Adjustable lens group

Abstract

The invention provides an adjustable lens group. The adjustable lens group comprises a first lens group, a second lens group, a pumping module and a photosensitive element group, the first lens group receives the first imaging light. The second lens group is adjacent to the first lens group and receives the second imaging light. The pumping module is located between the first lens group and the second lens group and selectively enables the first imaging light received by the first lens group to pass through or not to pass through. The pumping module comprises a cavity space and an actuating device. The cavity space selectively accommodates or discharges the first medium and the second medium through the actuating device. When the first medium is accommodated in the cavity space, the first imaging light cannot pass through the second space. The photosensitive element group is located at the downstream of the light path of the pumping module and is used for capturing the first imaging light and the second imaging light.

Description

Technical Field

[0001] The invention relates to a lens group, in particular to an adjustable lens group for selectively allowing imaging light to pass through. Background Art

[0002] Generally speaking, mobile devices such as mobile phones or tablets are mostly equipped with lens groups, such as periscope camera modules. However, although periscope camera modules can achieve a telephoto design by lengthening the lens, they cannot change the focal length. Summary of the invention

[0003] In view of this, an adjustable lens group is provided according to an embodiment, comprising a first lens group, a second lens group, a pump module and a photosensitive element group. The first lens group receives a first imaging light. The second lens group is adjacent to the first lens group and receives a second imaging light. The pump module is located between the first lens group and the second lens group, and selectively allows the first imaging light received from the first lens group to pass or not pass. The pump module comprises a cavity space and an actuator. The cavity space has a first space and a second space adjacent to each other, the first space and the second space are connected by a first channel and a second channel, and the first space and the second space selectively contain or discharge a first medium and a second medium. The actuator is disposed in the first space. When the second space contains the first medium, the actuator applies pressure to the first space, so that the second medium enters the second space through the second channel, and the first medium returns to the first space through the first channel. When the first space contains the second medium, the actuator applies pressure to the first space, so that the first medium enters the second space through the first channel, and the second medium returns to the first space through the second channel. When the second space contains the first medium, the first imaging light cannot pass through the second space. The photosensitive element group is located downstream of the optical path of the pump module and is used for capturing the first imaging light and the second imaging light.

[0004] In some embodiments, the first channel and the second channel are located on the same side where the first space and the second space are connected.

[0005] In some embodiments, the second channel is located at a first side connecting the first space and the second space, and the first channel is located at a second side opposite to the first side.

[0006] In some embodiments, the first channel has a return portion connected to the first space along the periphery of the cavity space.

[0007] In some embodiments, the actuating device includes an actuating element and a piston, the actuating element is disposed at a position corresponding to the first space, the piston is disposed in the first space, and the actuating element drives the piston to apply pressure in the first space.

[0008] In some embodiments, the first lens group includes a first lens and a first prism, the first imaging light enters through the first lens and is reflected to the photosensitive element group through the first prism, and the second lens group includes a second lens and a second prism, the second imaging light enters through the second lens and is reflected to the photosensitive element group through the second prism.

[0009] In some embodiments, the first lens group further includes a first light shield covering the first prism, and the second lens group further includes a second light shield covering the second prism.

[0010] In some embodiments, a focusing lens group is further included, located between the second lens group and the photosensitive element group.

[0011] In some embodiments, the pump module further includes a light-transmitting portion correspondingly disposed in the second space for light to pass through.

[0012] In some embodiments, it further includes a shell and a cover, wherein the first lens group, the second lens group, the pump module and the photosensitive element group are accommodated in the shell, the cover covers the shell and has a first hole and a second hole, the first lens group is arranged corresponding to the first hole, and the second lens group is arranged corresponding to the second hole.

