Adjustable flash module

1 . An adjustable flash module, comprising:

a flash;

a base comprising a bottom and a sidewall located on the bottom, wherein the flash is disposed on the bottom, and the sidewall surrounds the flash;

a deformable optical lens disposed on the sidewall, and located above the flash; and

an actuator disposed at an edge of the deformable optical lens, and configured to cause the deformable optical lens to generate deformation, wherein the actuator comprises:

a first ring structure disposed around the deformable optical lens;

a second ring structure surrounding the first ring structure;

a first connecting section connecting the first ring structure with the second ring structure; and

a second connecting section connecting the second ring structure with the sidewall, wherein a first gap exists between the first ring structure and the second ring structure, and a second gap exists between the second ring structure and the sidewall.

2 . The adjustable flash module according to claim 1 , wherein the actuator is configured to cause the deformable optical lens to generate deformation in at least one degree of freedom among six degrees of freedom in space.

3 . The adjustable flash module according to claim 2 , wherein the deformation generated in the at least one degree of freedom among the six degrees of freedom comprises at least one of extension/contraction, bending, and twisting.

4 . The adjustable flash module according to claim 1 , wherein each of the first ring structure and the second ring structure comprises a bottom ring and a piezoelectric material ring disposed on the bottom ring, the piezoelectric material ring is sandwiched between two electrodes, in response to voltage being applied to the two electrodes causing the piezoelectric material ring to generate deformation, the actuator causes the deformable optical lens to generate extension/contraction, bending, twisting, and lifting/lowering or combinations thereof, thereby changing a light field distribution.

5 . The adjustable flash module according to claim 4 , wherein the piezoelectric material ring of the first ring structure comprises a plurality of piezoelectric material arc segments, and the piezoelectric material arc segments have gaps therebetween and are not connected.

6 . The adjustable flash module according to claim 4 , wherein the piezoelectric material ring of the second ring structure comprises a plurality of piezoelectric material arc segments, and the piezoelectric material arc segments have gaps therebetween and are not connected.

7 . The adjustable flash module according to claim 1 , wherein the deformable optical lens is a gel lens or a flexible optical plate.

8 . The adjustable flash module according to claim 1 , wherein the deformable optical lens comprises:

a hard bottom cover;

a flexible top cover; and

a liquid lens filled between the hard bottom cover and the flexible top cover.

9 . The adjustable flash module according to claim 1 , wherein the deformable optical lens is disposed on the sidewall through the actuator.

10 . An adjustable flash module comprising:

a flash;

a base comprising a bottom and a sidewall located on the bottom, wherein the flash is disposed on the bottom, and the sidewall surrounds the flash;

a deformable optical lens disposed on the sidewall, and located above the flash, wherein the deformable optical lens is a single-layer structure; and

an actuator disposed at an edge of the deformable optical lens, and configured to cause the deformable optical lens to generate deformation, wherein the actuator comprises a first piezoelectric material ring and a second piezoelectric material ring disposed on an upper side and a lower side of the edge of the deformable optical lens respectively.

11 . The adjustable flash module according to claim 10 , further comprising an optical adhesive disposed between the deformable optical lens and the flash.