Light beam adjustable long-distance detection correlation optical fiber head

Abstract

A beam-adjustable long-distance detection correlation optical fiber head relates to an improvement of a correlation optical fiber head, and is characterized in that an emission metal outer tube is a threaded tube, two lenses and a lens fixing sleeve are arranged on the left side in the tube, and a lens support, an optical fiber pressing sleeve and a locking cap are arranged on the right side of the lens on the right side; the optical fiber is pressed and fastened by the lens bracket, the optical fiber pressing sleeve and the locking cap; the receiving metal outer tube is a threaded tube, a lens is arranged on the left side in the tube, a lens support, an optical fiber pressing sleeve and a locking cap are arranged on the right side of the lens, and an optical fiber is pressed and fastened through the lens support, the optical fiber pressing sleeve and the locking cap. Glue pouring is not needed in the whole assembling and using process of the correlation optical fiber head, the detection head can be disassembled, maintained and repaired at any time, installation and fastening are fast and convenient, the maintainability of the detection head can be improved to a great extent, the detection distance is long, and the relative position of the optical fiber and the lens can be adjusted in real time according to requirements.

Description

Technical Field

[0001] The utility model relates to an improvement of a photoelectric detection device, in particular to an improvement of a beam-adjustable long-distance detection optical fiber head. Background Art

[0002] Photoelectric detection is widely used because of its advantages such as high precision, fast response and non-contact. Optical fiber is widely used in many application scenarios because of its advantages such as high sensitivity, simple structure and flexible and diverse forms.

[0003] The existing optical fiber heads are all fixed by glue filling after assembly. The detection heads fixed by glue filling are widely accepted because of the good stability of the connection points and contacts. However, the biggest drawback of glue filling is the difficulty of disassembly and maintenance. Some shells are almost impossible to disassemble after glue filling, which seriously affects the maintainability of the optical fiber head. In actual use, it can only be replaced but not repaired and maintained, which increases the cost of use. At the same time, glue filling requires a long time to wait for the glue to solidify, which increases the production cycle and production cost of the optical fiber head. In addition, grinding will produce dust and sewage, which increases environmental pollution during the production process. Utility Model Content

[0004] The purpose of the utility model is to provide an improvement on a fiber optic head with adjustable light beam and long-distance detection in view of the defects and shortcomings of the prior art. The utility model adopts the rotation of a locking cap to achieve compression and tightening. No glue is required during installation and use. The detection head can be disassembled, maintained and repaired at any time, and installation and tightening are quick and convenient.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it comprises a transmitting part 1 and a receiving part 2; the transmitting part comprises: a transmitting metal outer tube 11, two lenses 12, a transmitting lens bracket 13, a transmitting locking cap 14, a transmitting optical fiber compression sleeve 15, a receiving optical fiber 26, and a lens fixing sleeve 17; the transmitting metal outer tube 11 is a threaded tube 133; two lenses 12 are arranged on the left side of the transmitting metal outer tube 11; a lens fixing sleeve 17 is arranged between the two lenses; a receiving lens bracket 23 is arranged on the right side of the right lens 122; the transmitting locking cap 14 is connected to the right side of the lens bracket through a threaded sleeve; a transmitting optical fiber compression sleeve 15 is arranged on the right side of the lens bracket 12 in the locking cap; and a receiving optical fiber 26 is arranged on the right side of the lens bracket 12. The transmitting locking cap 14 and the transmitting optical fiber compression sleeve 15 are passed through and inserted into the transmitting lens bracket 13; the receiving part comprises: a receiving metal outer tube 21, a lens 22, a receiving lens bracket 23, a receiving locking cap 24, a receiving optical fiber compression sleeve 25, and a receiving optical fiber 26. The receiving metal outer tube 21 is a threaded tube 233. A lens 22 is arranged on the left side of the receiving metal outer tube 21, and a receiving lens bracket 23 is arranged on the right side of the lens 22. The right side of the receiving lens bracket 23 is connected with the transmitting locking cap 14 through a threaded sleeve, and a receiving optical fiber compression sleeve 25 is arranged on the right side of the receiving lens bracket 23 in the transmitting locking cap 14. The receiving optical fiber 26 passes through the transmitting locking cap 14, and the receiving optical fiber compression sleeve 25 is inserted into the receiving lens bracket 23.

