Adjustable flash lamp module

Abstract

The invention provides an adjustable flash lamp module. The adjustable flash lamp module comprises a flash lamp, a base, a deformable optical lens and an actuator, the base comprises a bottom and a side wall located on the bottom, the flash lamp is arranged on the bottom, and the side wall surrounds the flash lamp. The deformable optical lens is disposed on the sidewall and above the flash lamp. The actuator is arranged on the edge of the deformable optical lens and used for driving the deformable optical lens to deform.

Description

Technical Field

[0001] The invention relates to a flashlight module, in particular to an adjustable flashlight module. Background Art

[0002] In the field of camera technology, sufficient illumination helps to clearly capture the image of an object. Therefore, a flash module is almost always present in the camera together with a camera module. As the distance between the object and the camera and the field of view of the camera are different, the appropriate illumination required to be provided by the flash module will also be different. For example, if you want to shoot a farther object or shoot at a smaller field of view, the flash module needs to provide more concentrated illumination to illuminate the distant object without wasting the illumination energy on the larger field of view. On the other hand, if you want to shoot a closer object or shoot at a larger field of view, the flash module needs to provide more dispersed illumination with a larger field of view so that the illumination of the object is not too bright and can illuminate a larger field of view.

[0003] However, conventional flash modules use fixed lighting and are unable to adjust lighting in response to changes in the distance of an object or the angle of view. Summary of the invention

[0004] The present invention is directed to an adjustable flash module, which can adjust the lighting using a simple structure.

[0005] One embodiment of the present invention provides an adjustable flash module, comprising a flash, a base, a deformable optical lens and an actuator. The base comprises a bottom and a side wall located on the bottom, wherein the flash is arranged on the bottom, and the side wall surrounds the flash. The deformable optical lens is arranged on the side wall and is located above the flash. The actuator is arranged at the edge of the deformable optical lens and is used to drive the deformable optical lens to deform.

[0006] In the adjustable flash module of the embodiment of the present invention, since the actuator is configured at the edge of the deformable optical lens to drive the deformable optical lens to deform, the adjustable flash module of the embodiment of the present invention can achieve the effect of adjusting lighting with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1A is a cross-sectional schematic diagram of an adjustable flash module according to an embodiment of the present invention;

[0008] Figure 1B for Figure 1A A schematic top view of an adjustable flash module;

[0009] Figure 2A and Figure 2B They are Figure 1AA cross-sectional schematic diagram of an adjustable flash module in which a deformable optical lens produces two different deformation states;

[0010] FIG. 3A to FIG. 3C They are cross-sectional schematic diagrams of an adjustable flash module according to another embodiment of the present invention, in which a deformable optical lens thereof generates three different states;

[0011] Figure 4 is a cross-sectional schematic diagram of an adjustable flash module according to another embodiment of the present invention;

[0012] Figure 5A and Figure 5B It is a cross-sectional schematic diagram of an adjustable flash module according to another embodiment of the present invention, in which a deformable optical lens thereof generates two different deformation states. DETAILED DESCRIPTION

[0013] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0014] Figure 1A is a cross-sectional schematic diagram of an adjustable flash module according to an embodiment of the present invention, Figure 1B for Figure 1A A top view schematic diagram of an adjustable flash module, wherein Figure 1A for Figure 1B A cross-sectional view of the adjustable flash module along line II. Figure 1A and Figure 1B The adjustable flash module 100 of this embodiment includes a flash 110, a base 120, a deformable optical lens 130 and an actuator 140. The base 120 includes a bottom 122 and a side wall 124 located on the bottom, wherein the flash 110 is disposed on the bottom 122, and the side wall 124 surrounds the flash 110. The deformable optical lens 130 is disposed on the side wall 124 and is located above the flash 110. The actuator 140 is disposed at the edge of the deformable optical lens 120 and is used to drive the deformable optical lens 130 to deform. In this embodiment, the flash 110 may include a light emitting diode or other appropriate light emitting elements. The light emitted by the flash 110 will penetrate the deformable optical lens 130 and be transmitted to the outside world to provide lighting to the outside world, and the deformable optical lens 130 can modulate the light emitted by the flash 110 into different light field distributions in different shapes, thereby forming different lighting effects. In addition, in this embodiment, the deformable optical lens 130 is configured on the side wall 124 through the actuator 140 .

