CN111953895A

CN111953895A - Focusable imaging device

Info

Publication number: CN111953895A
Application number: CN202010706012.1A
Authority: CN
Inventors: 曾正德
Original assignee: Lijing Innovation Co ltd
Current assignee: Luxvisions Innovation Ltd
Priority date: 2019-08-14
Filing date: 2020-07-21
Publication date: 2020-11-17
Anticipated expiration: 2040-07-21
Also published as: TWI728831B; CN111953895B; TW202041913A

Abstract

The invention provides a focusing imaging device, which comprises a lens group and an image sensing assembly. The lens group comprises an anti-vibration assembly and a focusing assembly. The shockproof assembly is provided with an optical axis and comprises a first optical lens group and a driving element, wherein the driving element is used for driving the first optical lens group to move on a plane vertical to the optical axis or rotate by taking the optical axis as a center. The focusing assembly is fixed on the shockproof assembly and comprises a second optical lens group, and the second optical lens group is aligned with the optical axis. The image sensing assembly is fixed at one end of the lens group and aligned with the optical axis.

Description

Focusable imaging device

Technical Field

The invention relates to an imaging device for shooting and recording. And more particularly to a focusable imaging device.

Background

Mobile devices such as mobile phones or tablet phones are mostly configured with a focusing imaging device, and the focusing imaging device can be used for taking pictures or taking pictures. Besides the above devices, the focusing imaging device can also be applied to devices with camera shooting requirements, such as notebook computers, unmanned planes, monitoring systems, displays and cameras.

As consumer demands for the image capturing function of the image capturing apparatus increase, it is expected that the focusable imaging device in the mobile apparatus may have a better imaging effect.

Disclosure of Invention

In view of the foregoing, according to some embodiments of the present invention, a focusing imaging device is provided, which has an anti-shake (OIS) function by means of a plurality of specific lens structures, so as to meet the requirements of higher-specification mobile devices.

According to some embodiments, the present invention provides a focusable imaging device, including a lens group and an image sensing assembly. The lens group comprises an anti-vibration assembly and a focusing assembly. The shockproof assembly is provided with an optical axis and comprises a first optical lens group and a driving element, wherein the driving element is used for driving the first optical lens group to move on a plane vertical to the optical axis or rotate by taking the optical axis as a center. The focusing assembly is fixed on the shockproof assembly and comprises a second optical lens group, and the second optical lens group is aligned with the optical axis. The image sensing assembly is fixed at one end of the lens group and aligned with the optical axis.

According to some embodiments of the present invention, the focusable imaging device further includes a light path changing element disposed at an end of the lens group away from the image sensing element, the light path changing element being configured to change an image capturing direction of the focusable imaging device.

According to some embodiments of the present invention, the optical path changing element is a reflective sheet, and an included angle between the reflective sheet and the image capturing direction is substantially the same as an included angle between the optical axis and the reflective sheet.

According to some embodiments of the present invention, the light path changing element is a prism, and the prism has a light incident surface and a light emitting surface, the light incident surface is perpendicular to the image capturing direction, and the light emitting surface is perpendicular to the optical axis.

According to some embodiments of the present invention, the focusing imaging device further includes an assembly housing, wherein the optical path changing element and the anti-vibration component are disposed in the assembly housing.

According to some embodiments of the present invention, the second optical lens group is a movable optical lens group, and the focusing assembly further includes an actuating element, the movable optical lens group is disposed in the actuating element, and the actuating element is configured to actuate at least one movable optical lens of the movable optical lens group to move along the optical axis.

According to some embodiments of the invention, the second optical lens group is a fixed optical lens group.

According to some embodiments of the invention, the driving element is further configured to drive the first optical lens group to move along the optical axis.

According to some embodiments of the present invention, the focusing assembly further includes an actuating element, a third optical lens group and a frame, the second optical lens group is a movable optical lens group, the movable optical lens group is disposed in the actuating element, the actuating element is used for actuating at least one movable optical lens of the movable optical lens group to move along the optical axis, the third optical lens group is aligned with the optical axis and is a fixed optical lens group, the fixed optical lens group is fixed to the frame, and the frame is fixed to the actuating element.

