CN218332126U - Optical lens with switchable field of view - Google Patents

Abstract

The utility model provides a changeable optical lens of visual field, it includes first lens subassembly, the second lens subassembly, main lens subassembly, adjust circle and adjust knob, wherein this first lens subassembly includes a first lens cone, at least one first lens and at least one first follower pin, this second lens subassembly includes a second lens cone, at least one second lens and a second follower pin, this main lens subassembly includes a main lens cone and at least one main lens, this regulation circle forms an operation chamber, wherein this first lens of this first lens subassembly is set up at this first lens cone, this first follower pin outwards extends from this first lens cone, this second lens of this second lens subassembly is set up at this second lens cone, this second follower pin outwards extends from this second lens cone, this main lens is set up at this main lens cone, wherein this second lens cone of this second lens subassembly extends to this adjust knob outwards from this second lens cone.

Description

Optical lens with switchable field of view

Technical Field

The utility model relates to a technical field that makes a video recording especially relates to a changeable optical lens of visual field.

Background

With the continuous development of imaging technology, the application range of the dual-field lens is wider and wider. For example, the dual-field optical lens with the functions of ordinary optical imaging and infrared thermal imaging is very convenient for wild animal observation, outdoor search and rescue and the like.

However, market switching and focusing of dual field lenses also has certain difficulties. The main reason is that the dual-field lens often has a plurality of optical lenses for switching between different fields of view, and meets the focusing requirement while switching the field of view.

The utility model patent application No. 202220237376.4 discloses an (optical) lens with switchable field of view, which allows a user to move a first adjustable lens barrel through its focusing ring to switch the field of view and to adjust a second adjustable lens barrel through its adjusting knob to realize focusing of the lens. The utility model discloses an optical lens that the patent provided can realize independent visual field switching and focus, has solved two visual fields and has switched and focus the problem that produces mutual interference easily. However, the lens of the present invention has many drawbacks: first, when a user moves the first adjustable barrel through the focus ring, the first adjustable barrel rotates, so that the lens mounted on the first adjustable barrel also rotates, which is not favorable for maintaining optical performance and affects optical consistency after long-time use. Secondly, the second adjustable lens barrel needs an independent movement space, so that the whole lens is too long and inconvenient to use. Finally, the operation ends of the focusing ring and the knob are fully exposed, and the error touch is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model has the advantages of the utility model provides a changeable optical lens of visual field, wherein the utility model discloses changeable optical lens of visual field when the visual field is switched, its lens can not take place to rotate.

Another advantage of the present invention is to provide a field-of-view switchable optical lens, wherein the lens of the field-of-view switchable optical lens can not rotate during focusing adjustment.

Another advantage of the present invention is to provide a field-of-view switchable optical lens, wherein the utility model discloses field-of-view switchable optical lens's structure is compacter and convenient to use person uses.

Another advantage of the present invention is to provide a switchable optical lens of field of view, wherein the exposed portion of the switchable optical lens of field of view is less to avoid the error to touch.

Another advantage of the present invention is to provide a switchable optical lens of field of view, wherein the utility model discloses the operation end of the knob of the switchable optical lens of field of view is hidden to avoid the mistake to touch.

Other objects and features of the present invention will become more fully apparent from the following detailed description and appended claims, taken in conjunction with the accompanying drawings, wherein like reference characters refer to like parts throughout the several views.

Correspondingly, according to the utility model discloses, have at least one aforementioned advantage the utility model discloses changeable optical lens in visual field includes:

a first lens assembly;

a second lens assembly;

a main lens assembly;

an adjusting ring; and

an adjusting knob, wherein the first lens assembly comprises a first barrel, at least one first lens and at least one first follower pin, the second lens assembly comprises a second barrel, at least one second lens and a second follower pin, the master lens assembly comprises a master barrel and at least one master lens, the adjusting ring forms an operation cavity, wherein the first lens of the first lens assembly is arranged in the first barrel, the first follower pin extends outwards from the first barrel, the second lens of the second lens assembly is arranged in the second barrel, the second follower pin extends outwards from the second barrel, the master lens is arranged in the master barrel, wherein the second follower pin of the second lens assembly extends outwards from the second barrel to the adjusting knob, wherein the master lens assembly is arranged in the operation cavity of the adjusting ring, the second lens barrel of the second lens group is arranged in the operation cavity of the adjusting ring, wherein the main lens barrel of the main lens assembly forms an accommodating cavity and at least one first limiting groove, the inner wall of the adjusting ring forms a first driving groove, the first lens barrel of the first lens assembly is arranged in the accommodating cavity of the main lens barrel, the first driven pin of the first lens assembly penetrates out of the first limiting groove respectively to be meshed with the first driving groove of the inner wall of the adjusting ring, optical axes of the first lens, the second lens and the main lens are arranged to be coincident, the first limiting groove is a through groove and is parallel to the optical axis, the first driving groove of the adjusting ring extends towards the direction close to the first limiting groove, and the first driving groove is arc-shaped.

