Lens device for compensating aberration in the optical system and the adjustment method thereof

A lens assembly device, comprising:

• a plurality of lenses having a total number of lenses being at least 3, wherein the plurality of lenses are arranged along an optical axis, a light moves forward along a first direction of the optical axis, and
• at least a portion of the plurality of lenses are divided into 2n groups including n odd-numbered groups and n even-numbered groups, n is a positive integer, a j-th group of the 2n groups has m(j) lenses, j is a positive integer being no larger than 2n, m(j), is at least 2, the lenses in each of the 2n groups include a 1(j)st lens, . . . , an (i−1)(j)-th lens, an i(j)-th lens, . . . , and an m(j)-th lens, i is a positive integer being no larger than m(j), the odd-numbered groups from the 1st group to the (2n−1)-th group correspond sequentially to the even-numbered groups from the 2nd group to the 2n-th group, and the lenses in the odd-numbered groups correspond sequentially to the lenses in the corresponding even-numbered groups;
• a plurality of retention devices, wherein each of the plurality of retention devices retains an edge of a lens of the odd-numbered groups and the even-numbered groups through a plurality of support elements, the i(2n−1)-th lens has k support elements, each of the plurality of support elements has a retention position, and the retention positions of the plurality of support elements for both the i(2n−1)-th lens of the (2n−1)-th group and the i(2n)-th lens of the 2n-th group are the same;
• and
• a rotating unit coupled to the plurality of retention devices and configured to rotate the retention position of an h-th support element of the k support elements for the i(2n−1)-th lens by a rotation angle α(h) with respect to the retention position of a first support element of the k support elements for the (i−1)(2n−1)-th lens, wherein
• ∝
• (
• h
• )
• =
• 360
• ⁢
• °
• k
• ×
• m
• (
• 2
• ⁢
• n
• -
• 1
• )
• +
• (
• h
• -
• 1
• )
• ×
• 360
• ⁢
• °
• k
• ,
• where h is an integer from 1 to k, so that when observed from the optical axis, the retention position of the h-th support element of the k support elements for the i(2n−1)-th lens is the same as the retention position of the h-th support element of the k support elements for the i(2n)-th lens, and the retention position of the h−th support element for the (i−1)(2n)-th lens is different from both the retention positions of the h−th and the (h−1)-th support elements for the i(2n)-th lens.

A lens assembly device, comprising:

• a plurality of lenses arranged sequentially along an optical axis;
• and
• a plurality of retention devices for respectively retaining the plurality of lenses, wherein:
• each of the plurality of retention devices includes a plurality of support elements for retaining an edge of the respective lens under a relatively lowest stress;
• the plurality of support elements for a first lens in the plurality of lenses have a first retention position combination;
• the plurality of support elements for a second lens in the plurality of lenses have a second retention position combination;
• there is a rotation angle α between the first retention position combination and the second retention position combination;
• and
• both the first lens and the second lens belong to a first group in the plurality of lenses, and the rotation angle α is calculated from
• α
• =
• 360
• ⁢
• °
• k
• ×
• m
• +
• l
• ×
• 360
• ⁢
• °
• k
• ,
• wherein there are m lenses in the first group, there are k support elements for each of the first and the second lenses, and l is an integer.