CN216310373U - Lens module with adjustable focal length - Google Patents
Lens module with adjustable focal length Download PDFInfo
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- CN216310373U CN216310373U CN202123190188.5U CN202123190188U CN216310373U CN 216310373 U CN216310373 U CN 216310373U CN 202123190188 U CN202123190188 U CN 202123190188U CN 216310373 U CN216310373 U CN 216310373U
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- motor
- lens
- mirror body
- galvanometer
- photosensitive sheet
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Abstract
The utility model discloses a lens module with an adjustable focal length, which relates to the field of lenses and comprises a lens body, wherein a motor bin is arranged at the rear end of the lens body, a focusing lens is arranged on one side of the motor bin, a galvanometer motor is arranged at the center of the motor bin, a photosensitive sheet is in threaded connection with a motor shaft of the galvanometer, mutually meshed adjusting threads are arranged on the periphery of the photosensitive sheet and the inner wall of a thread groove where the photosensitive sheet is located, an infrared laser ranging probe is arranged on the outer side of the lens body, and a ranging module is arranged in the motor bin. The infrared laser ranging system is provided with the infrared laser ranging probe and the distance measuring and calculating module, so that the distance of a shot object can be quickly identified, the lens is quickly adjusted to be close to the focus through the focus adjusting motor, the position of the photosensitive film is finely adjusted through the galvanometer motor with higher adjusting precision, a shot image is identified through a contrast method and is quickly aligned to the focus, the shot image cannot repeatedly move transversely near the focus, and the use experience of a user is greatly improved.
Description
Technical Field
The utility model relates to the field of lenses, in particular to a lens module with adjustable focal length.
Background
The focal length of the lens is the distance from the optical back principal point of the lens to the focal point, and is an important performance index of the lens, and the length of the focal length of the lens determines the size of the shot image, the size of the field angle, the size of the depth of field and the perspective strength of the picture.
The existing automatic adjustable focal length lens mainly adopts a single distance measurement and focal length adjustment mode, the focal length adjustment speed is low, the focal length adjustment process is not stable enough, the adjustment is performed to the position near the focal point, the focal point can be accurately adjusted to the upper focal point due to the long stroke of the adjusting motor, and the use experience of a user is greatly influenced.
SUMMERY OF THE UTILITY MODEL
Based on this, the present invention provides a lens module with adjustable focal length, which solves the technical problems that the speed of adjusting the focal length of the existing automatic adjustable focal length lens is slow, the process of adjusting the focal length is not stable enough, and the adjustment to the vicinity of the focal point can be performed by fine adjustment in a reciprocating manner before and after the focal point due to a long stroke of an adjusting motor.
In order to achieve the purpose, the utility model provides the following technical scheme: a lens module with adjustable focal length comprises a lens body, wherein a motor bin is arranged at the rear end of the lens body, a focusing motor is arranged on one side of the motor bin, the focusing motor is connected with transmission rods positioned on two sides of the inner wall of the lens body through a transmission belt, the transmission rods are connected with moving platforms in a sliding manner, a focusing lens is arranged between the two moving platforms, a galvanometer motor is arranged at the center of the motor bin, the output end of the galvanometer motor is connected with a galvanometer motor shaft, threads are arranged at the front end of the galvanometer motor shaft after penetrating through the motor bin, the galvanometer motor shaft is in threaded connection with a photosensitive sheet, a photosensitive sheet rotating groove is arranged at the joint of the photosensitive sheet and the galvanometer motor shaft, a thread groove is formed in the back of the lens body, mutually meshed adjusting threads are arranged on the periphery of the photosensitive sheet and the inner wall of the thread groove where the photosensitive sheet is positioned, and an infrared laser ranging probe is arranged on the outer side of the lens body, and a distance measuring module is arranged in the motor bin.
Through adopting above-mentioned technical scheme, set up infrared laser range finding probe and distance measurement module, object distance is shot in discernment that can be quick, make the camera lens adjust near focus fast through focus adjustment motor, the position of the higher mirror motor fine setting sensitization piece of rethread adjustment precision, through the image of shooing of contrast method discernment, aim at the focus fast, make the clear presentation of the image of shooing on the display screen, the condition of sideslip is repeated near focus can not appear in the image, user's use experience has been promoted greatly.
The utility model is further provided that the rear part of the mirror body is provided with mirror body connecting threads.
Through adopting above-mentioned technical scheme, can be with the mirror body connection on camera equipment through mirror body connecting thread.