According to some embodiments of the invention, the size of each lens of the movable optical lens group is smaller than the size of each lens of the fixed optical lens group.

According to some embodiments of the present invention, the movable optical lens group and the fixed optical lens group are disposed in a single housing.

According to some embodiments of the invention, the focusing assembly is located between the anti-shake assembly and the image sensing assembly.

According to some embodiments of the present invention, an anti-vibration assembly is located between the focusing assembly and the image sensing assembly.

According to some embodiments of the present invention, the image sensor assembly includes an image sensor, a filter and a holder, the image sensor and the filter are fixed to the holder, and the filter is used for filtering light rays along an optical axis toward the image sensor.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1A is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 1B is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 1C is a block diagram of a focusable imaging device, according to some embodiments.

FIG. 1D is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 2 is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 3A is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 3B is a schematic diagram of a structure of a focusable imaging device, according to some embodiments.

FIG. 4 is a schematic structural diagram of a focusable imaging device, according to some embodiments.

Wherein, the reference numbers:

200 focusing imaging device

210 focusing assembly

212 group of movable optical lenses

214 fixed optical lens group

216 actuating element

218 frame body

220 shockproof assembly

222 group of anti-vibration optical lenses

226 drive element

227 lens barrel

228 assembly shell

250 image sensing assembly

252 image sensor

254 filter

256 fixing frame

260 circuit board

270 assembly

280 optical path changing element

282 incident light surface

284 the light-emitting surface

286 casing

C imaging direction

C' actual image capturing direction

I image plane

L is the optical axis

Angle of theta

Angle theta

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

various embodiments are described in detail below, however, the embodiments are only used as examples and are not intended to limit the scope of the invention. In addition, the drawings in the embodiments omit some components to clearly show the technical features of the present invention.

Referring to fig. 1A, fig. 1A is a schematic structural diagram of a focusing imaging apparatus 200 according to some embodiments. In some embodiments, the focusing imaging apparatus 200 includes a lens group and an image sensor device 250, the image sensor device 250 is fixed at one end of the lens group, and the lens group and the image sensor device 250 can be aligned along an optical axis L (i.e. the optical axis of the lens group passes through the central region of the image sensor device 250). The shot groups may include at least two groups of shot groupings. The lens groups represent that a plurality of lenses can be divided into different groups based on functions, structures, sizes, weights or other characteristics, the lenses of each group are arranged in the accommodating/fixing structures corresponding to the lenses, and the accommodating/fixing structures can be lens barrels, shells or substrates and the like; or the receiving/securing structure is part of a driving or actuating element such as a motor. In the present embodiment, the lens group includes a focusing element 210 and an anti-vibration element 220. In some embodiments, the anti-shake assembly 220 includes a first optical lens group and the focusing assembly 210 includes a second optical lens group that can be used for focusing. The first optical lens group is an anti-vibration optical lens group which can be used for anti-vibration, and the second optical lens group is a movable optical lens group which can be used for Auto Focus (AF) or a Fixed optical lens group which can be used for Fixed Focus (FF). In some embodiments, the focusing assembly 210 may include two lens groups, such as a second optical lens group and a third optical lens group. Wherein the second optical lens group is a movable optical lens group usable for auto-focusing (AF), and the third optical lens group is a fixed optical lens group usable for Fixed Focusing (FF). The respective optical axes of the lens groups can be aligned with each other, for example, the optical axis of the first optical lens group in the anti-vibration assembly 220 is coincident with the optical axis of the second optical lens group in the focusing assembly 210, and it can be said that the second optical lens group is aligned with the optical axis of the first optical lens group.