Further, the adjusting knob is disposed on a side wall of the adjusting ring, wherein the side wall of the adjusting ring forms a second limiting groove, wherein an extending direction of the second limiting groove is parallel to optical axes of the first lens, the second lens and the main lens, wherein the second follower pin of the second lens component extends outward from the second lens barrel and penetrates out of the second limiting groove of the side wall of the adjusting ring and is further connected to the adjusting knob, wherein the adjusting knob is configured to be able to drive the second lens barrel to move along the second limiting groove through the second follower pin of the second lens component.

Further, the adjusting knob comprises a driving member, wherein the driving member comprises a driving end and an operating end extending from the driving end, wherein the driving end forms a second driving groove, the second driving groove is arranged to extend along an involute, and the second driving groove is arranged to face the second limiting groove of the adjusting ring, so that the second driven pin of the second lens assembly can pass through the second limiting groove of the adjusting ring and be engaged with the second driving groove.

Further, the main barrel further forms a guiding groove, wherein the second barrel of the second lens assembly is disposed in the accommodating cavity of the main barrel, wherein the guiding groove is a through groove, wherein the second follower pin of the second lens assembly extends from the second barrel and sequentially penetrates out of the guiding groove of the main barrel and the second limiting groove of the adjusting ring, and is engaged with the second driving groove of the driving end, wherein the width of the guiding groove is not less than the length of the second limiting groove of the adjusting ring, and the second limiting groove of the adjusting ring is disposed opposite to the guiding groove of the main barrel.

Further, the length of the guiding groove of the main barrel is not less than the length of the first limiting groove of the main barrel of the main lens assembly.

Further, the first barrel of the first lens assembly is disposed between the second barrel of the second lens assembly and the main lens of the main lens assembly.

Further, the first barrel of the first lens assembly and the second barrel of the second lens assembly are separately disposed in the accommodating cavity of the main barrel.

Further, one end of the first follower pin is fixed to the first barrel, and the other end is engaged in the first driving groove; one end of the second follower pin is fixed to the second barrel, and the other end is engaged in the second driving groove.

Further, the main barrel includes a mounting portion, a first forming portion and a second forming portion, wherein the first forming portion extends between the mounting portion and the second forming portion, and the first limiting groove is formed in the first forming portion, the guiding groove is formed in the second forming portion, the main lens is disposed in the mounting portion, the first barrel is surrounded by the first forming portion, and the second barrel is surrounded by the second forming portion.

Further, the adjusting knob further comprises a protective cover, wherein the protective cover is freely rotatably arranged at the top end of the operating end of the driving member relative to the operating end of the driving member.

The lens barrel further comprises a protective shell, wherein the protective shell forms a protective cavity, the protective cavity is provided with an installation opening and an operation opening, one end of the protective shell where the installation opening is located can be fixed on the main lens barrel of the main lens assembly, and the adjusting ring is suitable for being arranged in the protective cavity of the protective shell.

The above and other advantages of the invention will be more fully apparent from the following description and drawings.

The above and other advantages and features of the invention will be more fully apparent from the following detailed description of the invention and the accompanying drawings.

Drawings

Fig. 1 is a perspective view of an optical lens with switchable field of view according to an embodiment of the present invention.

Fig. 2 is an assembly view of an optical lens with switchable viewing fields according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of a field-of-view switchable optical lens according to an embodiment of the present invention.

Fig. 4 is a perspective view of a main lens barrel of a main lens group of an optical lens with switchable field of view according to an embodiment of the present invention.

Fig. 5 is a perspective view of an adjustment ring of an optical lens with switchable field of view according to an embodiment of the present invention.