The utility model is further arranged in such a way that an aperture platform is arranged between the focusing lens and the light-sensitive sheet on the lens body, an adjusting aperture is arranged on the aperture platform, and an aperture adjusting plate is arranged inside the adjusting aperture.
By adopting the technical scheme, the aperture adjusting plate can control the light quantity irradiated on the photosensitive film, thereby controlling the brightness of the photographed finished product.
The utility model is further provided that the front end of the mirror body is provided with a mirror body inlet, and the mirror body inlet is provided with a dustproof sheet.
Through adopting above-mentioned technical scheme, the dustproof sheet can prevent that external dust from getting into the internal portion of mirror.
In summary, the utility model mainly has the following beneficial effects:
according to the utility model, by arranging the infrared laser ranging probe and the distance measuring and calculating module, the distance of a shot object can be rapidly identified, the lens is rapidly adjusted to be close to the focus through the focus adjusting motor, the position of the photosensitive film is finely adjusted through the galvanometer motor with higher adjustment precision, the shot image is identified through a contrast method and is rapidly aligned to the focus, the shot image is clearly displayed on the display screen, the image does not repeatedly move transversely near the focus, and the use experience of a user is greatly improved.
Drawings
FIG. 1 is a side elevational view of the present invention;
FIG. 2 is an enlarged view of A of FIG. 1 in accordance with the present invention;
fig. 3 is an enlarged view of B of fig. 1 according to the present invention.
In the figure: 1. a mirror body; 2. a motor compartment; 3. a focusing motor; 4. a transmission belt; 5. a transmission rod; 6. moving the platform; 7. a focusing mirror; 8. a galvanometer motor; 9. a galvanometer motor shaft; 10. a photosensitive film rotating groove; 11. a photosensitive sheet; 12. a thread groove; 13. adjusting the screw thread; 14. the lens body is connected with a thread; 15. an infrared laser ranging probe; 16. a distance measurement module; 17. an aperture stage; 18. adjusting the aperture; 19. an aperture adjusting plate; 20. a lens body inlet; 21. a dust-proof sheet.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A lens module with adjustable focal length is disclosed, as shown in figure 1-3, comprising a lens body 1, a motor chamber 2 is arranged at the rear end of the lens body 1, a focusing motor 3 is arranged at one side of the motor chamber 2, the focusing motor 3 is connected with a transmission rod 5 positioned at two sides of the inner wall of the lens body 1 through a transmission belt 4, a moving platform 6 is connected on each transmission rod 5 in a sliding way, a focusing mirror 7 is arranged between the two moving platforms 6, the position of the focusing mirror 7 in the lens body 1 is adjusted through the rotation of the focusing motor 3, thereby quickly adjusting the focal length to be near the designated position, a galvanometer motor 8 is arranged at the center of the motor chamber 2, an output end of the galvanometer motor 8 is connected with a galvanometer motor shaft 9, a thread is arranged at the front end of the galvanometer motor shaft 9 through the motor chamber 2, the galvanometer motor shaft 9 is connected with a photosensitive sheet 11 through a thread, a photosensitive sheet rotary slot 10 is arranged at the joint of the photosensitive sheet 11 and the galvanometer motor shaft 9, a thread slot 12 is arranged at the back of the lens body 1 on the photosensitive sheet 11, adjusting threads 13 which are meshed with each other are arranged on the periphery of the photosensitive piece 11 and the inner wall of a thread groove 12 where the photosensitive piece 11 is located, an infrared laser ranging probe 15 is arranged on the outer side of the mirror body 1, a ranging module 16 is arranged in the motor bin 2, and the approximate distance from a shot object to the mirror body 1 can be detected through the infrared laser ranging probe 15.
Referring to fig. 1, a lens inlet 20 is disposed at the front end of the lens 1, and a dust-proof sheet 21 is disposed at the lens inlet 20, wherein the dust-proof sheet 21 can prevent external dust from entering the lens 1.
Referring to fig. 1, a lens body connecting screw 14 is disposed at the rear portion of the lens body 1, a diaphragm table 17 is disposed between the focus adjusting lens 7 and the photosensitive film 11 and is used for connecting the lens body 1 to the image pickup apparatus via the lens body connecting screw 14, an adjusting diaphragm 18 is disposed on the diaphragm table 17, a diaphragm adjusting plate 19 is disposed inside the adjusting diaphragm 18, and the diaphragm adjusting plate 19 can control the amount of light irradiated onto the photosensitive film 11, thereby controlling the brightness of the photographed product.