In some embodiments, the focusing imaging apparatus 200 can be applied to a device with a camera function, such as a smart phone, a tablet computer, a notebook computer, a display, or a standalone camera or a blank camera. In some embodiments, the anti-shake assembly 220, the focusing assembly 210, and the image sensing assembly 250 are arranged in this order with respect to each other, i.e., the focusing assembly 210 is located between the anti-shake assembly 220 and the image sensing assembly 250. For example, in the embodiment shown in fig. 1A, when the light travels along the image capturing direction C on the optical axis L, the light sequentially passes through the anti-shake element 220 and the focusing element 210 and is projected onto the image sensor 250. In addition, the anti-vibration assembly 220, the focusing assembly 210, and the image sensing assembly 250 are fixed relative to each other. In other embodiments, the focusing assembly 210, the anti-vibration assembly 220 and the image sensing assembly 250 may be arranged in this order, i.e., the anti-vibration assembly 220 is located between the focusing assembly 210 and the image sensing assembly 250. Generally, the optical lens group has a Back Focal Length (BFL) consideration, i.e. the distance from the last lens of the optical lens group to image sensing), while telephoto lenses generally have longer back focal lengths. Therefore, in some embodiments, when the anti-vibration assembly 220 is located between the focusing assembly 210 and the image sensing assembly 250 and the length of the anti-vibration assembly 220 allows, the anti-vibration assembly 220 is disposed by utilizing the space of the back focal length of the focusing assembly 210, thereby achieving better space utilization. However, regardless of the arrangement order of the elements through which the light passes, all light paths are finally imaged on the image sensing element 250 (which is located at the final end of the light path).

The focusing assembly 210 may include a plurality of optical lenses (rear sometimes also referred to as lenses), an actuating element 216, and a frame 218. The optical lens is disposed along the optical axis L to capture an image in an image capturing direction C (which can be regarded as an entering direction of the object light along the optical axis L), and forms an image on the image forming surface I. In the present embodiment, the focusing assembly 210 includes a second optical lens group and a third optical lens group, that is, the plurality of optical lens regions can be divided into the second optical lens group and the third optical lens group, wherein the third optical lens group is a fixed optical lens group 214, and the second optical lens group is a movable optical lens group 212 (note that the number of lenses in each group is not limited to the number shown in fig. 1A). The actuating element 216 is relatively immovable with respect to the frame 218, and in some embodiments, the actuating element 216 is fixed directly to the frame 218. The fixed optical lens group 214 is fixed to the frame 218, and the movable optical lens group 212 is fixed to the actuator 216 and is driven by the actuator 216 to be displaced relative to the fixed optical lens group 214. Specifically, the actuator 216 drives the movable optical lens group 212 to move the movable optical lens group 212 back and forth along the optical axis L, so as to focus and form an object image on the image forming surface I.

In some embodiments, the focusing assembly 210 has only one sleeve-shaped housing (or Barrel). Generally, the lens barrel is provided with only one or more lenses and no actuating element. In this case, the fixed optical lens group 214 is fixed on the inner wall of the lens barrel, which is the frame 218, and the movable optical lens group 212 is movably disposed in the actuating element 216. In some embodiments, the movable optical lens group 212 and the fixed optical lens group 214 are respectively disposed in their corresponding lens barrels, and the lens barrels of the movable optical lens group 212 are disposed in the actuating element 216. In some embodiments, the frame 218 is a lens barrel that houses the fixed optical lens group 214, and the frame 218 and the housing portion of the actuating element 216 are connected to each other.

In some embodiments, the grouping of the optical lenses is performed by grouping the optical lenses with lighter weight into the movable optical lens group 212, so that the requirement of the driving force of the corresponding actuating element 216 can be lower, and the overall size of the actuating element 216 can be reduced. In some embodiments, the sizes (e.g., lens diameters) of the optical lenses in the optical lens set applicable to long focal length (telephoto) are sequentially reduced, so that the optical lenses at the imaging end have smaller weight; at this time, the optical lens near the imaging end can be selected as the movable optical lens group 212, i.e. the movable optical lens group 212 is located between the fixed optical lens group 214 and the imaging surface I, and the weight (or size) of any lens in the movable optical lens group 212 is smaller than the weight (or size) of any lens in the fixed optical lens group 214. In some embodiments, at least one lens of the movable optical lens group 212 has a smaller weight than a lens of the fixed optical lens group 214. It should be understood that the movable optical lens group 212 is selected only by one option, and the optical lens groups can be reversed, i.e., in some embodiments, the optical lens near the image end has a larger weight, or at least one of the movable optical lens group 212 has a larger weight than the lens in the fixed optical lens group 214, or any of the movable optical lens group 212 has a larger weight than any of the fixed optical lens group 214.