[0013] In summary, the present application provides an adjustable lens group according to one embodiment. When the second space contains the second medium through the actuator, the first imaging light entering from the first lens group passes through the second space, so that the adjustable lens group is in a long-focus mode. When the second space contains the first medium through the actuator, the first imaging light entering from the first lens group cannot pass through the second space, so that the adjustable lens group is in a short-focus mode. In this way, the short-focus and long-focus modes of the adjustable lens group are switched through the pump module to achieve the effect of switching the focal length. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a stereoscopic diagram of an adjustable lens assembly according to a first embodiment;

[0015] Figure 2 is an exploded view of an adjustable lens assembly according to a first embodiment;

[0016] Figure 3A is a cross-sectional view (I) of an adjustable lens assembly according to a first embodiment;

[0017] Figure 3B is a cross-sectional view (II) of an adjustable lens assembly according to a first embodiment;

[0018] Figure 4 is a schematic diagram of a pump module of an adjustable lens assembly according to a first embodiment (I);

[0019] Figure 5 is a schematic diagram of a pump module of an adjustable lens assembly according to a first embodiment (II);

[0020] Figure 6 is a schematic diagram of a pump module of an adjustable lens assembly according to a second embodiment;

[0021] Wherein, the reference numerals are:

[0022] 100: Adjustable lens set

[0023] 110: First lens group

[0024] 111: First Shot

[0025] 112: The First Prism

[0026] 113: First sunshade

[0027] 130: Second lens group

[0028] 131: Second Shot

[0029] 132: Second Prism

[0030] 133: Second sunshade

[0031] 150: Pump module

[0032] 151: Cavity space

[0033] 1511: First Space

[0034] 1512: Second Space

[0035] 1513: First Channel

[0036] 1514: Second Channel

[0037] 152: Actuating device

[0038] 1521: Actuating element

[0039] 1522: Piston

[0040] 153: light-transmitting part

[0041] 160: Shell

[0042] 170: Photosensitive element group

[0043] 180: Cover

[0044] 181: First hole

[0045] 182: Second hole

[0046] 190: Focus lens group

[0047] 251: Cavity space

[0048] 2511: First Space

[0049] 2512: Second Space

[0050] 2512A: First side

[0051] 2512B: Second side

[0052] 2513: First Channel

[0053] 2514: Second channel

[0054] 2515: Reflux

[0055] 252: Actuating device

[0056] A: First Medium

[0057] W: Second Medium

[0058] IL 1: First imaging ray

[0059] IL2: The second imaging ray. DETAILED DESCRIPTION

[0060] See also Figures 1 to 5 . Figure 1 FIG. 4 is a three-dimensional diagram of an adjustable lens assembly according to a first embodiment. Figure 2 FIG. 4 is an exploded view of an adjustable lens assembly according to a first embodiment. Figure 3A FIG. 1 is a cross-sectional view of an adjustable lens assembly according to a first embodiment. FIG. Figure 3B FIG. 2 is a cross-sectional view of an adjustable lens assembly according to a first embodiment. FIG. Figure 4 FIG. 1 is a schematic diagram of a pump module of an adjustable lens assembly according to a first embodiment. FIG. Figure 5 FIG2 is a schematic diagram of a pump module of an adjustable lens assembly according to a first embodiment. An adjustable lens assembly 100 includes a first lens assembly 110, a second lens assembly 130, a pump module 150, and a photosensitive element assembly 170. The adjustable lens assembly 100 can be applied to mobile devices such as mobile phones or tablet computers to adjust the focal length of the lens.

[0061] The first lens group 110 is used for receiving the first imaging light IL1 and guiding the first imaging light IL1 to the photosensitive element group 170 in the adjustable lens group 100 .

[0062] The second lens group 130 is adjacent to the first lens group 110, and is used to receive the second imaging light IL2 and guide the second imaging light IL2 to the photosensitive element group 170 in the adjustable lens group 100. Figure 3A and Figure 3BAs shown, the photosensitive element group 170, the second lens group 130 and the first lens group 110 are arranged in sequence. The second lens group 130 is used as a short-focus lens group, and the first lens group 110 is used as a long-focus lens group.

[0063] See again Figures 1 to 3B The pump module 150 is located between the first lens group 110 and the second lens group 130, and selectively allows the first imaging light IL1 received from the first lens group 110 to pass or not pass. In this way, the short-focus mode and the long-focus mode of the adjustable lens group 100 are switched by the pump module 150.

