Optical fiber rapid locking device with high repeated positioning precision

Abstract

The utility model discloses an optical fiber rapid locking device with high repeated positioning precision. The device is composed of a lens sleeve, a pressing plate, a corrugated spring, an optical fiber adjusting seat clamping ring, an optical fiber adjusting seat and an optical fiber, is used in an optical path with high alignment precision, can achieve high-precision repeated positioning, rapid locking and rapid dismounting of an optical fiber head, and is compact and high in engineering practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fibers, and in particular relates to an optical fiber quick locking device with high repeated positioning accuracy. Technical Background

[0002] With the development of science and technology, optical fiber is increasingly used in precision photoelectric detection equipment. When optical fiber is non-contact aligned in free space, some occasions require high consistency in the parallelism between the incident light beam and the receiving light beam. However, after repeated disassembly and assembly, the positioning accuracy of the optical fiber head decreases, and the adjustment is troublesome and inefficient. Therefore, a device with high repeatability and positioning accuracy and fast disassembly and locking is urgently needed. Summary of the invention

[0003] The purpose of the present invention is to provide an optical fiber quick locking device with high repeat positioning accuracy, which is composed of a mirror sleeve, a pressure plate, a corrugated spring, an optical fiber adjustment seat clamp, an optical fiber adjustment seat and an optical fiber. It is used in an optical path with high alignment accuracy, so that the optical fiber head can be quickly disassembled and locked and can be repeatedly positioned with high precision in milliradian levels.

[0004] The technical solution of the present invention is:

[0005] An optical fiber quick locking device with high repeat positioning accuracy, comprising a lens sleeve, a pressure plate, a corrugated spring, an optical fiber adjustment seat clamp, an optical fiber adjustment seat and an optical fiber, characterized in that:

[0006] The corrugated spring is installed inside the optical fiber adjustment seat clamping ring through a pressure plate. The optical fiber adjustment seat fixes the optical fiber head. The optical fiber adjustment seat is fastened to the rear part of the optical fiber adjustment seat clamping ring through screws. The optical fiber adjustment seat clamping ring is rotated to be inserted into the mirror sleeve. The small bosses evenly distributed on the cylindrical surface of the mirror sleeve enter the grooves at the corresponding positions on the cylindrical surface of the optical fiber adjustment seat clamping ring. At the same time, the corrugated spring is compressed. When it is screwed in to the end point, the small bosses are pushed into the end of the groove under the reaction force of the corrugated spring.

[0007] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that: a plurality of small bosses are evenly distributed on the cylindrical surface of the lens sleeve, and the outer diameter A of the cylindrical surface where the small bosses are located is sized to match the inner diameter B of the cylindrical surface of the optical fiber adjustment seat clamp ring.

[0008] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that the pressing plate is in a circular ring shape, with holes punched on the ring surface and lugs extending around it to press the corrugated spring.

[0009] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that the outer diameter of the corrugated spring is smaller than the inner diameter B of the cylindrical surface of the optical fiber adjustment seat clamp ring, and the width W of the spring leaf is equivalent to the wall thickness T of the mirror sleeve.

[0010] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that: a plurality of through grooves are evenly distributed on the cylindrical surface of the optical fiber adjustment seat clamp ring, and the number of the grooves is the same as the number of the bosses of the lens sleeve, and they correspond one to one; the shape of the groove is 7-shaped, and the horizontal length L 横 Control the compression of the corrugated spring, the vertical length L 竖 To control the rotation angle, the inner diameter B of the cylindrical surface matches the outer diameter A of the cylindrical surface of the lens sleeve, and the rear square structure is used to install the optical fiber adjustment seat.

[0011] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that the optical fiber head is installed on the optical fiber adjustment seat, and the pitch and yaw of the optical fiber head are fine-tuned by rotating the adjustment screw.

[0012] The optical fiber quick locking device with high repeat positioning accuracy is characterized in that the head of the optical fiber is installed on the optical fiber adjustment seat.

[0013] The corrugated spring is installed in the fiber optic adjustment seat clamping ring through a pressure plate. The fiber optic adjustment seat fixes the fiber optic head. The fiber optic adjustment seat is fastened to the rear of the fiber optic adjustment seat clamping ring through screws. The fiber optic adjustment seat clamping ring is screwed into the mirror sleeve. The small bosses evenly distributed on the cylindrical surface of the mirror sleeve enter the grooves at the corresponding positions of the cylindrical surface of the fiber optic adjustment seat clamping ring. At the same time, the corrugated spring is compressed. When it is screwed in to the end point, the small bosses are pushed into the end of the groove under the reaction force of the corrugated spring. The rotation angle is small during the whole process, and it is stable and not loose after being installed in place.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. High repeatability and positioning accuracy;

[0016] 2. Quick disassembly and installation;

[0017] 3. The installation rotation angle is small to avoid optical fiber entanglement and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the assembly of a high-repeatability optical fiber quick locking device.