Please continue to refer to fig. 1A. The anti-vibration assembly 220 includes a first group of optical lenses and a driving element 226. In the present embodiment, the first optical lens group is the anti-vibration optical lens group 222, the anti-vibration optical lens group 222 is fixed to the driving element 226, and the driving element 226 drives the anti-vibration optical lens group 222 to move. In some embodiments, the driving element 226 can drive the lenses of the anti-shake optical lens group 222 to move in a plane perpendicular to the optical axis L or rotate around the optical axis L. In some embodiments, the anti-shake optical lens group 222 includes a plurality of Wedge-shaped lenses (Wedge Prism, whose lens cross section is trapezoidal), and the driving element 226 drives the anti-shake optical lens group 222 to rotate for shake compensation, i.e., the anti-shake assembly 220 may have OIS function. In the present embodiment, the anti-shake assembly 220 and the focusing assembly 210 are divided into different lens groups. Thus, the driving element 226 and the actuating element 216 respectively correspond to the anti-vibration assembly 220 and the focusing assembly 210, so that the respective structures of the driving element 226 and the actuating element 216 can be simplified.

In the embodiment shown in fig. 1A, the wedge-shaped lenses of the anti-shake optical lens group 222 can change the optical path of the incident light by relative rotation, and compensate for the optical path displacement caused by shake, so that the optical path can be continuously aligned with the optical axis L, thereby achieving the OIS function. In some embodiments, the anti-shake optical lens group 222 includes a lens group capable of changing an optical path, for example, refractive indexes of regions on one or more lenses in the lens group capable of changing an optical path may be different, and the driving element 226 may drive the one or more lenses to translate on a plane orthogonal to the optical axis L or rotate around the optical axis L, so that specific regions of the one or more lenses with different refractive indexes are aligned in the direction of the optical axis L, and the optical path is changed by passing through the regions with different refractive indexes to compensate for optical path displacement caused by vibration, so that the optical path may be continuously aligned with the optical axis L, thereby achieving the OIS function.

The optical Lens may be a Liquid Crystal Lens (Liquid Crystal Lens), a Liquid Lens (Liquid Lens), a T-Lens (T Lens), or the like. The liquid lens may be a spinning liquid lens, a Hydrophobic liquid lens (hydrophthalic liquid lens) or a hydraulic liquid lens (hydraulic liquid lens).

In some embodiments, the anti-shake assembly 220 further includes a sensor for sensing movement or shake of the focusable imaging device 200 and a controller for driving the driving element 226 to perform hand shake compensation according to the movement or shake signal transmitted back by the sensor. In some embodiments, the sensor and controller may be provided as the same component as the anti-rattle assembly 220, and in some embodiments, the sensor and controller are not provided as the same component as the anti-rattle assembly 220. The sensor and the controller may be disposed on a substrate outside the focusable imaging device 200, and electrically connected to the anti-vibration assembly 220 through a circuit and/or a flexible circuit board on the substrate.

Please continue to refer to fig. 1A. The image sensor assembly 250 includes an image sensor 252, a filter 254, and a holder 256. The image sensor 252 is electrically connected to a circuit board (not shown in fig. 1A). In some embodiments, the image sensor 252 and the filter 254 are fixed to a fixing frame 256. In some embodiments, the filter 254 may also be directly fixed on the image sensor 252, for example, the filter 254 may be glued on the image sensor 252. The light of the subject is only required to pass through the filter 254 and then to the image sensor 252.

The filter 254 is used for filtering the light entering the image sensor 252, and specifically, the filter 254 allows the light to be imaged on the image sensor 252 to pass through, and the rest of the light does not pass through. For example, when the focusing imaging apparatus 200 is used to capture a portrait or a landscape, the filter 254 allows visible light to pass (e.g., light with a wavelength of 380 nm to 780 nm) and the rest of the light to not pass. In some embodiments, the Filter 254 may be blue glass, an Infrared Filter (IR Filter), or an Infrared-ultraviolet Filter (UV-IR cut Filter). When the focusing imaging device 200 is applied to an infrared night vision device, the filter 254 may be a filter that allows infrared rays to pass through and does not allow the rest of the light to pass through.