[0006] The left part of the emitting lens bracket 13 is an emitting circular tube 131, the left part of the emitting inner cavity 132 of the emitting circular tube 131 is conical, the right part of the emitting lens bracket 13 is an emitting threaded tube 133, and the emitting circular tube 131 is partially inserted into the emitting metal outer tube 11 and fixed.

[0007] The left part of the receiving lens bracket 23 is a receiving circular tube 231, the left part of the receiving inner cavity 232 of the receiving circular tube 231 is conical, and the right part of the receiving lens bracket 23 is a receiving threaded tube 233. The receiving circular tube 231 on the left part of the lens bracket is tightly inserted into the receiving metal outer tube 21 and fixed.

[0008] The transmitting optical fiber compression sleeve 15 is a tapered tube, and has multiple transmitting fixing grooves 151 on the transmitting optical fiber compression sleeve 15.

[0009] The receiving portion receiving optical fiber compression sleeve 25 is a tapered tube, and the receiving optical fiber compression sleeve 25 has multiple receiving fixing grooves 251 .

[0010] The left inner cavity of the transmitting locking cap 14 is provided with a threaded cavity 141 , and the right inner cavity of the locking cap 14 is provided with a tapered cavity 142 ; the threaded cavity 141 is sleeved with the threaded tube 134 , and the transmitting optical fiber compression sleeve 15 is provided in the tapered cavity 142 .

[0011] The left part of the inner cavity of the receiving locking cap 24 is a threaded cavity 241 , and the right part is a tapered cavity 242 . The threaded cavity 241 is sleeved with the threaded tube 234 of the receiving lens bracket 23 , and the receiving optical fiber compression sleeve 25 is arranged in the tapered cavity 242 .

[0012] The working principle of the utility model is as follows: the transmitting part contains two lenses. The light derived from the optical fiber passes through the first lens near the optical fiber end to initially focus the emitted light and then irradiate it to the second lens farther from the optical fiber, and then focuses it again, finally forming nearly parallel light, so that the light can be emitted farther. The light is emitted to the receiving part, and the lens of the receiving part will focus the received light and transmit it to the optical fiber behind the lens. This receiving method can reduce the loss of light, greatly improve the light receiving rate, and thus improve the receiving capacity. The light of the transmitting part is emitted farther, and the receiving rate of the receiving part is improved, so that the detection distance is greatly extended.

[0013] In addition, when in use, the optical fiber is passed through the locking cap and the optical fiber compression sleeve and inserted into the lens holder. At this time, the locking cap is screwed inwards, and the threaded tube and the locking cap on the right side of the lens holder squeeze the compression sleeve from opposite directions. The pressure will cause the right port of the compression sleeve to shrink inward, and the shrinking port will exert pressure on the optical fiber inside it, thereby clamping the optical fiber; ensuring the stability of the optical fiber in the detection head, omitting the process of gluing and pouring glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the internal structure of the transmitting part (1) of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the receiving part (2) of the utility model;

[0017] Explanation of the reference numerals: Transmitting part 1: a transmitting metal outer tube 11, two lenses 12, a lens fixing sleeve 17, a transmitting lens bracket 13, a transmitting optical fiber compression sleeve 15, a locking cap 13 and a transmitting optical fiber 16; Receiving part 2: a receiving metal outer tube 21, a lens 22, a receiving lens bracket 23, a receiving optical fiber compression sleeve 25, a receiving locking cap 24 and a receiving optical fiber 26. DETAILED DESCRIPTION

