, and achieve the effects of controllable arc bending, reduced manufacturing difficulty, and improved production efficiency
Pending Publication Date: 2022-04-15
XIHUA UNIV
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Abstract
The invention discloses a curved fly's-eye lens based on DMD digital lithography and a preparation method thereof.The curved fly's-eye lens is of a hemispherical structure, the hemispherical structure sequentially comprises a hemispherical curved focal plane, an elastic film and a curved micro-lens array from inside to outside, all levels of sub-eyes form the curved micro-lens array, and the curved micro-lens array comprises a spherical curved focal plane, an elastic film and a curved micro-lens array. All the levels of sub-eyes comprise a first-level sub-eye located in the center of the curved-surface micro-lens array and a plurality of circles of n-level sub-eyes arranged with the first-level sub-eye as the circle center, wherein n is an integer larger than or equal to 2. A plurality of photosensitive sensors in one-to-one correspondence with the sub-eyes are uniformly arranged on one surface, facing the elastic film, of the hemispherical curved focal plane. According to the invention, three-dimensional photoetching is carried out on the micro-lens structure through digital photoetching of the digital micro-mirror DMD, and the micro-lens array can be obtained only through one-time reverse molding. The aperture and rise of the sub-eye and the curvature radius of the curved fly-eye lens are controllable, the manufactured micro-lens is high in size and surface shape precision and good in surface uniformity, the manufacturing process is simple, and the cost is low.
Application Domain
Lens
Technology Topic
OphthalmologySurface shape +7
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