Tube lens for semi-open optical path

Abstract

The utility model discloses a tube lens for a semi-open type light path, which comprises a shell and a lens arranged in the shell, and the shell comprises an upper cover and a lower cover which are detachable in the radial direction; when the upper cover and the lower cover are separated, the lens can be separated from any one; the lens is installed in the clamping ring, and the clamping ring can axially move in the shell. The clamping ring is in threaded connection with the interior of the shell; the shell is provided with a plurality of axial long-strip-shaped through holes in the moving path of the clamping ring; the device not only can finely adjust the position of the lens, but also can quickly perform long-distance adjustment.

Description

Technical Field

[0001] The utility model relates to a semi-open optical path, in particular to a tube lens used in a semi-open optical path. Background Art

[0002] A semi-open optical path system means that the system has an open interface, which can be connected to the light source or detection module through an adapter. A tube mirror is used to connect the light source in the semi-open optical path system. The tube mirror is provided with a lens, which is normally clamped in a retaining ring. The retaining ring is threaded in the tube mirror, and the position of the lens is fine-tuned by rotation. This method is convenient and reliable for adjustment over small distances, but it is more troublesome when the lens needs to be adjusted over a large distance. It can only be fine-tuned to the specified position slowly by rotating the retaining ring, which is inefficient and inconvenient to use. Summary of the Invention

[0003] Purpose of the utility model: The purpose of the utility model is to provide a tube lens with a semi-open optical path that can both fine-tune the lens position and quickly adjust long distances.

[0004] Technical solution: The tube lens for a semi-open optical path described in the utility model includes a shell and a lens arranged therein, and the shell includes an upper cover and a lower cover that can be separated in the radial direction; when the upper cover and the lower cover are separated, the lens can be separated from either one of them.

[0005] Based on the above technical solution, the shell is divided into a radially detachable upper cover and a lower cover. When the two covers are separated, the lens can be separated from either cover. In this way, when the lens needs to be adjusted over a long distance, the two covers can be separated, and then the lens can be directly taken out and placed in the specified position, and then the two covers can be buckled together, which greatly speeds up the adjustment efficiency.

[0006] Preferably, the lens is mounted in a retaining ring, and the retaining ring can move axially in the housing.

[0007] The clamping ring can move axially inside the tube mirror, which can drive the lens to move and adjust its position.

[0008] Preferably, the clamping ring is threadedly connected in the housing.

[0009] The retaining ring is threadedly connected to the housing, and the position of the retaining ring, that is, the lens, can be fine-tuned by rotating it.

[0010] Preferably, the housing is provided with a plurality of axially long strip-shaped through holes on the movement path of the snap ring.

[0011] An axially long strip through hole is provided on the housing to facilitate confirmation of the position of the lens, and the position can also be adjusted by rotating the retaining ring through the through hole.

[0012] Preferably, there are two through holes, which are symmetrically arranged on both sides of the shell.

[0013] Two through holes are symmetrically arranged on both sides of the shell to facilitate the rotation of the snap ring by fingers.

[0014] The housing is provided with scales along the movement path of the snap ring.

[0015] The housing is provided with a scale on the moving path of the snap ring to facilitate positioning of the snap ring, that is, the position of the lens, and to facilitate adjustment of the lens position.

[0016] Preferably, the upper cover and the lower cover have the same size.

[0017] The upper cover and the lower cover are the same size, that is, the shell is divided into two parts in half, so that the separation of the lens from either cover is smoother. Because one cover is slightly larger in size, that is, the radial cross-section is slightly larger than the semicircle, although the lens can be barely separated from it, the separation will be hindered, and long-term separation of the two will cause wear and tear, resulting in unstable subsequent connection.

[0018] Preferably, the upper cover and the lower cover are bolted to each other.

[0019] Bolting facilitates assembly and disassembly.

[0020] Preferably, an interface for connecting to external equipment is provided at the end of the shell.

[0021] An interface is provided at the end of the shell to facilitate connection with external equipment.

[0022] Preferably, different shells can be spliced ​​together.

[0023] Different shells can be connected to each other to extend the overall length of the tube mirror as needed.

[0024] Beneficial effect: Compared with the prior art, the present invention has the following beneficial effects: by dividing the shell into a radially detachable upper cover and a lower cover, when the lens needs to be adjusted over a long distance, the shell can be directly separated and the lens can be taken out and placed at a specified position on the shell, thereby improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the overall structure of the device;

[0026] Figure 2 This is a schematic diagram of the structure of the device without the upper cover and interfaces;

[0027] Figure 3 This is a schematic diagram of the structure of the device when performing position calibration. DETAILED DESCRIPTION

[0028] As shown in the figures, all the drawings show the state of two shells 1 being spliced ​​together, but do not show the connecting piece used for splicing; Figure 3 In order to better illustrate the baffle 7 , it is separated from the lens 2 . In practice, when measuring distance using the laser rangefinder 6 , the baffle 7 should be in contact with the lens 2 .

