CN213122549U - Paraxial camera focusing coupling mechanism - Google Patents
Paraxial camera focusing coupling mechanism Download PDFInfo
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- CN213122549U CN213122549U CN202022301447.6U CN202022301447U CN213122549U CN 213122549 U CN213122549 U CN 213122549U CN 202022301447 U CN202022301447 U CN 202022301447U CN 213122549 U CN213122549 U CN 213122549U
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- ring
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- chute
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Abstract
A paraxial camera focusing coupling mechanism is applied to a lens, and a focusing ring is connected to the lens; the lens is characterized in that the lens is provided with an axial straight groove and also comprises a guide chute ring which is fixedly connected to the focusing ring and is provided with a chute; the movable ring is coaxially arranged with the guide chute ring; the guide nail is arranged at the inclined groove, one end of the guide nail is arranged in the straight groove, and the other end of the guide nail is connected to the movable ring; the guide chute ring, the movable ring, the guide nail, the lens and the focusing ring form an integrated linkage mechanism. The utility model has simple structure, easy manufacture of standard parts and low cost, and can be linked with the prior lens and the focusing ring and coupled with the view finding mechanism of the paraxial camera to realize focusing; and, the utility model discloses independent parameter setting can be carried out, the adaptation can be adjusted alone.
Description
Technical Field
The utility model relates to a camera focusing coupling field, concretely relates to paraxial camera focusing coupling mechanism.
Background
With the development of optical imaging technology, lenses are widely used in various imaging devices such as digital cameras and video cameras. The camera must perform a paraxial focusing operation while in use. At present, because framing and photographing are not the same lens, the paraxial focusing needs to be carried out by applying a come card for linkage distance measurement, the focusing distance of the lens is coupled with a linkage distance measuring device through mechanical coupling, the focusing distance uses a link device to correspond to the offset angle of a small reflector on the distance measuring device, and the focusing distance of the lens is coupled with the distance measuring device by using a triangular distance measuring principle.
However, the focal moving distances of the lenses with different focal lengths are different, so that the focusing coupling device of the lenses with different focal lengths is coupled with the actual forward and backward movement of the lens through the thread ratio, and the focusing distances of the lenses with different focal lengths are ensured to be consistent with the linkage distance measuring device. The coupling has deviation due to mechanical structure and abrasion, so that the coupling has probability of running into focus, although the prior art also has a corresponding adjusting mode, for example, perfect linkage precision is obtained in a mode of one side shaft and one mirror, and the principle of using the macular focusing is the principle, the operation is complex, the requirement on the skill of a user is high, and the applicability is not strong.
Disclosure of Invention
According to the problem that the background art provided, the utility model provides a paraxial camera focusing coupling mechanism solves, and is right next the utility model discloses do further to explain.
A paraxial camera focusing coupling mechanism is applied to a lens, and a focusing ring is connected to the lens; the lens is characterized in that the lens is provided with an axial straight groove and also comprises a guide chute ring which is fixedly connected to the focusing ring and is provided with a chute; the movable ring is coaxially arranged with the guide chute ring; the guide nail is arranged at the inclined groove, one end of the guide nail is arranged in the straight groove, and the other end of the guide nail is connected to the movable ring; the guide chute ring, the movable ring, the guide nail, the lens and the focusing ring form an integrated linkage mechanism.
Preferably, the guide chute ring comprises a wheel part and a shaft part which are connected into a whole, screw fixing grooves are symmetrically formed in the wheel part, screws fixedly connected to the focusing ring are arranged in the fixing grooves, and the guide chute ring is fixedly connected to the focusing ring; the chute is disposed on the shaft portion.
Preferably, the parameters of the chute are designed according to the focusing parameters of the lens and are matched with the lens; the function of focusing the lens with different focusing parameters is realized.
Preferably, the wheel part is provided with a circumferential array of weight reduction grooves, and the transmission load at the joint of each component is reduced by reducing the weight of the whole structure, so that the linkage stability is improved, and the operation feeling is enhanced.
Has the advantages that: compared with the prior art, the utility model has simple structure, easy manufacture of standard parts and low cost, and can be linked with the existing lens and the focusing ring and coupled with the view finding mechanism of the paraxial camera to realize focusing; and, the utility model discloses independent parameter setting can be carried out, the adaptation can be adjusted alone.
Drawings
FIG. 1: the structure of the utility model is shown schematically;
FIG. 2: the utility model is an effect picture after installation;
in the figure: the device comprises a guide oblique groove ring 1, a movable ring 2, a guide nail 3, a lens 4, a focusing ring 5, a wheel part 11, a shaft part 12, a screw fixing groove 13, an oblique groove 14 and a weight reduction groove 15.