[0018] See also Figure 1-2As shown, the technical solution adopted in this specific embodiment is: it includes a transmitting part 1 and a receiving part 2; the transmitting part 1 includes: a transmitting metal outer tube 11, two lenses 12, a transmitting lens bracket 13, a transmitting locking cap 14, a transmitting optical fiber compression sleeve 15, a transmitting optical fiber 16, and a lens fixing sleeve 17. The transmitting metal outer tube 11 is a threaded tube, and two lenses 12 are arranged on the left side of the transmitting metal outer tube 11, and a lens fixing sleeve 17 is arranged between the two lenses 12. The right side of the right lens 122 is provided with a transmitting lens bracket 13, and the right side of the transmitting lens bracket 13 is connected with the transmitting locking cap 14 through a threaded sleeve. Inside the transmitting locking cap 14, the right side of the transmitting lens bracket 13 is provided with a transmitting optical fiber compression sleeve 15. The optical fiber 16 passes through the transmitting locking cap 14 and the transmitting optical fiber compression sleeve 15 and is inserted into the transmitting lens bracket 13; the receiving part 2 comprises: a receiving metal outer tube 21, a lens 22, a receiving lens bracket 23, a receiving locking cap 24, a receiving optical fiber compression sleeve 25, and a receiving optical fiber 26. The receiving metal outer tube 21 is a threaded tube, and a lens 22 is arranged on the left side of the receiving metal outer tube 21, and a receiving lens bracket 23 is arranged on the right side of the lens 22. The receiving locking cap 24 is threadedly connected to the right side of the receiving lens bracket 23, and a receiving optical fiber compression sleeve 25 is arranged on the right side of the receiving lens bracket 23 inside the receiving locking cap 24. The receiving optical fiber 26 passes through the receiving locking cap 24 and the receiving optical fiber compression sleeve 25 and is inserted into the receiving lens bracket 23.

[0019] The transmitting part 1 contains two lenses 12. The light derived from the transmitting optical fiber 16 passes through the first lens 12 near the optical fiber end, which initially focuses the transmitted light and then irradiates it to the second lens 12 farther from the transmitting optical fiber 16, and then focuses it again, finally forming nearly parallel light, so that the light can be emitted farther. The light is emitted to the receiving part 2, and the lens 22 of the receiving part 2 will focus the received light and transmit it to the receiving optical fiber 26 behind the lens 22. This receiving method can reduce the loss of light, greatly improve the light receiving rate, and thus improve the receiving capacity. The light of the transmitting part is emitted farther, and the receiving part has a higher receiving rate, which greatly increases the detection distance.

[0020] The optical fiber fastening structure and method are the same when the transmitting part 1 and the receiving part 2 are assembled and manufactured. Now, the transmitting part is used as an example for explanation.

[0021] When the transmitting part 1 is assembled and manufactured, the transmitting optical fiber 16 is passed through the transmitting locking cap 14, and the transmitting optical fiber compression sleeve 15 is inserted into the transmitting lens bracket 13. At this time, the transmitting locking cap 14 is screwed inward, and the threaded tube 133 on the right part of the transmitting lens bracket 13 and the transmitting locking cap 14 squeeze the transmitting optical fiber compression sleeve 15 from opposite directions. The pressure will cause the right end of the transmitting optical fiber compression sleeve 15 to shrink inward, and the shrinking port will exert pressure on the transmitting optical fiber 16 inside it, thereby clamping the transmitting optical fiber 16, omitting the process of gluing and pouring glue.

[0022] After adopting the above technical solution, it uses the locking cap to rotate to achieve compression and tightening. No glue is required during installation and use. The detection head can be disassembled, maintained and repaired at any time, and installation and tightening are quick and convenient.

