CN114594644A

CN114594644A - Electric adjusting device for focal length and aperture of lens

Info

Publication number: CN114594644A
Application number: CN202210316766.5A
Authority: CN
Inventors: 王超; 程文播; 赵勇; 赵婷
Original assignee: Shandong Zhongke Zhizao Medical Instrument Technology Co ltd; Suzhou Institute of Biomedical Engineering and Technology of CAS; Tianjin Guoke Medical Technology Development Co Ltd
Current assignee: Shandong Zhongke Zhizao Medical Instrument Technology Co ltd; Suzhou Institute of Biomedical Engineering and Technology of CAS; Tianjin Guoke Medical Technology Development Co Ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-06-07
Anticipated expiration: 2042-03-29
Also published as: CN114594644B

Abstract

The invention discloses an electric adjusting device for focal length and aperture of a lens, belonging to the technical field of optical imaging, wherein the camera device comprises a lens, the lens comprises a main body, a focal length gear and an aperture gear, the focal length gear can drive the aperture gear to move relative to the main body by rotating relative to the main body, a focusing gear is arranged on a lead screw and meshed with the focal length gear, a first driving piece drives the lead screw to rotate and the focusing gear to rotate, the focusing gear drives the focal length gear to rotate to adjust focal length, a nut slider is arranged on the lead screw, a second driving piece is connected with the nut slider, the aperture adjusting gear is arranged on the second driving piece and meshed with the aperture gear, the nut slider drives the aperture adjusting gear to synchronously move with the aperture gear, the second driving piece drives the aperture adjusting gear to rotate to enable the aperture gear to rotate to adjust aperture size, through the design, the focal length and the aperture size of the lens can be adjusted in a closed chamber, and the operation is simple, the control is accurate, and the photographing efficiency and quality are improved.

Description

Electric adjusting device for focal length and aperture of lens

Technical Field

The invention relates to the technical field of optical imaging, in particular to an electric adjusting device for a focal length and an aperture of a lens.

Background

The zoom lens that uses at present all is equipped with automatic diaphragm control generally, needs to adjust the diaphragm at any time according to the change of focus and the on-the-spot illumination intensity of shooing, the light transmission volume of control camera lens, so can guarantee the stability of shooing image range, be unlikely to produce too bright or too dark picture, nevertheless, under some special environment of shooing, for example in the environment of especially bright or especially dark, automatic diaphragm control system can't play good control effect, generally use the manual size of coming the artificial control diaphragm this time. However, in many cases, the lens is packaged in a sealed chamber inside the device, and it is difficult to manually adjust the focal length and the aperture size of the lens.

Disclosure of Invention

In order to overcome the defects of the prior art, an object of the present invention is to provide an electric adjusting device for adjusting the focal length and aperture of a lens in a closed chamber, which is simple in operation, precise in control, and capable of improving the efficiency and quality of photographing.

One of the purposes of the invention is realized by adopting the following technical scheme:

an electric adjusting device for focal length and aperture of a lens comprises a camera device, wherein the camera device comprises a lens, the lens comprises a main body, a focal length gear and an aperture gear, the focal length gear is opposite to the main body, the aperture gear can be driven to move relative to the main body through rotation, the electric adjusting device for focal length and aperture of the lens further comprises a base and an adjusting structure, the camera device and the adjusting structure are arranged on the base, the adjusting structure comprises a first driving piece, a lead screw, an adjusting component and a focusing gear, the focusing gear is arranged on the lead screw and meshed with the focal length gear, the first driving piece drives the lead screw to rotate and the focusing gear to rotate, the focusing gear drives the focal length gear to rotate and adjust the focal length, the adjusting component comprises a nut slider, a second driving piece and an aperture adjusting gear, the nut slider is arranged on the screw rod, the second driving piece is connected with the nut slider, the aperture adjusting gear is arranged on the second driving piece and meshed with the aperture gear, the nut slider drives the aperture adjusting gear and the aperture gear to move synchronously, and the second driving piece drives the aperture adjusting gear to rotate so that the aperture gear rotates to adjust the aperture size.

Furthermore, the adjusting structure further comprises a transmission assembly, and the first driving piece drives the lead screw to rotate through the transmission assembly.

Further, the output shaft of the first driving piece is parallel to the lead screw.