The working principle of the utility model is as follows: the lens body 1 is connected to the camera equipment through the lens body connecting thread 14, when an object is photographed, the infrared laser ranging probe 15 emits infrared ranging light beams, the operating time of the focusing motor 3 is rapidly calculated through matching with the ranging module 16, the focusing motor 3 rotates, the focusing lens 7 on the moving table is enabled to roughly move to a designated position through the transmission rod 5, when light rays irradiate on the photosensitive sheet 11 through the aperture adjusting plate 19 for adjusting the aperture, the photosensitive sheet 11 judges whether the light rays are focused according to the contrast of images, when adjustment is needed, the galvanometer motor 8 deflects a proper angle, the photosensitive sheet 11 rotates through the thread at the front end of the galvanometer motor shaft 9 matching with the photosensitive sheet rotating groove 10 at the center of the back plate of the photosensitive sheet 11, the photosensitive sheet 11 rotates to enable the photosensitive sheet 11 to slightly move back and forth until the light rays are focused through the adjusting thread 13 in the outer ring of the photosensitive sheet 11 and the thread groove 12, and the mode of fine adjustment of the photosensitive sheet 11 is faster and more stable than the mode of adjusting the focal length through the rotation of the focusing motor 3.
Although embodiments of the present invention have been shown and described, the present embodiments are merely illustrative of the present invention and are not intended to limit the present invention, and the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and those skilled in the art can make modifications, substitutions, variations, etc. of the embodiments as required without departing from the principle and spirit of the present invention, but within the scope of the claims of the present invention.
Claims (4)
1. A lens module with adjustable focal length comprises a lens body (1), and is characterized in that: the rear end of the mirror body (1) is provided with a motor bin (2), one side of the motor bin (2) is provided with a focusing motor (3), the focusing motor (3) is connected with a transmission rod (5) positioned on two sides of the inner wall of the mirror body (1) through a transmission belt (4), the transmission rod (5) is connected with a moving platform (6) in a sliding manner, two groups of focusing mirrors (7) are arranged between the moving platforms (6), the center of the motor bin (2) is provided with a galvanometer motor (8), the output end of the galvanometer motor (8) is connected with a galvanometer motor shaft (9) and penetrates through the motor bin (2) to be provided with threads at the front end of the galvanometer motor shaft (9), the galvanometer motor shaft (9) is in threaded connection with a photosensitive sheet (11), the joint of the photosensitive sheet (11) and the galvanometer motor shaft (9) is a photosensitive sheet rotating groove (10), the mirror body (1) is provided with a threaded groove (12) at the back of the photosensitive sheet (11), the photosensitive film is characterized in that adjusting threads (13) which are meshed with each other are arranged on the periphery of the photosensitive film (11) and the inner wall of a thread groove (12) where the photosensitive film (11) is located, an infrared laser ranging probe (15) is arranged on the outer side of the mirror body (1), and a ranging module (16) is arranged in the motor bin (2).
2. The lens module of claim 1, wherein: the rear part of the mirror body (1) is provided with mirror body connecting threads (14).
3. The lens module of claim 1, wherein: the lens body (1) is provided with an aperture platform (17) between focusing lens (7) and light-sensitive piece (11), be provided with on aperture platform (17) and adjust diaphragm (18), the inside of adjusting diaphragm (18) is provided with diaphragm regulating plate (19).
4. The lens module of claim 1, wherein: the front end of the mirror body (1) is provided with a mirror body inlet (20), and a dustproof sheet (21) is arranged at the mirror body inlet (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123190188.5U CN216310373U (en) | 2021-12-17 | 2021-12-17 | Lens module with adjustable focal length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123190188.5U CN216310373U (en) | 2021-12-17 | 2021-12-17 | Lens module with adjustable focal length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216310373U true CN216310373U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123190188.5U Active CN216310373U (en) | 2021-12-17 | 2021-12-17 | Lens module with adjustable focal length |
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| CN (1) | CN216310373U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115225795A (en) * | 2022-07-18 | 2022-10-21 | 苏州天准科技股份有限公司 | Optical image acquisition device |
-
2021
- 2021-12-17 CN CN202123190188.5U patent/CN216310373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115225795A (en) * | 2022-07-18 | 2022-10-21 | 苏州天准科技股份有限公司 | Optical image acquisition device |
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