[0023] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A long-distance detection optical fiber head with adjustable light beam, characterized by: It comprises a transmitting part (1) and a receiving part (2); the transmitting part (1) comprises: a transmitting metal outer tube (11), two lenses (12), a transmitting lens bracket (13), a transmitting locking cap (14), a transmitting optical fiber compression sleeve (15), a transmitting optical fiber (16), and a lens fixing sleeve (17); the transmitting metal outer tube (11) is a threaded tube; two lenses (12) are arranged on the left side of the transmitting metal outer tube (11); a lens fixing sleeve (17) is arranged between the two lenses (12); a transmitting lens bracket (13) is arranged on the right side of the right lens (122); the transmitting locking cap (14) is connected to the right side of the transmitting lens bracket (13) through a threaded sleeve; a transmitting optical fiber compression sleeve (15) is arranged on the right side of the transmitting lens bracket (13) in the transmitting locking cap (14); the transmitting optical fiber (16) passes through the transmitting locking cap. (14), the transmitting optical fiber compression sleeve (15) is inserted into the transmitting lens bracket (13); the receiving part (2) comprises: a receiving metal outer tube (21), a lens (22), a receiving lens bracket (23), a receiving locking cap (24), a receiving optical fiber compression sleeve (25), and a receiving optical fiber (26); the receiving metal outer tube (21) is a threaded tube; a lens (22) is arranged on the left side of the receiving metal outer tube (21); a receiving lens bracket (23) is arranged on the right side of the lens (22); a receiving locking cap (24) is threadedly connected to the right side of the receiving lens bracket (23); a receiving optical fiber compression sleeve (25) is arranged on the right side of the receiving lens bracket (23) in the receiving locking cap (24); the receiving optical fiber (26) passes through the receiving locking cap (24) and the receiving optical fiber compression sleeve (25) and is inserted into the receiving lens bracket (23).

2. According to claim 1, the optical fiber head with adjustable light beam and long distance detection is characterized in that: The left part of the emission lens bracket (13) is an emission circular tube (131), the left part of the emission inner cavity (132) of the emission circular tube (131) is conical, the right part of the emission lens bracket (13) is an emission threaded tube (133), and the emission circular tube (131) is partially inserted into the emission metal outer tube (11) and fixed.

3. The optical fiber head with adjustable light beam and long distance detection according to claim 1, characterized in that: The left part of the receiving lens bracket (23) is a receiving circular tube (231), the left part of the receiving inner cavity (232) of the receiving circular tube (231) is conical, the right part of the receiving lens bracket (23) is a receiving threaded tube (233), and the receiving circular tube (231) on the left part of the lens bracket is tightly inserted into the receiving metal outer tube (21) and fixed.

4. The optical fiber head with adjustable light beam and long distance detection according to claim 1, characterized in that: The transmitting optical fiber compression sleeve (15) is a tapered tube, and a plurality of transmitting fixing grooves (151) are provided on the transmitting optical fiber compression sleeve (15).

5. The optical fiber head with adjustable light beam and long distance detection according to claim 1, characterized in that: The receiving optical fiber compression sleeve (25) is a tapered tube, and a plurality of receiving fixing grooves (251) are provided on the receiving optical fiber compression sleeve (25).

6. The optical fiber head with adjustable light beam and long distance detection according to claim 1, characterized in that: The left inner cavity of the transmitting locking cap (14) is provided with a threaded cavity (141), and the right inner cavity of the locking cap (14) is provided with a tapered cavity (142); the threaded cavity (141) is sleeved with the threaded tube (134), and the transmitting optical fiber compression sleeve (15) is arranged in the tapered cavity (142).

7. The optical fiber head with adjustable light beam and long distance detection according to claim 1, characterized in that: The left part of the inner cavity of the receiving locking cap (24) is a threaded cavity (241), and the right part is a tapered cavity (242). The threaded cavity (241) is sleeved with the threaded tube (234) of the receiving lens bracket (23), and the receiving optical fiber compression sleeve (25) is arranged in the tapered cavity (242).

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