Fig. 6 is a perspective view of an adjusting knob of an optical lens with switchable field of view according to an embodiment of the present invention.

Fig. 7 is a perspective view of a driving end of a driving member of an adjusting knob of an optical lens with switchable field of view according to an embodiment of the present invention.

Fig. 8 is an assembly view of an alternative implementation of a field-of-view switchable optical lens in accordance with an embodiment of the present invention.

Detailed Description

The following description is provided to enable any person skilled in the art to practice the invention. Other obvious substitutions, modifications and variations will occur to those skilled in the art. Accordingly, the scope of protection of the present invention should not be limited by the exemplary embodiments described herein.

It will be understood by those of ordinary skill in the art that, unless specifically indicated herein, the terms "a" and "an" should be interpreted as meaning that "at least one" or "one or more" may mean that, in one embodiment, one element may be present in one number, and in another embodiment, the element may be present in multiple numbers.

It will be understood by those of ordinary skill in the art that unless otherwise specified herein, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positions illustrated in the drawings for convenience in describing the present invention, and do not indicate or imply that the devices or elements involved must have a particular orientation or position. Accordingly, the above terms should not be construed as limiting the present invention.

Referring to fig. 1 to 7 of the drawings, a field-of-view switchable optical lens according to an embodiment of the present invention includes a first lens assembly 10, a second lens assembly 20, a main lens assembly 30, an adjustment ring 40 and an adjustment knob 50, wherein the first lens assembly 10 includes a first barrel 11, at least one first lens 12 and at least one first follower pin 13, the second lens assembly 20 includes a second barrel 21, at least one second lens 22 and a second follower pin 23, the main lens assembly 30 includes a main barrel 31 and at least one main lens 32, the adjustment ring 40 forms an operation cavity 401, wherein the first lens 12 of the first lens assembly 10 is disposed in the first barrel 11, the first follower pin 13 extends outward from the first barrel 11, the second lens 22 of the second lens assembly 20 is disposed in the second barrel 21, the second follower pin 23 extends outwards from the second barrel 21, the main lens 32 is disposed on the main barrel 31, wherein the second follower pin 23 of the second lens assembly 20 extends outwards from the second barrel 21 to the adjusting knob 50, wherein the main lens assembly 30 is disposed in the operating cavity 401 of the adjusting ring 40, the second barrel 21 of the second lens assembly 20 is disposed in the operating cavity 401 of the adjusting ring 40, wherein the main barrel 31 of the main lens assembly 30 forms an accommodating cavity 310 and at least one first limiting groove 3120, the inner wall 41 of the adjusting ring 40 forms a first driving groove 402, wherein the first barrel 11 of the first lens assembly 10 is disposed in the accommodating cavity 300 of the main barrel 31, and the first follower pins 13 of the first lens assembly 10 respectively protrude out of the first limiting grooves 3120 to engage with the first driving groove 402 of the inner wall 41 of the adjusting ring 40, the optical axes of the first lens element 12, the second lens element 22 and the main lens element 32 are disposed to coincide with each other, wherein the first limiting groove 3120 is a through groove, the first limiting groove 3120 is parallel to the optical axis, the first driving groove 402 of the adjusting ring 40 extends toward the first limiting groove 3120, and the first driving groove 402 is arc-shaped. Preferably, the first lens assembly 10 has two first follower pins 13, and the adjustment collar 40 defines two first drive slots 402. More preferably, the two first follower pins 13 are mirror images of each other. Preferably, one end of the first follower pin 13 is fixed to the first barrel 11, and the other end is engaged in the first driving groove 402.

As shown in fig. 1 to 7 of the drawings, the adjusting knob 50 of the field-of-view switchable optical lens according to the embodiment of the present invention is disposed on the side wall 42 of the adjusting ring 40, wherein the side wall 42 of the adjusting ring 40 forms a second limiting groove 420, wherein the second follower pin 23 of the second lens component 20 extends outward from the second barrel 21 and penetrates out of the second limiting groove 420 of the side wall 42 of the adjusting ring 40 and is further connected to the adjusting knob 50, wherein the adjusting knob 50 is disposed to be able to drive the second barrel 21 to move along the second limiting groove 420 through the second follower pin 23 of the second lens component 20. Preferably, the extending direction of the second limiting groove 420 of the side wall 42 of the adjusting ring 40 is parallel to the optical axis of the first lens 12, the second lens 22 and the main lens 32.