As mentioned above, the anti-vibration assembly 220, the focusing assembly 210, and the image sensing assembly 250 are sequentially arranged and relatively fixed. In the embodiment shown in FIG. 1A, the mounting bracket 256 is secured to the actuating element 216, the actuating element 216 is secured to the frame 218, and the frame 218 is secured to the driving element 226. In some embodiments, the focusing imaging apparatus 200 has a main housing, and the fixing frame 256, the actuating element 216, the frame 218, and the driving element 226 are respectively fixed in the main housing, so that the anti-vibration assembly 220, the focusing assembly 210, and the image sensing assembly 250 are relatively immovable. In some embodiments, the holder 256, the actuating element 216, the frame 218, and the driving element 226 are fixed on the substrate. In some embodiments, the focusing assembly 210 includes only the fixed optical lens group 214, the frame 218 for fixing the optical lens group 214 can be fixed on the substrate, the anti-vibration assembly 220 can be connected to the frame 218, and the anti-vibration assembly 220 can be not fixed on the substrate. In some embodiments, the focusing assembly 210 may include only the movable optical lens group 212, the movable optical lens group 212 is disposed in the actuating element 216, the actuating element 216 may be fixed on the substrate, and the anti-vibration assembly 220 and the image sensing assembly 250 may be connected to the actuating element 216 and may not be fixed on the substrate. In some embodiments, the focusing assembly 210 includes a movable optical lens group 212 and a fixed optical lens group 214, a frame 218 of the fixed optical lens group 214 can be fixed on the substrate, and the anti-vibration assembly 220 and the actuating element 216 can be connected to the frame 218.

The actuating element 216 and the driving element 226 may be a Voice Coil Motor (VCM), a Memory metal Motor (SMA), a piezoelectric Motor (Piezo), or a Stepper Motor (Stepper Motor). Taking the actuator 216 as a voice coil motor as an example, the number of coils in the voice coil motor can be configured as required, so that the movable optical lens group 212 can move along the optical axis L in a single axis for focusing.

In some embodiments, as shown in fig. 1B-1D, the anti-shake assembly 220 may be disposed between the focusing assembly 210 and the image sensing assembly 250. That is, when moving along the image capturing direction C on the optical axis L as shown in fig. 1B, the image is projected onto the image sensor 250 through the focusing element 210 and the anti-vibration element 220 in sequence. The focusing assembly 210, the anti-vibration assembly 220, and the image sensing assembly 250 are still relatively fixed in position with respect to each other when the movable optical lens group 212 moves. For example, the driving element 226 of the anti-vibration assembly 220 may be indirectly fixed to the actuating element 216, and the fixing frame 256 of the image sensing assembly 250 is fixed to the driving element 226. Alternatively, when the focusing assembly 210 has a sleeve-shaped housing (Barrel), such as the fixed optical lens group 214 fixed in the inner wall of the sleeve-shaped housing (e.g., the frame 218), the driving element 226 in the anti-vibration assembly 220 can be fixed to the sleeve-shaped housing (e.g., the frame 218).

In some embodiments, as shown in fig. 1B or fig. 1C, the anti-vibration assembly 220 may be disposed between the focusing assembly 210 and the image sensing assembly 250, and the focusing assembly 210 has the fixed optical lens group 214 and the frame 218, and the movable optical lens group 212 and the actuating element 216. In some embodiments, as shown in FIG. 1B, in the focusing assembly 210, the fixed optical lens group 214 is closer to the image sensing assembly 250 than the movable optical lens group 212. At this point, the drive element 226 in the anti-rattle assembly 220 may be secured to the sleeve-shaped housing (e.g., the frame 218). In other embodiments, as shown in FIG. 1C, in the focusing assembly 210, the fixed optical lens group 214 is farther away from the image sensing assembly 250 than the movable optical lens group 212. At this time, the drive element 226 in the anti-rattle assembly 220 may be secured to the actuating element 216.