[0019] Figure 2 Explosion diagram of a high-repeatability optical fiber quick locking device DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 , 2 The implementation example of the patented method is described in detail.

[0021] The basic size of the outer diameter of the front cylindrical surface of the lens sleeve 1 is 60mm, with positive tolerance and axial length of 6mm. There are three bosses with a diameter of 2.2mm and a height of 1.5mm on the cylindrical surface. The basic size of the inner diameter of the front cylindrical surface of the optical fiber adjustment seat ring 4 is 60mm, with negative tolerance, and it forms a small gap between the hole and the axis with the front cylindrical surface of the lens sleeve 1. There are three through grooves on the cylindrical surface, which correspond to the bosses on the lens sleeve 1 one by one. The shape of the groove is 7-shaped, with a horizontal length of 4.25mm and a vertical length of 6.5mm. The outer diameter of the corrugated spring 3 is 59mm, the width of the spring is 3.6mm, and the thickness is 0.45mm. It is fixed to the inner end face of the optical fiber fixing seat ring 4 by the pressure plate 2 and 4 screws. The optical fiber adjustment seat 5 fixes the head of the optical fiber 6. The optical fiber adjustment seat 5 is fastened to the rear of the optical fiber adjustment seat ring 4 by 2 screws. The pitch and yaw of the optical fiber 6 head can be fine-tuned by rotating the adjustment screw of the optical fiber adjustment seat 5. The optical fiber adjustment seat snap ring 4 is screwed into the lens sleeve 1 clockwise, and the small bosses evenly distributed on the cylindrical surface of the lens sleeve 1 enter the 7-shaped groove at the corresponding position of the cylindrical surface of the optical fiber adjustment seat snap ring 4. At the same time, the corrugated spring 3 is compressed. When the screwing reaches the end, under the reaction force of the corrugated spring 3, the boss of the lens sleeve 1 is pushed into the circular hole at the end of the groove of the optical fiber adjustment seat snap ring 4 and locked. When disassembling, rotate counterclockwise. The rotation angle is small during the whole process, and it is stable and not loose after being installed in place.

Claims

1. An optical fiber quick locking device with high repeatability positioning accuracy, the device comprising a lens housing (1), a pressure plate (2), a corrugated spring (3), an optical fiber adjustment seat clamp (4), an optical fiber adjustment seat (5) and an optical fiber (6), characterized in that: The corrugated spring (3) is installed inside the optical fiber adjustment seat clamping ring (4) through the pressure plate (2); the optical fiber adjustment seat (5) fixes the head of the optical fiber (6); the optical fiber adjustment seat (5) is fastened to the rear of the optical fiber adjustment seat clamping ring (4) through screws; the optical fiber adjustment seat clamping ring (4) is rotated to be inserted into the mirror sleeve (1); small bosses evenly distributed on the cylindrical surface of the mirror sleeve (1) enter the clamping grooves at corresponding positions on the cylindrical surface of the optical fiber adjustment seat clamping ring (4); and the corrugated spring (3) is compressed. When the screwing reaches the end point, the small bosses are pushed into the end of the clamping groove under the reaction force of the corrugated spring (3).

2. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: A plurality of small bosses are evenly distributed on the cylindrical surface of the lens sleeve (1), and the outer diameter A of the cylindrical surface where the small bosses are located matches the inner diameter B of the cylindrical surface of the optical fiber adjustment seat clamp (4).

3. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: The pressing plate (2) is in the shape of a ring, with holes punched on the ring surface and lugs extending from the periphery to press the corrugated spring (3).

4. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: The outer diameter of the corrugated spring (3) is smaller than the inner diameter B of the cylindrical surface of the optical fiber adjustment seat clamp (4), and the width W of the spring leaf is equivalent to the wall thickness T of the lens sleeve (1).

5. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: The cylindrical surface of the optical fiber adjustment seat clamp (4) is uniformly distributed with a plurality of through grooves, the number of which is the same as the number of bosses of the lens sleeve (1), and corresponds one to one; the shape of the groove is a 7-shaped, wherein the horizontal length L 横 Control the compression of the corrugated spring, the vertical length L 竖 To control the rotation angle, the inner diameter B of the cylindrical surface matches the outer diameter A of the cylindrical surface of the lens sleeve (1), and the rear square structure is used to install the optical fiber adjustment seat (5).

6. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: The head of the optical fiber (6) is mounted on the optical fiber adjustment seat (5), and the pitch and yaw of the optical fiber head are finely adjusted by rotating the adjustment screw.

7. The optical fiber quick locking device with high repeatability positioning accuracy according to claim 1, characterized in that: The head of the optical fiber (6) is mounted on the optical fiber adjustment seat (5).

Images