As shown in fig. 1 to 7 of the drawings, correspondingly, when a user needs to adjust the distance between the first lens 12 of the first lens assembly 10 and the main lens 32 of the main lens assembly 30 to adjust the multiple (if yes) of the field-of-view switchable optical lens of the present invention, the user can rotate the adjusting ring 40 to drive the first follower pin 13 through the first driving groove 402 of the inner wall 41 of the adjusting ring 40, so as to drive the first barrel 11 of the first lens assembly 10 to move along the extending direction of the first limiting groove 3120 and further to synchronously move the first lens 11 disposed on the first barrel 11. Further, since the first limiting groove 3120 is disposed parallel to the optical axes of the first lens 12, the second lens 22 and the main lens 32, the first lens assembly 10 is driven to move linearly relative to the main barrel 31, thereby preventing the first lens assembly 10 from rotating relative to the main barrel 31. At this time, since the second follower pin 23 of the second lens assembly 20 extends outward from the second barrel 21 and penetrates out of and connects to the adjusting knob 50 from the second limiting groove 420 of the side wall 42 of the adjusting ring 40, and has no direct physical connection relationship with the first lens assembly 10, when the adjusting ring 40 rotates, the second lens assembly 20 and the adjusting knob 50 rotate synchronously with the adjusting ring 40, and as long as the adjusting knob 50 is not rotated, the position of the second lens assembly 20 is kept inconvenient. It can be understood that the clockwise or counterclockwise rotation of the adjusting ring 40 relative to the main lens assembly 30 can respectively drive the first barrel 11 of the first lens assembly 10 to move linearly along the first limiting groove 3120 in a direction away from the adjusting ring 40 or in a direction close to the adjusting ring 40, so as to achieve corresponding functions, such as zooming.

As shown in fig. 1 to 7 of the drawings, correspondingly, when a user needs to adjust the distance between the second lens 22 of the second lens assembly 20 and the first lens 12 of the first lens assembly 10 to focus (if yes) the field switchable optical lens of the present invention, the user can rotate the adjusting knob 50 to drive the second follower pin 23 through the adjusting knob 50, so as to drive the second barrel 11 of the second lens assembly 20 to move along the extending direction of the second limiting groove 420 and further to synchronously move the second lens 22 disposed on the second barrel 21. Further, since the second limiting groove 420 is disposed parallel to the optical axes of the first lens 12, the second lens 22 and the main lens 32, the two lens assemblies 20 are driven to move linearly relative to the main barrel 31 (or the adjusting ring 40), so as to prevent the second lens assembly 20 from rotating relative to the main barrel 31. At this time, since the first follower pins 13 of the first lens assembly 10 respectively protrude from the first limiting grooves 3120 and engage with the first driving grooves 402 of the inner wall 41 of the adjusting ring 40, the position of the first lens assembly 10 can be kept unchanged as long as the adjusting ring 40 does not rotate. It can be understood that the clockwise or counterclockwise rotation of the adjusting knob 50 relative to the adjusting ring 40 can respectively drive the second barrel 21 of the second lens assembly 20 to move linearly along the second limiting groove 420 in a direction away from the first lens assembly 10 or in a direction close to the first lens assembly 10, so as to implement corresponding functions, such as focusing.

Notably, the second lens assembly 20 and the first lens assembly 10 of the field switchable optical lens of the present invention are disposed in a spaced apart and non-direct physical connection relationship. Thus, the positions of the second lens assembly 20 and the first lens assembly 10 can be adjusted independently and without interfering with each other.

As shown in fig. 1 to 7 of the drawings, the adjusting knob 50 of the field-switchable optical lens according to the embodiment of the present invention includes a driving member 51, wherein the driving member 51 includes a driving end 511 and an operating end 512 extending from the driving end 511, wherein the driving end 511 forms a second driving groove 5110, wherein the second driving groove 5110 is configured to extend along an involute curve, and the second driving groove 5110 is configured to face the second limiting groove 420 of the side wall 42 of the adjusting ring 40, so that the second driven pin 23 of the second lens component 20 can be engaged with the second driving groove 5110 after passing through the second limiting groove 420 of the side wall 42 of the adjusting ring 40. Accordingly, when a user needs to adjust the distance between the second lens assembly 20 and the first lens assembly 10, the adjustment knob 50 can be rotated. In addition, since the second driving groove 5110 is arranged along an involute curve, the user is allowed to finely adjust the distance between the second lens assembly 20 and the first lens assembly 10 to achieve the corresponding function, such as focusing. Preferably, one end of the second follower pin 23 is fixed to the second barrel 21, and the other end is engaged in the second driving groove 5110.