In some embodiments, as shown in fig. 1D, the anti-shake assembly 220 may be disposed between the focusing assembly 210 and the image sensing assembly 250, and the focusing assembly 210 only includes the fixed optical lens group 214 and the frame 218, that is, the focusing assembly 210 itself does not have an auto-focusing (AF) function, in which case the driving element 226 of the anti-shake assembly 220 may also drive one or more lenses of the first optical lens group to move along the optical axis L, in other words, the anti-shake assembly 220 has an AF function in addition to the OIS function. Similarly, in some embodiments, the focusing assembly 210 may be disposed between the anti-shake assembly 220 and the image sensing assembly 250, and the focusing assembly 210 includes only the fixed optical lens group 214 and the frame 218, in which case the driving element 226 of the anti-shake assembly 220 can also drive one or more lenses of the first optical lens group to move along the optical axis L to achieve the AF function. However, it should be understood that in some embodiments, when the focusing assembly 210 has the movable optical lens group 212 and the actuating element 216, the driving element 226 of the anti-vibration assembly 220 can still drive one or more lenses of the first optical lens group to move along the optical axis L to cooperate with the movable optical lens group 212. In some embodiments, neither the focusing assembly 210 nor the anti-vibration assembly 220 may have an auto-focus (AF) function, i.e., the focusable imaging apparatus 200 is a Fixed Focus (FF) imaging apparatus having an OIS function.

In some embodiments, the shock-proof assembly 220, the focusing assembly 210, and the image sensing assembly 250 are respectively a single assembly, so that the assembly and disassembly are more convenient; when materials are managed, the management of each component is more flexible.

Therefore, in the embodiments of fig. 1A to 1D, the focusable imaging device 200 can have a telephoto and/or a hand shake prevention function, which can meet the requirements of high-specification mobile devices. Further, the entire weight is reduced by appropriate arrangement of the fixed optical lens group 214 and the movable optical lens group 212, and the tendency of thinning and weight reduction is met.

In some embodiments, the focusing assembly 210 of the focusing imaging apparatus 200 may also only include the movable optical lens group 212 and the actuating element 216 (refer to fig. 3B), so that the overall volume and weight of the focusing imaging apparatus 200 are reduced, and the length along the optical axis L is also shortened, so that the mobile device equipped with the focusing imaging apparatus 200 can meet the requirement of being thinner. When the focusing assembly 210 has a housing, only the movable optical lens group 212 and the actuating element 216 can be disposed in the housing, and no fixed optical lens group 214 is disposed in the housing.

In some embodiments, the focusing assembly 210 of the focusing imaging apparatus 200 may also only include the fixed optical lens group 214, which also reduces the overall weight and meets the requirement of thinning. That is, in some embodiments, when the focusing assembly 210 has a housing, only the fixed optical lens group 214 can be fixed to the housing, and the movable optical lens group 212 and the actuating element 216 are not located in the housing. In this case, the driving element 226 of the anti-shake assembly 220 can also drive one or more lenses of the first optical lens group to move along the optical axis L to achieve the AF function.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a focusing imaging apparatus according to some embodiments. The focusing imaging device 200 includes an image sensing element 250, a lens group including a focusing element 210 and an anti-vibration element 220, and an optical path changing element 280. The optical path changing element 280 is disposed at the other end of the lens group away from the image sensing element 250, and the optical path changing element 280 is used for changing the image capturing direction of the focusable imaging device 200. The optical path changing element 280 can be combined with the focusing imaging apparatus 200 of any of the embodiments. In this embodiment, the optical path changing element 280, the anti-vibration element 220, the focusing element 210, and the image sensing element 250 are sequentially disposed. In some embodiments, the optical path changing element 280, the focusing assembly 210, the anti-vibration assembly 220 and the image sensing assembly 250 may be arranged in sequence, i.e., the anti-vibration assembly 220 is located between the focusing assembly 210 and the image sensing assembly 250.

The optical path changing element 280 is located in the image capturing direction C of the optical lenses, and is used for changing the light traveling along the actual image capturing direction C' to the image capturing direction C. That is, the focusable imaging apparatus 200 may be configured in a periscope type structure, so that the image capturing direction C of the optical lenses does not need to be configured along the thickness direction of the electronic apparatus, which is beneficial for applying the focusable imaging apparatus 200 in a light and thin electronic apparatus. In the present embodiment, the optical path changing element 280 is fixed, and the OIS function can be achieved only by the anti-vibration element 220, so that the structure of the optical path changing element 280 can be further simplified. In other embodiments, the optical path changing element 280 may also be movable to cooperate with the anti-vibration element 220 to generate the OIS function. For example, the optical path altering component 280 and the anti-vibration assembly 220 cooperate to collectively produce OIS functions in different axial directions.