Further, drive assembly includes driving shaft, action wheel, belt and follows the driving wheel, first driving piece drives the driving shaft rotates, the driving shaft with action wheel fixed connection, follow the driving wheel rotate install in the base, the belt cover is located the action wheel and from between the driving wheel, the lead screw with follow driving wheel fixed connection.

Furthermore, the adjusting assembly further comprises an extension plate, the extension plate is fixed to the nut slider, and the second driving member is fixed to the extension plate.

Further, the extension plate comprises a first plate body and a second plate body, the second plate body is fixed on the nut sliding block, the first plate body is fixedly connected with the second plate body, the second driving piece is fixed on the first plate body, and the first plate body is perpendicular to the second plate body.

Further, the first plate body is L-shaped.

Further, the base includes mounting panel, two connecting plates and bottom plate, two the connecting plate both ends respectively with the mounting panel and bottom plate fixed connection, the mounting panel with the bottom plate is parallel, camera device still includes the camera, the camera lens install in the camera, the camera and first driving piece is fixed in the mounting panel, the lead screw rotate install in the mounting panel and between the bottom plate.

Further, the connecting plate is I-shaped.

Further, the first driving member and the second driving member are both motors.

Compared with the prior art, the lens focal length and aperture electric adjusting device has the advantages that the focusing gear of the lens focal length and aperture electric adjusting device is arranged on the lead screw and meshed with the focusing gear, the first driving piece drives the lead screw to rotate and the focusing gear to rotate, the focusing gear drives the focusing gear to rotate to adjust the focal length, the nut slider is arranged on the lead screw, the second driving piece is connected with the nut slider, the aperture adjusting gear is arranged on the second driving piece and meshed with the aperture gear, the nut slider drives the aperture adjusting gear to synchronously move with the aperture gear, and the second driving piece drives the aperture adjusting gear to rotate so that the aperture gear rotates to adjust the aperture size.

Drawings

FIG. 1 is a perspective view of an electric focal length and aperture adjusting device of a lens of the present invention;

FIG. 2 is a perspective view of the camera device of the electric focal length and aperture adjustment device of the lens of FIG. 1;

FIG. 3 is a perspective view of a base of the lens focus and iris electrical adjustment apparatus of FIG. 1;

FIG. 4 is a partial perspective view of the base of FIG. 3;

FIG. 5 is a perspective view showing an internal structure of the electric focal length and aperture adjusting device of the lens of FIG. 1;

fig. 6 is a perspective view of another internal structure of the electric focal length and aperture adjusting device of fig. 1.

In the figure: 10. a camera device; 11. a camera; 12. a focus gear; 13. an aperture gear; 14. a main body; 20. a base; 21. mounting a plate; 210. a first mounting hole; 211. a second mounting hole; 212. a third mounting hole; 22. a connecting plate; 23. a base plate; 24. a bearing cover plate; 240. a fourth mounting hole; 30. adjusting the structure; 31. a first driving member; 32. a transmission assembly; 320. a drive shaft; 321. a driving wheel; 322. a belt; 323. a driven wheel; 33. a lead screw; 34. an adjustment assembly; 341. a nut slider; 342. an extension plate; 3420. a first plate body; 3421. a second plate body; 343. a second driving member; 344. an aperture adjusting gear; 35. a focusing gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 to 6 show an electric adjusting device for lens focus and aperture according to the present invention, which includes an image capturing device 10, a base 20 and an adjusting structure 30.

The imaging device 10 includes a camera 11 and a lens attached to the camera 11. The lens includes a focus gear 12, a diaphragm gear 13, and a body 14. The focus gear 12 and the aperture gear 13 are rotatably attached to the main body 14. The focus gear 12 is rotatable relative to the main body 14 to adjust the focus of the image pickup apparatus 10. When the focus gear 12 rotates relative to the body 14, the aperture gear 13 moves up and down relative to the body 14.

The base 20 includes a mounting plate 21, two connecting plates 22, a bottom plate 23, and two bearing cover plates 24. The two connection plates 22 are arranged in parallel. Two ends of each connecting plate 22 are fixedly connected with the mounting plate 21 and the bottom plate 23 respectively. The mounting plate 21 is parallel to the bottom plate 23. The two bearing cover plates 24 are fixed to the bottom plate 23, respectively.