[0029] The utility model discloses a tube lens for a semi-open optical path, comprising a housing 1 and a lens 2 arranged therein, wherein the housing 1 comprises an upper cover 1-1 and a lower cover 1-2 which are detachable in the radial direction; when the upper cover 1-1 and the lower cover 1-2 are separated, the lens 2 can be separated from either one of them.

[0030] The housing 1 is divided into two halves, namely an upper cover 1-1 and a lower cover 1-2. Of course, it can also be unequally divided, with one of them being slightly larger, but it must be ensured that when the upper and lower covers are separated, the lens 2 can be separated from either of them and will not be stuck in the middle and cannot be separated.

[0031] The lens 2 is clamped in the clamping ring 3. An axial channel is provided in the housing 1. The inner wall of the channel is provided with an internal thread. The clamping ring 3 is provided with an external thread matching the internal thread. The rotation of the clamping ring 3 can drive the lens 2 to move axially in the housing 1.

[0032] The shell 1 is symmetrically provided with axial long strip through holes 4 on both sides in the moving direction of the snap ring 3. The two through holes 4 can be respectively provided on the upper cover 1-1 and the lower cover 1-2, or a single through hole 4 can be provided on only one cover, or a through hole 4 can be provided at the connection between the two covers, that is, the same through hole 4 has part on both covers; the shell 1 is provided with scales along the moving path of the snap ring 3, and the scales can be provided on either of the upper and lower covers, and can be provided on the edge of the through hole 4; scales can also be provided on the opposite surfaces of the upper and lower covers, so that they can be used as a reference when making long-distance position adjustments.

[0033] The upper cover 1-1 and the lower cover 1-2 are provided with matching bolt holes or threaded holes, which are bolted or screwed; the end of the shell 1 can be provided with an interface 5 for connecting to an external device, which can be provided only at one end or at both ends; different shells 1 can also be spliced ​​with each other, for example, multiple shells 1 are spliced ​​with each other, and the shells 1 at both ends are only provided with an interface 5 at one end, and the shell 1 in the middle is not provided with an interface 5 at both ends, and then the two adjacent shells 1 are connected by a connecting piece, and the connecting piece is provided with a hole matching the bolt hole or threaded hole on the shell 1, and the bolt or screw passes through the hole and then into the corresponding hole in the shell 1 to complete the splicing of adjacent shells 1; other splicing methods can also be used.

[0034] When the upper and lower covers are removed to move the lens 2, a laser rangefinder can be used to quickly and accurately move the lens 2 to a predetermined position. The laser rangefinder 6 can be fixed at one end of the housing 1, and a baffle 7 is set close to the lens 2 for distance measurement. When the distance between the baffle 7 and the laser rangefinder 6 reaches a preset value, the baffle 7 can be removed, the upper and lower covers can be fastened, and the distance adjustment is completed. If fine-tuning is required, the snap ring 3 can be dialed from the through hole 4 for adjustment.

Claims

1. A tube lens for a semi-open optical path, comprising a housing (1) and a lens (2) disposed therein, characterized in that: The housing (1) comprises an upper cover (1-1) and a lower cover (1-2) which are detachable in the radial direction; when the upper cover (1-1) and the lower cover (1-2) are separated, the lens (2) can be separated from either of them.

2. The tube lens for a semi-open optical path according to claim 1, characterized in that: The lens (2) is mounted in a clamping ring (3), and the clamping ring (3) is capable of axial movement in the housing (1).

3. The tube lens for a semi-open optical path according to claim 2, characterized in that: The clamping ring (3) is threadedly connected in the housing (1).

4. The tube lens for a semi-open optical path according to claim 2, characterized in that: The housing (1) is provided with a plurality of axially long strip-shaped through holes (4) on the path where the clamping ring (3) moves.

5. The tube lens for a semi-open optical path according to claim 4, characterized in that: There are two through holes (4), which are symmetrically arranged on both sides of the housing (1).

6. The tube lens for a semi-open optical path according to claim 2, characterized in that: The housing (1) is provided with scales along the movement path of the clamping ring (3).

7. The tube lens for a semi-open optical path according to claim 1, characterized in that: The upper cover (1-1) and the lower cover (1-2) have the same size.

8. The tube lens for a semi-open optical path according to claim 1, characterized in that: The upper cover (1-1) and the lower cover (1-2) are bolted to each other.

9. The tube lens for a semi-open optical path according to claim 1, characterized in that: An interface (5) for connecting to external equipment is provided at the end of the housing (1).

10. The tube lens for a semi-open optical path according to claim 1, characterized in that: Different shells (1) can be spliced ​​together.

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