In the embodiment shown in fig. 2, the optical path changing element 280 is a reflective sheet and forms an angle θ with the image capturing direction C. The angle between the image capturing direction C and the reflective sheet and the angle θ ' between the actual image capturing direction C ' and the reflective sheet are substantially the same, so that the light beam coming along the actual image capturing direction C ' can be reflected and changed to the image capturing direction C, and then sequentially passes through the anti-vibration optical lens group 222, the fixed optical lens group 214, the movable optical lens group 212 and the optical filter 254, and is imaged on the image sensor 252.

In some embodiments, the light path changing element 280 is a prism (as shown in fig. 3A and 3B) having a light incident surface 282 and a light emitting surface 284, the light incident surface 282 faces the actual image capturing direction C ', the light emitting surface 284 faces the anti-shake optical lens group 222, and an included angle is formed between the light incident surface 282 and the light emitting surface 284 to change the light traveling along the actual image capturing direction C' to the image capturing direction C. In some embodiments, the light emitting surface 284 is perpendicular to the optical axis L.

Referring to fig. 3A and 3B, fig. 3A and 3B are schematic structural diagrams of a focusable imaging device according to some embodiments. Fig. 3A and 3B show similar embodiments. The focusable imaging device 200 includes an image sensing component 250, a focusing component 210, an anti-shake component 220, and an optical path altering element 280. The focusing assembly 210 includes a movable optical lens group 212 and an actuating element 216. The anti-shake assembly 220 includes an anti-shake optical lens group 222 and a driving element 226. The optical path changing element 280, the anti-vibration element 220, the focusing element 210, and the image sensor 250 are sequentially arranged and fixed.

In the embodiment shown in fig. 3A, the anti-vibration assembly 220 may include a lens barrel 227, the anti-vibration optical lens group 222 is disposed in the lens barrel 227, and the lens barrel 227 may be disposed in the driving element 226. In such embodiments, the actuating element 216 of the focusing assembly 210 can be fixed on the driving element 226. In the embodiment of FIG. 3B, the anti-vibration assembly 220 does not have the lens barrel 227.

In some embodiments, the focusing element 210 and the image sensing element 250 are fixed to each other by an Adhesive (Adhesive). In some embodiments, the adhesive is a two-stage cured adhesive, such as, but not limited to, a first stage that is temporarily fixed by Ultraviolet (UV) radiation to the adhesive; the second stage is fixed by heating and baking to become permanent. With the adhesive, when assembling the focusing assembly 210 and the image sensing assembly 250, an Active Alignment (AA) method can be used to adjust the Alignment between the group of optical lenses of the focusing assembly 210 and the image sensor 252 of the image sensing assembly 250. In addition, in some embodiments, the anti-vibration assembly 220 and the focusing assembly 210 may be fixed to each other by using the two-stage adhesive and active alignment (not shown in fig. 3A and 3B).

In the embodiment shown in fig. 3A, the image sensor 252 is fixed and electrically connected to the circuit board 260, in the embodiment of fig. 3A, the image sensor 252 is electrically connected to the circuit board by wire bonding, the fixing frame 256 is fixed to the circuit board 260, and the filter 254 is fixed to the fixing frame 256. In the embodiment shown in fig. 3B, the image sensor 252 is electrically connected to a circuit board (not shown), and a main plane (back surface) of the image sensor 252 may be attached or bonded (bonded) to the circuit board or may be perpendicular to the circuit board. In some embodiments, the image sensor 252 is attached to the daughter circuit board, and the image sensor 252 and the daughter circuit board are vertically disposed on the main circuit board; alternatively, the image sensor 252 is disposed in a suitable frame that can be vertically disposed on the main circuit board and connected to the main circuit board through a connection line (e.g., a flexible circuit board).

In the embodiment of fig. 3A and 3B, the focusing assembly 210 has only the movable optical lens group 212, so that the overall volume and weight of the focusable imaging device 200 are reduced, and the length along the optical axis L is also shortened, so that the mobile apparatus equipped with the focusable imaging device 200 can meet the demand of being thinner.