The mounting plate 21 is provided with a first mounting hole 210, a second mounting hole 211, and a third mounting hole 212. The first mounting hole 210 is used for mounting the imaging device 10, and the camera 11 of the imaging device 10 is fixed to the mounting plate 21. The second mounting hole 211 is used for mounting the screw 33 so that the screw 33 is rotatably mounted between the mounting plate 21 and the bottom plate 23. The third mounting hole 212 is used for mounting the first driving member 31 so that the first driving member 31 is fixed to the mounting plate 21.

The connecting plate 22 is integrally i-shaped. The i-shaped design of the connecting plate 22 allows the connecting plate 22 to have sufficient installation space without affecting the installation of the adjusting structure 30 while maintaining the structural strength.

Each bearing cover plate 24 is provided with a fourth mounting hole 240, and the fourth mounting hole 240 of one bearing cover plate 24 is used for mounting the driving wheel 321, so that the driving wheel 321 is rotatably mounted on the bearing cover plate 24. The fourth mounting hole 240 of the other bearing cover plate 24 is used for mounting the driven wheel 323, so that the driven wheel 323 is rotatably mounted on the bearing cover plate 24.

The adjustment mechanism 30 includes a first driving member 31, a transmission assembly 32, a lead screw 33, an adjustment assembly 34, and a focus gear 35.

In this embodiment, the first driving member 31 is a motor.

The transmission assembly 32 includes a driving shaft 320, a driving pulley 321, a belt 322, and a driven pulley 323. The primary shaft 320 is connected to the output of the first drive member 31. The primary driver 31 rotates the primary shaft 320. The axle shaft 320 is located between the mounting plate 21 and the base plate 23. The end of the driving shaft 320 is fixedly connected with the driving wheel 321 and drives the driving wheel 321 to rotate relative to the bearing cover plate 24. The driving pulley 321 and the driven pulley 323 are rotatably mounted on the two bearing covers 24, respectively.

The screw 33 is attached to the driven wheel 323, and the driven wheel 323 rotates the screw 33. The lead screw 33 is arranged in parallel with the driving shaft 320, so that the space is saved.

The adjustment assembly 34 is mounted on the lead screw 33 and moves up and down as the lead screw 33 rotates, in synchronization with the aperture gear 13. Specifically, the adjusting assembly 34 includes a nut block 341, an extension plate 342, a second driving member 343, and a diaphragm adjusting gear 344. The nut runner 341 is attached to the screw shaft 33 and moves up and down in cooperation with the screw shaft 33 as the screw shaft 33 rotates. The extension plate 342 is fixed to the nut runner 341. Specifically, the extension plate 342 includes a first plate 3420 and a second plate 3421. The second plate 3421 is fixed to the nut block 341, and the first plate 3420 is fixed to the second plate 3421. The second driving member 343 is fixed to the bottom of the first plate 3420. The first plate body 3420 is perpendicular to the second plate body 3421. The second plate 3421 is L-shaped. The aperture adjustment gear 344 is mounted on the output portion of the second driving member 343, and the second driving member 343 drives the aperture adjustment gear 344 to rotate. Specifically, the second driving member 343 is a motor. The aperture gear 344 is engaged with the aperture gear 13, and when the aperture gear 344 rotates, the aperture gear 13 is driven to rotate, so as to adjust the aperture size of the image pickup apparatus 10.

A focus gear 35 is mounted to the lead screw 33 and engaged with the focus gear 12. The focus gear 35 rotates to drive the focus gear 12 to rotate to adjust the focus of the image pickup apparatus 10.

When the lens focus and aperture electric adjustment device is assembled, the camera 11 of the image pickup device 10 is fixed to the mounting plate 21, and the image pickup device 10 is fixed to the base 20. The adjustment structure 30 is aligned with the base 20. The aperture adjustment gear 344 meshes with the aperture gear 13, and the focus gear 35 meshes with the focus gear 12.