[0015] Figure 2A and Figure 2B They are Figure 1AA cross-sectional diagram of an adjustable flash module in which a deformable optical lens produces two different deformation states, and FIG. 3A to FIG. 3C The adjustable flash module of another embodiment of the present invention is a schematic cross-sectional view of the deformable optical lens in three different states. Figure 1A , Figure 1B , Figure 2A , Figure 2B and FIG. 3A to FIG. 3C The deformable optical lens 130 may be a plastic lens (such as FIG. 3A to FIG. 3C ) or flexible optical panels (such as Figure 1A , Figure 2A , Figure 2B The actuator 140 is used to drive the deformable optical lens 130 to deform in at least one of the six degrees of freedom in space. In this embodiment, the deformation generated in at least one of the six degrees of freedom includes expansion and contraction (such as Figure 3A and Figure 3C ), bending (such as Figure 2A ) and torsion (such as Figure 2B )

[0016] In this embodiment, the actuator 140 includes a first annular structure 210, a second annular structure 220, a first connecting segment 230 and a second connecting segment 240. The first annular structure 210 is disposed around the deformable optical lens 130, and the second annular structure 220 surrounds the first annular structure 210. The first connecting segment 230 connects the first annular structure 210 and the second annular structure 220, and the second connecting segment 240 connects the second annular structure 220 and the sidewall 124. The first annular structure 210 and the second annular structure 220 can be closed loop structures (i.e., continuous annular structures) or open loop structures (i.e., annular structures with gaps or openings or discontinuous annular structures), which are collectively referred to as annular structures herein.

[0017] In this embodiment, each of the first annular structure 210 and the second annular structure 220 includes a bottom ring 212 and a piezoelectric material ring 214 disposed on the bottom ring 212. The piezoelectric material ring 214 is sandwiched between two electrodes 216 and 218 (see Figure 1A ), one electrode 216 (i.e., the lower electrode) is disposed between the bottom ring 212 and the piezoelectric material ring 214, and the other electrode 218 (i.e., the upper electrode) is disposed on the upper surface of the piezoelectric material ring 214 facing away from the bottom ring 212, wherein the shape of the upper electrode (i.e., the electrode 218) in the top view may be consistent with the shape of the piezoelectric material ring 214 in the top view.

[0018] When the two electrodes 216 and 218 apply voltage to cause the piezoelectric material ring 214 to deform, the actuator 140 drives the deformable optical lens 130 to expand and contract (such as Figure 3A and Figure 3C ), bending (such as Figure 2A ), twist (such as Figure 2B ) and lifting (such as Figure 3B ) or a combination thereof, thereby changing the light field distribution. For example, when the two electrodes 216 and 218 apply voltage to reduce the radius of the piezoelectric material ring 214 of the first ring structure 210, the radius of the bottom ring 212 of the first ring structure 210 will be reduced, thereby squeezing the edge of the deformable optical lens 130, so that the deformable optical lens 130 produces Figure 2A The bending Figure 3B The rise or Figure 3C The radius shrinks but the thickness increases.

[0019] In this embodiment, the piezoelectric material ring 214 of the first ring structure 210 includes a plurality of piezoelectric material arc segments R1, R2 ( Figure 1B In the figure, two piezoelectric material arc segments R1 and R2 are used as an example, and there is a gap G between these piezoelectric material arc segments R1 and R2 and they are not connected. In some embodiments, these piezoelectric material arc segments can have a variety of different numbers, be located in various different positions, and have various different sizes. The present invention does not limit the number of piezoelectric material arc segments to the number of piezoelectric material arc segments. Figure 1B The two piezoelectric material arc segments R1 and R2 shown are limited. In addition, in another embodiment, the piezoelectric material ring 214 of the first annular structure 210 can also be a complete and continuous circular ring, just like the piezoelectric material ring 214 of the second annular structure 220. In another embodiment, the piezoelectric material ring 214 of the second annular structure 220 includes a plurality of piezoelectric material arc segments (like the plurality of piezoelectric material arc segments R1, R2 of the piezoelectric material ring 214 of the first annular structure 210), and these piezoelectric material arc segments have gaps (like the gap G between these piezoelectric material arc segments R1, R2 of the first annular structure 210) and are not connected.

[0020] In the adjustable flash module 100 or 100a of the present embodiment, since the actuator 140 is configured at the edge of the deformable optical lens 130 to drive the deformable optical lens 130 to deform, the adjustable flash module 100 or 100a of the present embodiment can utilize a simple structure to achieve the effect of adjusting the lighting, and then control the focal distance or field of view of the lighting of the adjustable flash module 100 or 100a to meet the lighting requirements of shooting with different focal lengths of the camera module.

[0021] Figure 4 FIG. 1 is a cross-sectional diagram of an adjustable flash module according to another embodiment of the present invention. Figure 4 The adjustable flash module 100b of this embodiment is Figure 1AThe adjustable flash module 100b of the present embodiment is similar to the adjustable flash module 100, and the main differences between the two are as follows. In the adjustable flash module 100b of the present embodiment, the deformable optical lens 130b includes a hard bottom cover 132, a flexible top cover 134 and a liquid lens 136, wherein the liquid lens 136 is filled between the hard bottom cover 132 and the flexible top cover 134. In this way, the deformable optical lens 130b can also be driven by the actuator 140 to change shape.