As shown in fig. 1 to 7 of the drawings, the main barrel 31 of the main lens assembly 30 of the field-switchable optical lens according to the embodiment of the present invention further forms a guide groove 3130, wherein the second barrel 21 of the second lens assembly 20 is disposed in the accommodating cavity 310 of the main barrel 31, wherein the guide groove 3130 is a through groove, and the guide groove 3130 has a proper width (length extending along the lateral direction of the main barrel 31) and length (length extending along the longitudinal direction of the main barrel 31), wherein the second driven pin 23 of the second lens assembly 20 extends from the second barrel 21 and sequentially passes through the guide groove 3130 of the main barrel 31 and the second limiting groove 420 of the side wall 42 of the adjusting ring 40, and is engaged with the second driving groove 5110 of the driving end 511. Further, the width of the guiding groove 3130 is not less than the length of the second limiting groove 420 of the side wall 42 of the adjusting ring 40, so as to ensure the movement of the second follower pin 23 of the second lens assembly 20 along the second limiting groove 420. Preferably, the second limiting groove 420 of the side wall 42 of the adjusting ring 40 is disposed opposite to the guide groove 3130 of the main barrel 31. It can be understood that the second lens component 20 and the first lens component 10 of the field switchable optical lens of the present invention are integrated in the main lens barrel 31 of the main lens component 30, so that the length (or volume) of the field switchable optical lens is smaller, the structure is more compact, the structure exposed outside the adjusting ring 40 is less, and the appearance is more beautiful. Further, the length of the guide groove 3130 of the main barrel 31 of the main lens assembly 30 is not less than the length of the first limit groove 3120 of the main barrel 31 of the main lens assembly 30, so as to ensure the rotation distance of the adjustment ring 40 and the forward and backward movement of the first follower pin 13 of the first lens assembly 10 along the first limit groove 3120.

As shown in fig. 1 to 7 of the drawings, the first barrel 11 of the first lens assembly 10 of the field-of-view switchable optical lens according to the embodiment of the present invention is disposed between the second barrel 21 of the second lens assembly 20 and the main lens 32 of the main lens assembly 30. Further, the main barrel 31 of the main lens assembly 30 includes a mounting portion 311, a first forming portion 312 and a second forming portion 313, wherein the first forming portion 312 extends between the mounting portion 311 and the second forming portion 313, the first limiting groove 3120 is formed at the first forming portion 312, the guide groove 3130 is formed at the second forming portion 313, the main lens 32 is disposed at the mounting portion 311, the first barrel 11 is surrounded by the first forming portion 312, and the second barrel 21 is surrounded by the second forming portion 313. Preferably, the first barrel 11 of the first lens assembly 10 and the second barrel 21 of the second lens assembly 20 are separately disposed in the accommodating cavity 310 of the main barrel.

As shown in fig. 1 to 7 of the drawings, the adjusting knob 50 of the field-of-view switchable optical lens according to the embodiment of the present invention further includes a protective cover 52, wherein the protective cover 52 is disposed at the top end of the operation end 512 of the driving member 51 in a manner of being freely rotatable relative to the operation end 512 of the driving member 51, so that only a portion of the operation end 512 of the driving member 51 is exposed, thereby preventing the operation end 512 of the driving member 51 from being touched by mistake.

As shown in fig. 1 to 7 of the drawings, the optical lens with switchable field of view according to the embodiment of the present invention further includes a protective shell 60, wherein the protective shell 60 forms a protective cavity 600, wherein the protective cavity 600 has an installation opening 601 and an operation opening 602, wherein the installation opening 601 of the protective shell 60 is located at an end that can be fixed to the main barrel 31 of the main lens assembly 30, and the adjusting ring 40 is suitable to be disposed in the protective cavity 600 of the protective shell 60. Accordingly, the adjustment ring 40 is partially exposed through the operation opening 602 to facilitate the operation of the user and reduce the erroneous touch of the adjustment ring 40.