[0064] See also Figure 4 and Figure 5 The pump module 150 includes a cavity space 151 and an actuator 152. The cavity space 151 has a first space 1511 and a second space 1512 adjacent to each other. The first space 1511 and the second space 1512 are connected by a first channel 1513 and a second channel 1514. The actuator 152 is disposed in the first space 1511. The first space 1511 and the second space 1512 selectively contain or discharge the first medium A and the second medium W. In this embodiment, the first medium A and the second medium W flow between the first space 1511 and the second space 1512. Figure 4 As shown, the first space 1511 contains the second medium W, and the second space 1512 contains the first medium A. The actuator 152 applies downward pressure to the first space 1511 to push the second medium W, so that the second medium W in the first space 1511 can enter the second space 1512 through the second channel 1514. Under the influence of pressure, the first medium A returns to the first space 1511 through the first channel 1513 to form a Figure 5 On the contrary, Figure 5 As shown in FIG. 1 , when the first space 1511 contains the first medium A, the actuator 152 applies pressure upward to the first space 1511 to push the first medium A, so that the first medium A enters the second space 1512 through the first channel 1513, and the second medium W returns to the first space 1511 through the second channel 1514, so as to form a Figure 4 In this way, the first medium A and the second medium W are selectively flowed into the first space 1511 and the second space 1512 by the actuator 152 .

[0065] In this embodiment, the first medium A is, for example, a gas such as air, and the second medium W is, for example, a fluid. Figure 3A and Figure 4As shown in FIG. 1 , when the second space 1512 contains the first medium A, the first imaging light IL1 cannot pass through the second space 1512. Thus, the photosensitive element group 170 only receives the second imaging light IL2 entering from the second lens group 130, and the first imaging light IL1 entering from the first lens group 110 is blocked by the first medium A in the pump module 150 and cannot reach the photosensitive element group 170. In this state, the adjustable lens group 100 is in a short-focus mode. Figure 3B and Figure 5 As shown, when the second space 1512 contains the second medium W, the first imaging light IL1 can pass through the second space 1512. Thus, the photosensitive element group 170 can receive the first imaging light IL1 entering from the first lens group 110. In this state, the adjustable lens group 100 is in telephoto mode.

[0066] The photosensitive element group 170 is located downstream of the optical path of the pump module 150 and is used to capture the first imaging light IL1 and the second imaging light IL2. The photosensitive element group 170 captures the imaging light to form an image of the object or scene to be photographed.

[0067] Specifically, the present application uses the pump module 150 to fill the second space 1512 with the first medium A (i.e., air) so that the first imaging light IL 1 entering from the first lens group 110 cannot pass through the pump module 150, so that the adjustable lens group 100 is in the short-focus mode. When switching to the long-focus mode, the actuator 152 of the pump module 150 applies pressure to the first space 1511, so that the second medium W (i.e., fluid) in the first space 1511 flows to the second space 1512, and the first medium A in the second space 1512 flows to the first space 1511, so that the first imaging light IL 1 can pass through the second space 1512 of the pump module 150, so that the adjustable lens group 100 is in the long-focus mode. Therefore, the present application can switch the short-focus and long-focus modes of the adjustable lens group 100 through the pump module 150 to achieve the effect of switching the focal length.

[0068] In this embodiment, if Figure 4 and Figure 5 As shown, the first channel 1513 and the second channel 1514 are located on the same side where the first space 1511 and the second space 1512 are connected, so that the first medium A and the second medium W flow in and out of the first space 1511 and the second space 1512 under the same side, but the present invention is not limited thereto. Other embodiments of the first channel 1513 and the second channel 1514 will be described in detail later.