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to fig. 1-2.
A paraxial camera focusing coupling mechanism is applied to a lens 4, a focusing ring 5 is connected to the lens 4, and the lens 4 is linked to move in the axial direction by rotating the focusing ring 5; the focusing coupling mechanism of the utility model comprises a guide chute ring 1, a movable ring 2 and a guide nail 3, wherein the guide chute ring 1 comprises a wheel part 11 and a shaft part 12 which are connected into a whole, screw fixing grooves 13 are symmetrically arranged on the wheel part 11, screws fixedly connected on a focusing ring 5 are arranged at the positions of the fixing grooves 13, and further the guide chute ring 1 is fixedly connected on the focusing ring 5 and is linked with the focusing ring 5, and a chute 14 is arranged on the shaft part 12; the movable ring 2 and the axial portion 12 are coaxially arranged, the guide nail 3 is arranged at the inclined groove 14, a straight groove is arranged on the lens 4, one end of the guide nail 3 is arranged in the straight groove and can slide relative to the straight groove, the other end of the guide nail is connected to the movable ring 2, and the guide inclined groove ring 1, the movable ring 2, the guide nail 3, the lens 4 and the focusing ring 5 form an integrated linkage mechanism.
When focusing, rotate focusing ring 5, focusing ring 5 linkage camera lens 4 takes place the displacement in the axial to drive simultaneously rather than the synchronous rotation of fixed connection's direction chute ring 1, and then, the common effect to leading nail 3 of chute 14 and the straight flute on the camera lens 4 on the pivoted direction chute ring 1 is passed through on it, makes to lead nail 3 and slides in the straight flute, and drives movable ring 2 and move in the axial of camera lens, and then focuses.
It is worth explaining that the utility model discloses according to the inconsistent condition of the parameter of focusing of different camera lenses, can carry out parameter design to chute 14 alone to the realization realizes focusing to the camera lens
The wheel part 11 is provided with the weight reduction grooves 15 in a circumferential array, and transmission load at the joint of each part is reduced by reducing the weight of the whole structure, so that the linkage stability is improved, and the operation feeling is enhanced.
The utility model has simple structure, easy manufacture of standard parts and low cost, and can be linked with the prior lens and the focusing ring and coupled with the view finding mechanism of the paraxial camera to realize focusing; and, the utility model discloses independent parameter setting can be carried out, the adaptation can be adjusted alone.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A paraxial camera focusing coupling mechanism is applied to a lens (4), and the lens (4) is connected with a focusing ring (5); the lens is characterized in that an axial straight groove is arranged on the lens (4), and the lens further comprises:
the guide chute ring (1) is fixedly connected to the focusing ring (5) and is provided with a chute (14);
the movable ring (2) is coaxially arranged with the guide chute ring (1);
the guide nail (3) is arranged at the inclined groove (14), one end of the guide nail is arranged in the straight groove, and the other end of the guide nail is connected to the movable ring (2);
the guide chute ring (1), the movable ring (2), the guide nail (3), the lens (4) and the focusing ring (5) form an integrated linkage mechanism.
2. A paraxial camera focus coupling mechanism as claimed in claim 1, wherein:
the guide chute ring (1) comprises a wheel part (11) and a shaft part (12) which are connected into a whole, screw fixing grooves (13) are symmetrically formed in the wheel part (11), screws fixedly connected to the focusing ring (5) are arranged at the positions of the fixing grooves (13), and the guide chute ring (1) is fixedly connected to the focusing ring (5); the chute (14) is disposed on the shaft portion (12).
3. A paraxial camera focus coupling mechanism as claimed in claim 1, wherein:
the parameters of the chute (14) are designed according to the focusing parameters of the lens and are matched with the lens.
4. A paraxial camera focus coupling mechanism as claimed in claim 2, wherein:
and the wheel part (11) is provided with a circumferential array of weight reduction grooves (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022301447.6U CN213122549U (en) | 2020-10-15 | 2020-10-15 | Paraxial camera focusing coupling mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022301447.6U CN213122549U (en) | 2020-10-15 | 2020-10-15 | Paraxial camera focusing coupling mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213122549U true CN213122549U (en) | 2021-05-04 |
Family
ID=75666603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022301447.6U Active CN213122549U (en) | 2020-10-15 | 2020-10-15 | Paraxial camera focusing coupling mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213122549U (en) |
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2020
- 2020-10-15 CN CN202022301447.6U patent/CN213122549U/en active Active
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