As shown in fig. 1 to 7 of the drawings, the optical lens with switchable field of view according to the embodiment of the present invention further includes a fixing base 70, wherein one end of the mounting opening 601 of the protective shell 60 is fixed to the main barrel 31 of the main lens assembly 30, and the other end is suitable for being fixed to the fixing base 70. It will be appreciated that the mounting block 70 is adapted to be secured to an imager. It will be appreciated that the imager is illustratively an infrared thermal imager having an infrared field of view.

Fig. 8 of the drawings shows an alternative implementation of a field-of-view switchable optical lens according to an embodiment of the present invention, which includes a first lens assembly 10, a second lens assembly 20A, a main lens assembly 30, an adjustment ring 40 and an adjustment knob 50, wherein the first lens assembly 10 includes a first barrel 11, at least one first lens 12 and at least one first follower pin 13, the second lens assembly 20A includes a second barrel 21A, at least one second lens 22A and a second follower pin 23A, the main lens assembly 30 includes a main barrel 31 and at least one main lens 32, the adjustment ring 40 forms an operation cavity 401, wherein the first lens 12 of the first lens assembly 10 is disposed in the first barrel 11, the first follower pin 13 extends outward from the first barrel 11, the second lens 22A of the second lens assembly 20A is disposed in the second barrel 21A, the second follower pin 23A extends outward from the second barrel 21A, the main lens 32 is disposed on the main barrel 31, wherein the second follower pin 23A of the second lens assembly 20A extends outward from the second barrel 21A to the adjusting knob 50, wherein the main lens assembly 30 is disposed in the operation cavity 401 of the adjusting ring 40, the second barrel 21A of the second lens assembly 20A is disposed in the operation cavity 401 of the adjusting ring 40, wherein the main barrel 31 of the main lens assembly 30 forms an accommodating cavity 310 and at least one first limiting groove 3120, the inner wall 41 of the adjusting ring 40 forms a first driving groove 402, wherein the first barrel 11 of the first lens assembly 10 is disposed in the accommodating cavity 300 of the main barrel 31, and the first follower pins 13 of the first lens assembly 10 respectively protrude from the first limiting grooves 3120, so as to engage with the first driving groove 402 of the inner wall 41 of the adjusting ring 40, wherein the optical axes of the first lens 12, the second lens 22A and the main lens 32 are disposed to coincide, wherein the first limiting groove 3120 is a through groove, and the first limiting groove 3120 is parallel to the optical axis, the first driving groove 402 of the adjusting ring 40 extends in a direction close to the first limiting groove 3120, and the first driving groove 402 is arc-shaped. Preferably, the first lens assembly 10 has two first follower pins 13, and the adjustment collar 40 defines two first drive slots 402. More preferably, the two first follower pins 13 are mirror images of each other. Preferably, one end of the first follower pin 13 is fixed to the first barrel 11, and the other end is engaged in the first driving groove 402.

As shown in fig. 8 of the drawings, the main barrel 31 of the main lens assembly 30 of the alternative implementation of the field-of-view switchable optical lens according to the embodiment of the present invention further forms a guiding groove 3130, the guiding groove 3130 is a through groove, wherein the second barrel 21A of the second lens assembly 20A includes a cylinder 211A, a connecting pin 212A and a driving ring 213A, the cylinder 211A is disposed in the accommodating cavity 310 of the main barrel 31, the driving ring 213A is rotatably sleeved on the main barrel 31, the connecting pin 212A passes through the guiding groove 3130, two ends of the connecting pin 212A are respectively fixed on the cylinder 211A and the driving ring 213A, the second lens 22A is disposed on the cylinder 211A, and the second driven pin 23A extends outward from the driving ring 213A of the second barrel 21A and penetrates out of the second limiting groove 420 of the adjusting ring 40 and further engages with the second driving groove 5110 of the driving groove 511. Further, the guide groove 3130 has an appropriate width (length extending in the lateral direction of the main barrel 31) and length (length extending in the longitudinal direction of the main barrel 31). Preferably, the width of the guide groove 3130 is not less than the length of the second limit groove 420 of the adjusting ring 40, and the second limit groove 420 of the adjusting ring 40 is disposed opposite to the guide groove 3130 of the main barrel 31. Further, the cylinder body 211A of the second barrel 21A of the second lens assembly 20A is disposed in the accommodating cavity 310 of the main barrel 31, and the second follower pin 23A of the second lens assembly 20A extends from the driving ring 213A of the second barrel 21A and sequentially passes through the guide groove 3130 of the main barrel 31 and the second limiting groove 420 of the side wall 42 of the adjusting ring 40, and is engaged with the second driving groove 5110 of the driving end 511. Further, the width of the guiding groove 3130 is not less than the length of the second limiting groove 420 of the side wall 42 of the adjusting ring 40, so as to ensure the movement of the second follower pin 23 of the second lens assembly 20 along the second limiting groove 420. It can be understood that the second lens component 20A and the first lens component 10 of the field switchable optical lens of the present invention are integrated in the main lens barrel 31 of the main lens component 30, so that the length (or volume) of the field switchable optical lens is smaller, the structure is more compact, the structure exposed outside the adjusting ring 40 is less, and the appearance is more beautiful. Further, the length of the guide groove 3130 of the main barrel 31 of the main lens assembly 30 is not less than the length of the first driving groove 402 of the main barrel 31 of the main lens assembly 30, so as to ensure the rotation distance of the adjusting ring 40 and the forward and backward movement of the first follower pin 13 of the first lens assembly 10 along the first limit groove 3120.