[0069] In this embodiment, the actuator 152 includes an actuator element 1521 and a piston 1522. The actuator element 1521 is disposed at a position corresponding to the first space 1511, and the piston 1522 is disposed in the first space 1511. The actuator element 1521 drives the piston 1522 to apply pressure in the first space 1511. In this embodiment, the actuator element 1521 is, for example, a piezoelectric actuator. Figure 4 and Figure 5 As shown, the piston 1522 is driven by the actuating element 1521 to move up and down in the first space 1511 to apply pressure to the first space 1511. Figure 4 As shown, when the piston 1522 moves upward and applies pressure, the first medium A enters the second space 1512 through the first channel 1513, and the second medium W in the second space 1512 enters the first space 1511 through the second channel 1514. Figure 5 As shown, when the piston 1522 moves downward and applies pressure, the second medium W enters the second space 1512 through the second channel 1514 , and the first medium A in the second space 1512 enters the first space 1511 through the first channel 1513 .

[0070] See again Figure 3A and Figure 3B In this embodiment, the first lens group 110 includes a first lens 111 and a first prism 112. The first lens 111 is used as an optical element for the first imaging light IL 1 to pass through, and the first prism 112 is used as an optical element for the first imaging light IL 1 to pass through and reflect. In this way, the first imaging light IL 1 enters through the first lens 111, is reflected by the first prism 112, and then passes through the second prism 132 to reach the photosensitive element group 170. The second lens group 130 includes a second lens 131 and a second prism 132. The second lens 131 is used as an optical element for the second imaging light IL2 to pass through, and the second prism 132 is used as an optical element for the first imaging light IL 1 to pass through and for the second imaging light IL2 to pass through and reflect. In this way, the second imaging light IL2 enters through the second lens 131, and is reflected by the second prism 132 to reach the photosensitive element group 170.

[0071] See again Figure 2 In this embodiment, the first lens group 110 further includes a first light shield 113 covering the first prism 112. The second lens group 130 further includes a second light shield 133 covering the second prism 132. In this way, the first lens group 110 and the second lens group 130 are prevented from being affected by external light, which may reduce the imaging effect.

[0072] In this embodiment, the adjustable lens assembly 100 further includes a focusing lens assembly 190, which is located between the second lens assembly 130 and the photosensitive element assembly 170. The focusing lens assembly 190 is displaced on the optical paths of the first and second imaging light beams IL1 and IL2 to change the focal length of the image capture. In this way, when the first lens assembly 110 and the second lens assembly 130 have different focal lengths, the adjustable lens assembly 100 can have a larger focusing range.

[0073] See again Figure 4 and Figure 5 The pump module 150 further includes a transparent light-transmitting portion 153, which is disposed corresponding to the second space 1512. When the second space 1512 is filled with the second medium W, the first imaging light IL1 can pass through the light-transmitting portion 153 corresponding to the second space 1512, and when the second space 1512 is filled with the first medium A, the first imaging light IL1 cannot pass through the light-transmitting portion 153 corresponding to the second space 1512.

[0074] See again Figure 1 and Figure 2 The adjustable lens assembly 100 further includes a housing 160 and a cover 180. The first lens assembly 110, the second lens assembly 130, the pump module 150 and the photosensitive element assembly 170 are accommodated in the housing 160. The cover 180 covers the housing 160 and has a first hole 181 and a second hole 182. The first lens assembly 110 is disposed corresponding to the first hole 181, and the second lens assembly 130 is disposed corresponding to the second hole 182. In this way, the first lens assembly 110 and the second lens assembly 130 disposed in the first hole 181 and the second hole 182 receive external light.

[0075] For other implementations of the first channel 1513 and the second channel 1514, please refer to Figure 6 . Figure 6 Schematic diagram of a pump module of an adjustable lens assembly according to a second embodiment. In this embodiment, the second space 2512 of the cavity space 251 has a first side 2512A and a second side 2512B opposite to each other. The first space 2511 is connected to the first side 2512A. The second channel 2514 is located at the first side 2512A and connects the first space 2511 and the second space 2512. In addition, the first channel 2513 is located at the second side 2512B. The first channel 2513 has a reflux portion 2515. The reflux portion 2515 is arranged along the periphery of the cavity space 251 and connects the second space 2512 and the first space 2511. In this embodiment, when the actuator 252 applies upward pressure in the first space 2511, the first medium A flows around the periphery of the cavity space 251 through the reflux portion 2515 and enters the second space 2512 from the first channel 2513, while the second medium W in the second space 2512 enters the first space 2511 through the second channel 2514.