In the embodiment of fig. 3A and 3B, the optical path altering component 280 is fixed to the housing 286, and the housing 286 is fixed to the driving component 226 of the anti-vibration assembly 220. Therefore, the position of the optical path changing element 280 is fixed with respect to the driving element 226.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a focusing imaging apparatus 200 according to some embodiments. The focusable imaging device 200 includes an image sensing component 250, a focusing component 210, an anti-shake component 220, and an optical path altering element 280. The anti-vibration component 220 and the optical path changing element 280 are fixed to the assembly housing 228. Specifically, the anti-vibration optical lens group 222 is fixed to the driving element 226, the driving element 226 is fixed to the assembly housing 228, and the optical path changing element 280 is fixed to the assembly housing 228 (for example, as shown in fig. 4, the assembly housing 228 may have a structure matching the shape of one side of the optical path changing element 280, and the optical path changing element 280 is fixed to the structure). Thus, the anti-vibration component 220, the optical path altering component 280 and the assembly housing 228 can now be considered as a single assembly 270. During assembly, the assembly 270 and the focusing element 210 need only be actively aligned. The remaining elements may be similar to the embodiment shown in fig. 3A and will not be described again here.

In summary, the present invention provides a focusing imaging device, which can be assembled easily and/or can have Auto Focus (Auto Focus) and/or anti-shake (OIS) and Telephoto (tele) functions by means of a plurality of specific lens sets, so as to meet the requirements of mobile devices with higher specifications.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A focusable imaging apparatus, comprising:

a lens group comprising:

the shockproof assembly is provided with an optical axis and comprises a first optical lens group and a driving element, wherein the driving element is used for driving the first optical lens group to move on a plane vertical to the optical axis or rotate by taking the optical axis as a center; and

the focusing assembly is fixed on the shockproof assembly and comprises a second optical lens group, and the second optical lens group is aligned with the optical axis; and

the image sensing assembly is fixed at one end of the lens group and aligned with the optical axis.

2. The apparatus of claim 1, further comprising a light path changing element disposed at another end of the lens group away from the image sensor, the light path changing element being configured to change an image capturing direction of the apparatus.

3. The apparatus of claim 2, wherein the optical path changing element is a reflector plate, and an angle between the reflector plate and the image capturing direction is substantially the same as an angle between the optical axis and the reflector plate.

4. The apparatus of claim 2, wherein the optical path changing element is a prism having an incident surface and an exit surface, the incident surface being perpendicular to the image capturing direction, the exit surface being perpendicular to the optical axis.

5. The focusing imaging apparatus of claim 2, further comprising an assembly housing, wherein the optical path changing element and the anti-vibration element are disposed in the assembly housing.

6. The apparatus of claim 1, wherein the second group of optical lenses is a movable group of optical lenses, and the focusing assembly further comprises an actuating element disposed in the actuating element for actuating at least one of the movable optical lenses of the movable group of optical lenses to move along the optical axis.

7. The focusable imaging apparatus of claim 1, wherein the second optical lens group is a fixed optical lens group.

8. The focusing imaging apparatus of claim 7, wherein the driving element is further configured to drive the first group of optical lenses to move along the optical axis.

9. The apparatus of claim 1, wherein the focusing assembly further comprises an actuating element, a third optical lens group and a frame, the second optical lens group is a movable optical lens group, the movable optical lens group is disposed in the actuating element, the actuating element is used to actuate at least one movable optical lens of the movable optical lens group to move along the optical axis, the third optical lens group is aligned with the optical axis and is a fixed optical lens group, the fixed optical lens group is fixed to the frame, and the frame is fixed to the actuating element.

10. The focusable imaging apparatus of claim 9, wherein the size of each lens in the movable optical lens group is smaller than the size of each lens in the fixed optical lens group.

11. The focusable imaging apparatus of claim 9, wherein the movable optical lens group and the fixed optical lens group are disposed in a single housing.

12. The focusing imaging apparatus of claim 1, wherein the focusing element is located between the anti-vibration element and the image sensing element.

13. The focusing imaging apparatus according to claim 1, wherein the anti-vibration element is located between the focusing element and the image sensing element.

14. The apparatus of claim 1, wherein the image sensor assembly comprises an image sensor, a filter and a holder, the image sensor and the filter are fixed to the holder, and the filter is used for filtering light toward the image sensor along the optical axis.