As shown in fig. 8 of the drawings, other components or elements of the alternative implementation of the optical lens with switchable field of view according to the embodiment of the present invention are substantially the same as the corresponding components or elements of the optical lens with switchable field of view according to the present invention shown in fig. 1 to 7 of the drawings.

It is noted that the terms "first" and/or "second" herein are used merely to name and distinguish between different components (or elements) of the invention, and do not have a meaning that is sequential or quantitative in nature.

It is to be understood by one of ordinary skill in the art that the embodiments described above and shown in the drawings are for purposes of illustration only and are not intended to be limiting. All equivalent implementations, modifications and improvements within the spirit of the invention are intended to be included within the scope of the invention.

Claims (18)

1. A field switchable optical lens, comprising:

a first lens assembly;

a second lens assembly;

a main lens assembly;

an adjusting ring; and

an adjusting knob, wherein the first lens assembly comprises a first barrel, at least one first lens and at least one first follower pin, the second lens assembly comprises a second barrel, at least one second lens and a second follower pin, the master lens assembly comprises a master barrel and at least one master lens, the adjusting ring forms an operation cavity, wherein the first lens of the first lens assembly is arranged in the first barrel, the first follower pin extends outwards from the first barrel, the second lens of the second lens assembly is arranged in the second barrel, the second follower pin extends outwards from the second barrel, the master lens is arranged in the master barrel, wherein the second follower pin of the second lens assembly extends outwards from the second barrel to the adjusting knob, wherein the master lens assembly is arranged in the operation cavity of the adjusting ring, the second lens barrel of the second lens group is arranged in the operation cavity of the adjusting ring, wherein the main lens barrel of the main lens assembly forms an accommodating cavity and at least one first limiting groove, the inner wall of the adjusting ring forms a first driving groove, the first lens barrel of the first lens assembly is arranged in the accommodating cavity of the main lens barrel, the first driven pin of the first lens assembly penetrates out of the first limiting groove respectively to be meshed with the first driving groove of the inner wall of the adjusting ring, optical axes of the first lens, the second lens and the main lens are arranged to be coincident, the first limiting groove is a through groove and is parallel to the optical axis, the first driving groove of the adjusting ring extends towards the direction close to the first limiting groove, and the first driving groove is arc-shaped.

2. The switchable-field-of-view optical lens of claim 1, wherein the adjusting knob is disposed on a sidewall of the adjusting ring, wherein the sidewall of the adjusting ring forms a second limiting groove, wherein an extending direction of the second limiting groove is parallel to an optical axis of the first lens, the second lens and the main lens, wherein the second follower pin of the second lens component extends outward from the second barrel and out of the second limiting groove of the sidewall of the adjusting ring and is further connected to the adjusting knob, and wherein the adjusting knob is configured to drive the second barrel to move along the second limiting groove via the second follower pin of the second lens component.

3. The switchable field of view optical lens of claim 2, wherein the adjustment knob comprises a driving member, wherein the driving member comprises a driving end and an operating end extending from the driving end, wherein the driving end forms a second driving groove, wherein the second driving groove is configured to extend along an involute, and the second driving groove is configured to face the second limiting groove of the adjustment ring, such that the second follower pin of the second lens assembly can pass through the second limiting groove of the adjustment ring and engage with the second driving groove.