[0076] In summary, the present application uses the pump module 150 to fill the second space 1512 with the first medium A so that the first imaging light IL 1 entering from the first lens group 110 cannot pass through the pump module 150, so that the adjustable lens group 100 is in the short-focus mode. When switching to the long-focus mode, the actuator 152 of the pump module 150 applies pressure to the first space 1511, so that the second medium W in the first space 1511 flows to the second space 1512, and the first medium A in the second space 1512 flows to the first space 1511, so that the first imaging light IL 1 can pass through the second space 1512 of the pump module 150, so that the adjustable lens group 100 is in the long-focus mode. Therefore, the present application can switch the short-focus and long-focus modes of the adjustable lens group 100 through the pump module 150 to achieve the effect of switching the focal length.

Claims

1. An adjustable lens assembly, It is characterized by; including: A first lens group receives a first imaging light; a second lens group, adjacent to the first lens group and receiving a second imaging light; a pump module, located between the first mirror group and the second mirror group, selectively allowing the first imaging light received from the first mirror group to pass or not pass, the pump module comprising: A cavity space, comprising a first space and a second space adjacent to each other, wherein the first space and the second space are connected by a first channel and a second channel, and the first space and the second space selectively contain or discharge a first medium and a second medium; and an actuating device disposed in the first space, when the second space contains the first medium, the actuating device applies pressure to the first space, so that the second medium enters the second space through the second channel, and the first medium returns to the first space through the first channel; when the first space contains the second medium, the actuating device applies pressure to the first space, so that the first medium enters the second space through the first channel, and the second medium returns to the first space through the second channel; Wherein, when the second space contains the first medium, the first imaging light cannot pass through the second space; and A photosensitive element group is located downstream of the optical path of the pump module and is used to capture the first imaging light and the second imaging light.

2. The adjustable lens assembly according to claim 1, characterized in that: The first channel and the second channel are located on the same side where the first space and the second space are connected.

3. The adjustable lens assembly according to claim 1, characterized in that: The second channel is located at a first side connecting the first space and the second space, and the first channel is located at a second side opposite to the first side.

4. The adjustable lens assembly as claimed in claim 3, characterized in that: The first channel has a reflux portion connected to the first space along the periphery of the cavity space.

5. The adjustable lens assembly as claimed in claim 1, characterized in that: The actuating device includes an actuating element and a piston. The actuating element is disposed at a position corresponding to the first space, and the piston is disposed in the first space. The actuating element drives the piston to apply pressure in the first space.

6. The adjustable lens assembly as claimed in claim 1, characterized in that: The first lens group includes a first lens and a first prism, the first imaging light enters through the first lens and is reflected to the photosensitive element group through the first prism, and the second lens group includes a second lens and a second prism, the second imaging light enters through the second lens and is reflected to the photosensitive element group through the second prism.

7. The adjustable lens assembly as claimed in claim 6, characterized in that: The first lens group further includes a first light shield covering the first prism, and the second lens group further includes a second light shield covering the second prism.

8. The adjustable lens assembly as claimed in claim 1, characterized in that: It further includes a focusing lens group located between the second lens group and the photosensitive element group.

9. The adjustable lens assembly as claimed in claim 1, characterized in that: The pump module further includes a light-transmitting portion, which is correspondingly disposed at the second space for light to pass through.

10. The adjustable lens assembly according to claim 1, characterized in that: It further includes a shell and a cover, wherein the first lens group, the second lens group, the pump module and the photosensitive element group are accommodated in the shell, the cover covers the shell and has a first hole and a second hole, the first lens group is arranged corresponding to the first hole, and the second lens group is arranged corresponding to the second hole.

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