When the lens focus and aperture electric adjusting apparatus is used, the first driving member 31 drives the driving shaft 320 to rotate. The driving shaft 320 drives the driving wheel 321 to rotate relative to the bearing cover plate 24, the driving wheel 321 drives the driven wheel 323 to rotate through the belt 322, and the driven wheel 323 drives the screw 33 to rotate. The lead screw 33 drives the focusing gear 35 to rotate, and when the focusing gear 35 rotates, the focusing gear 12 is driven to rotate to adjust the focus of the image pickup device 10. Since the focus gear 12 rotates relative to the camera 11, the aperture gear 13 moves up and down relative to the camera 11. Therefore, when the screw 33 rotates, the nut block 341 moves up and down with the rotation of the screw 33, thereby moving the aperture adjustment gear 344 up and down to maintain the engagement with the aperture gear 13. When the aperture size needs to be further adjusted, the second driving member 343 drives the aperture adjustment gear 344 to rotate, thereby driving the aperture gear 13 to rotate, and adjusting the aperture size of the image pickup apparatus 10.

The utility model provides a camera lens focus and the electronic adjusting device of light ring can realize the size of adjustment camera lens focus and light ring in airtight cavity, and easy operation, and control is accurate, improves the efficiency and the quality of shooing.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, variations and modifications can be made without departing from the spirit of the invention, and all equivalent modifications and changes can be made to the above embodiments according to the essential technology of the invention, which falls into the protection scope of the invention.

Claims

1. The utility model provides an electronic adjusting device of camera lens focus and diaphragm, includes camera device, camera device includes the camera lens, the camera lens includes main part, focus gear and iris gear, the focus gear is relative the main part rotation can drive iris gear is relative the main part removes its characterized in that: the lens focal length and aperture electric adjusting device further comprises a base and an adjusting structure, the camera device and the adjusting structure are mounted on the base, the adjusting structure comprises a first driving piece, a lead screw, an adjusting component and a focusing gear, the focusing gear is mounted on the lead screw and meshed with the focal length gear, the first driving piece drives the lead screw to rotate and the focusing gear to rotate, the focusing gear drives the focal length gear to rotate and adjust focal length, the adjusting component comprises a nut slider, a second driving piece and an aperture adjusting gear, the nut slider is mounted on the lead screw, the second driving piece is connected with the nut slider, the aperture adjusting gear is mounted on the second driving piece and meshed with the aperture gear, the nut slider drives the aperture adjusting gear and the aperture gear to move synchronously, the second driving piece drives the aperture adjusting gear to rotate so that the aperture gear rotates to adjust the size of the aperture.

2. The device for electrically adjusting the focal length and aperture of a lens according to claim 1, wherein: the adjusting structure further comprises a transmission assembly, and the first driving piece drives the lead screw to rotate through the transmission assembly.

3. The device for electrically adjusting the focal length and aperture of a lens according to claim 2, wherein: the output shaft of the first driving piece is parallel to the lead screw.

4. The device for electrically adjusting the focal length and the aperture of a lens according to claim 2, wherein: the transmission assembly comprises a driving shaft, a driving wheel, a belt and a driven wheel, the first driving piece drives the driving shaft to rotate, the driving shaft is fixedly connected with the driving wheel, the driven wheel is rotatably installed on the base, the belt sleeve is arranged on the driving wheel and between the driven wheels, and the lead screw is fixedly connected with the driven wheel.

5. The device for electrically adjusting the focal length and aperture of a lens according to claim 1, wherein: the adjusting assembly further comprises an extension plate, the extension plate is fixed to the nut sliding block, and the second driving piece is fixed to the extension plate.

6. The device for electrically adjusting the focal length and aperture of a lens according to claim 5, wherein: the extension plate comprises a first plate body and a second plate body, the second plate body is fixed on the nut sliding block, the first plate body is fixedly connected with the second plate body, the second driving piece is fixed on the first plate body, and the first plate body is perpendicular to the second plate body.

7. The device for electrically adjusting the focal length and aperture of a lens according to claim 6, wherein: the first plate body is L-shaped.

8. The device for electrically adjusting the focal length and aperture of a lens according to claim 1, wherein: the base includes mounting panel, two connecting plates and bottom plate, two the connecting plate both ends respectively with the mounting panel and bottom plate fixed connection, the mounting panel with the bottom plate is parallel, camera device still includes the camera, the camera lens install in the camera, the camera with first driving piece is fixed in the mounting panel, the lead screw rotate install in the mounting panel and between the bottom plate.

9. The device for electrically adjusting the focal length and aperture of a lens according to claim 8, wherein: the connecting plate is I-shaped.

10. The device for electrically adjusting the focal length and aperture of a lens according to claim 1, wherein: the first driving piece and the second driving piece are both motors.