4. The switchable-field-of-view optical lens of claim 3, wherein the main barrel further forms a guiding groove, wherein the second barrel of the second lens assembly is disposed in the accommodating cavity of the main barrel, wherein the guiding groove is a through groove, wherein the second follower pin of the second lens assembly extends from the second barrel and sequentially penetrates out of the guiding groove of the main barrel and the second limiting groove of the adjusting ring, and is engaged with the second driving groove of the driving end, wherein the width of the guiding groove is not less than the length of the second limiting groove of the adjusting ring, and the second limiting groove of the adjusting ring is disposed opposite to the guiding groove of the main barrel.

5. The field-of-view switchable optical lens of claim 4, wherein the length of the guiding groove of the main barrel is not less than the length of the first limiting groove of the main barrel of the main lens assembly.

6. The field switchable optical lens of claim 4, wherein the first barrel of the first lens assembly is disposed between the second barrel of the second lens assembly and the main lens of the main lens assembly.

7. The field switchable optical lens of claim 6, wherein the first barrel of the first lens assembly and the second barrel of the second lens assembly are disposed in the receiving cavity of the main barrel at a distance.

8. The field-of-view switchable optical lens of claim 4, wherein the first follower pin is fixed at one end to the first barrel and at the other end engages the first driving groove; one end of the second follower pin is fixed to the second barrel, and the other end is engaged in the second driving groove.

9. The field of view switchable optical lens of claim 4, wherein the first lens assembly has two first follower pins and the adjustment collar defines two first drive slots.

10. The field-of-view switchable optical lens of claim 4, wherein the main barrel comprises a mounting portion, a first forming portion and a second forming portion, wherein the first forming portion extends between the mounting portion and the second forming portion, the first limiting groove is formed in the first forming portion, the guiding groove is formed in the second forming portion, the main lens is disposed in the mounting portion, the first barrel is surrounded by the first forming portion, and the second barrel is surrounded by the second forming portion.

11. The switchable field of optical lens of any of claims 3-10, wherein the adjustment knob further comprises a protective cover, wherein the protective cover is disposed at a top end of the actuating member in a manner that the protective cover is freely rotatable with respect to the actuating end of the actuating member.

12. The field switchable optical lens of any one of claims 1-10, further comprising a protective shell, wherein the protective shell forms a protective cavity, wherein the protective cavity has an installation opening and an operation opening, wherein the installation opening of the protective shell is located at an end that can be fixed to the main barrel of the main lens assembly, and the adjustment ring is adapted to be disposed in the protective cavity of the protective shell.

13. The switchable optical lens of claim 2, wherein the main barrel further forms a guiding groove, the guiding groove is a through groove, wherein the second barrel of the second lens assembly includes a barrel, a connecting pin and a driving ring, the barrel is disposed in the accommodating cavity of the main barrel, the driving ring is rotatably sleeved on the main barrel, the connecting pin passes through the guiding groove, and two ends of the connecting pin are respectively fixed to the barrel and the driving ring, the second lens is disposed in the barrel, the second driven pin extends outward from the driving ring of the second barrel and penetrates out from the second limiting groove of the adjusting ring and further engages with the second driving groove of the driving end, wherein the width of the guiding groove is not less than the length of the second limiting groove of the adjusting ring, and the second limiting groove of the adjusting ring is disposed opposite to the guiding groove of the main barrel.

14. The field-of-view switchable optical lens of claim 13, wherein the length of the guiding groove of the main barrel is not less than the length of the first limiting groove of the main barrel of the main lens assembly.

15. The field switchable optical lens of claim 13, wherein the first barrel of the first lens assembly is disposed between the barrel of the second lens assembly and the main lens of the main lens assembly.

16. The switchable field of view optical lens of claim 15, wherein the first barrel of the first lens assembly and the barrel of the second lens assembly are disposed in the receiving cavity of the main barrel in a spaced apart relationship.

17. The field switchable optical lens of claim 13, wherein one end of the first follower pin is fixed to the first barrel and the other end is engaged in the first driving groove; one end of the second follower pin is fixed to the driving ring of the second barrel, and the other end is engaged in the second driving groove.

18. The field switchable optical lens of claim 13, wherein the length of the guide groove is not less than the length of the first drive groove.

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