[0022] Figure 5A and Figure 5B FIG. 1 is a cross-sectional view of an adjustable flashlight module according to another embodiment of the present invention, in which the deformable optical lens has two different deformation states. Figure 1A The adjustable flash module 100c of the present embodiment is similar to the adjustable flash module 100, and the main differences between the two are described as follows. In the adjustable flash module 100c of the present embodiment, the actuator 140c includes a first piezoelectric material ring 250 and a second piezoelectric material ring 260, which are respectively arranged on the upper and lower sides of the edge of the deformable optical lens 130. The adjustable flash module 100c also includes an optical glue 150, which is arranged between the deformable optical lens 130 and the flash 110, and attaches the deformable optical lens 130 and the flash 110. When a voltage is applied to the first piezoelectric material ring 250 and the second piezoelectric material ring 260 to deform them, the deformable optical lens 130 can bend accordingly, thereby causing the optical glue 150 to deform. In this way, the lighting effect of the adjustable flash module 100c can also be changed, such as changing the focus distance or field of view of the lighting of the adjustable flash module 100c.

[0023] In this embodiment, electrodes are also provided on the upper and lower sides of the first piezoelectric material ring 250, and electrodes are also provided on the upper and lower sides of the second piezoelectric material ring 260 (eg, Figure 1A In the partial enlarged view of FIG. 2 , electrodes 216 and 218 are provided on the upper and lower sides of the piezoelectric material ring 214. Figure 5B In the embodiment, the first piezoelectric material ring 250 is subjected to the voltage applied by the electrode and its radius is enlarged, while the second piezoelectric material ring 260 is subjected to the voltage applied by the electrode and its radius is reduced, which can further drive the deformable optical lens 130 to bend.

[0024] In the adjustable flash module of the embodiment of the present invention, since the actuator is configured at the edge of the deformable optical lens to drive the deformable optical lens to deform, the adjustable flash module of the embodiment of the present invention can achieve the effect of adjusting lighting with a simple structure.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable flash module, characterized in that: include: flash; A base, comprising a bottom and a side wall located on the bottom, wherein the flashlight is disposed on the bottom, and the side wall surrounds the flashlight; A deformable optical lens, disposed on the side wall and located above the flashlight; as well as The actuator is disposed at the edge of the deformable optical lens and is used to drive the deformable optical lens to deform.

2. The adjustable flash module according to claim 1, characterized in that: The actuator is used to drive the deformable optical lens to deform in at least one degree of freedom of the six degrees of freedom in space.

3. The adjustable flash module according to claim 2, characterized in that: The deformation generated in at least one of the six degrees of freedom includes at least one of extension, bending and torsion.

4. The adjustable flash module according to claim 1, characterized in that: The actuator comprises: A first annular structure, disposed around the deformable optical lens; A second annular structure surrounding the first annular structure; a first connecting section, connecting the first annular structure and the second annular structure; and The second connecting section connects the second annular structure and the side wall.

5. The adjustable flash module according to claim 4, characterized in that: Each of the first annular structure and the second annular structure includes a bottom ring and a piezoelectric material ring disposed on the bottom ring, and the piezoelectric material ring is clamped between two electrodes. When the two electrodes apply voltage to cause the piezoelectric material ring to deform, the actuator drives the deformable optical lens to expand, contract, bend, twist, lift or a combination thereof, thereby changing the light field distribution.

6. The adjustable flash module according to claim 5, characterized in that: The piezoelectric material ring of the first ring structure includes a plurality of piezoelectric material arc segments, and the plurality of piezoelectric material arc segments have gaps and are not connected.

7. The adjustable flash module according to claim 5, characterized in that: The piezoelectric material ring 214 of the second ring structure 220 includes a plurality of piezoelectric material arc segments, and the plurality of piezoelectric material arc segments have gaps between them and are not connected.

8. The adjustable flash module according to claim 1, characterized in that: The deformable optical lens is a plastic lens or a flexible optical plate.

9. The adjustable flash module according to claim 1, characterized in that: The deformable optical lens comprises: Hard bottom cover; Flexible top cover; and The liquid lens is filled between the hard bottom cover and the flexible top cover.

10. The adjustable flash module according to claim 1, characterized in that: The deformable optical lens is configured on the side wall through the actuator.

11. The adjustable flash module according to claim 1, characterized in that: The actuator includes a first piezoelectric material ring and a second piezoelectric material ring, which are respectively arranged on the upper and lower sides of the edge of the deformable optical lens.

12. The adjustable flash module according to claim 11, characterized in that: It also includes optical glue, which is arranged between the deformable optical lens and the flash.

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