CN201017068Y

CN201017068Y - Optical fiber collimating device

Info

Publication number: CN201017068Y
Application number: CNU2007201395526U
Authority: CN
Inventors: 王锦祥
Original assignee: Asia Optical Co Inc
Current assignee: Asia Optical Co Inc
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-02-06
Anticipated expiration: 2017-02-13

Abstract

The utility model relates to an optical fiber collimator and comprises an external pipe, a graded refractive index lens and an optical fiber. The external pipe is provided with a pipe wall, which defines a faucet hole axially. The faucet hole is provided with a first hole section and a second hole section communicating with the first hole section. The graded refractive rate lens is in faucet-connection with the first hole section axially and is provided with a first end section extending into the first hole section. The first end section is provided with a first oblique end surface facing the second hole section. The optical fiber is in faucet-connection with the second hole section axially and is provided with a second end section extending into the first hole section. The second end section is provided with a second oblique end surface substantially parallel with the first oblique end surface.

Description

Optical fiber collimator

Technical field

The utility model relates to a kind of collimating apparatus, particularly a kind of optical fiber collimator of being convenient to make.

Background technology

As shown in Figure 1, known a kind of optical fiber collimator comprises a glass outer tube 1 with an endoporus 101, one and the fibre-optic catheter unit 2 of the wherein end socket of this endoporus 101, one and the gradually changed refractive index lens 3 of the other end socket of this endoporus 101, and one can be for the sheathed metal outer pipe 4 of this glass outer tube 1.This fibre-optic catheter unit 2 comprises a grass tube 201 with a through hole 204, one and the optical fiber 202 of these through hole 204 sockets, and the anti-reflective film 203 on this grass tube 201 and this optical fiber 202 dip plane inwardly is located in a plating.

When actual assembled, be earlier with this fibre-optic catheter unit 2 and these gradually changed refractive index lens 3 and this glass outer tube 1 socket, and after relative position to this collimating apparatus of adjusting this fibre-optic catheter unit 2 and these gradually changed refractive index lens 3 obtains minimum reflection loss, utilize jelly that this fibre-optic catheter unit 2 is fixed in this glass outer tube 1 with these gradually changed refractive index lens 3 again, utilize jelly that this glass outer tube 1 is fixed in this collimation steel pipe 4 at last again.

Though this kind optical fiber collimator is available for combination or separates the light signal with different wave length,, when reality was made, this optical fiber collimator but had following defective:

Because the aperture that the endoporus 101 of this glass outer tube 1 only has single size, and the aperture of this endoporus 101 is the external diameters much larger than this optical fiber 202, therefore, in order to overcome the difference between these optical fiber 202 external diameters and this endoporus 101 apertures, and this optical fiber 202 can be positioned in this endoporus 101, this optical fiber 202 must be equal to grass tube 201 combinations in these endoporus 101 apertures earlier with external diameter, when this optical fiber 202 makes up with this grass tube 201, as shown in Figure 2, this grass tube 201 must be offered earlier can be for the sheathed through hole 204 of this optical fiber 202, then, need utilize a buffing machine (figure does not show) simultaneously this grass tube 201 to be thrown with the inner face of this optical fiber 202 again and be cut into dip plane with certain angle of inclination, at last, more need again this anti-reflective film 203 to be plated simultaneously on the dip plane of being located at this grass tube 201 and this optical fiber 202.From the above, the fabricator is in order to be positioned this optical fiber 202 in this endoporus 101, not only need to produce this grass tube 201 in addition and cooperate with this optical fiber 202, and, cut in throwing and to add man-hour, more need to throw simultaneously the end face of cutting this grass tube 201, cause the increase in the range of work and man-hour, moreover, add man-hour at plated film, more this anti-reflective film 203 need be plated simultaneously and be located on the end face of this grass tube 201, cause the increase in plated film area and man-hour.

The utility model content

Therefore, the technical problems to be solved in the utility model is, at the above-mentioned defective of prior art, a kind of can the encapsulation fast is provided and is convenient to make, and can reduce the optical fiber collimator of making required part number, man-hour and cost.

The utility model is that the technical scheme that its technical matters of solution is adopted is, construct a kind of optical fiber collimator, comprise outer tube, refraction progressive lens and optical fiber, wherein said outer tube has around the tube wall that axially defines sleeve joint hole, the second hole section that described sleeve joint hole has the first hole section and is communicated with the described first hole section; Be somebody's turn to do axially and the described first hole section socket on described gradually changed refractive index lens edge, and have the first end that extends in the described first hole section, and described first end has first inclined end face towards the described second hole section; Described optical fiber along described axially with the described second hole section socket, and have the second end that extends in the described first hole section, described the second end has second inclined end face that is parallel to described first inclined end face.

In optical fiber collimator described in the utility model, described tube wall has around first inner peripheral surface that forms the described first hole section, around second inner peripheral surface that forms the described second hole section, and is defined in the ring shoulder face between described first and second inner peripheral surface.

In optical fiber collimator described in the utility model, described outer tube also has plating and is located at Gold plated Layer on described second inner peripheral surface.

In optical fiber collimator described in the utility model, the aperture of the first hole section of described sleeve joint hole is greater than the aperture of the described second hole section.

In optical fiber collimator described in the utility model, first dip plane of the first end of described gradually changed refractive index lens with perpendicular to described axial vertical axle clamp one pitch angle, described pitch angle is between 6 °～10 °.

In optical fiber collimator described in the utility model, described pitch angle is to be 8 °.

In optical fiber collimator described in the utility model, described optical fiber also has plating and is located at anti-reflective film on described second inclined end face.

Implement optical fiber collimator of the present utility model, have following beneficial effect:

One, sleeve joint hole has first and second hole section that the aperture corresponds respectively to these gradually changed refractive index lens and this optical fiber external diameter, therefore, can directly this optical fiber be socketed in this second hole section, compared to known technology, need not use this additional parts of grass tube to come fully in conjunction with this optical fiber and this outer tube, not only can effectively reduce and make required part number and Material Cost, can reduce significantly that more this optical fiber and this outer tube are fitted together the required man-hour of expending, and can encapsulate fast and be convenient to make.

Two, cut in throwing and add man-hour, only need utilize known buffing machine to go to throw and cut the second end of this optical fiber of processing, and form this second inclined end face, therefore,, can effectively reduce and throw the range of work and the man-hour of cutting processing compared to known technology.

Three, add man-hour at plated film, only this anti-reflective film is established in need plating on second inclined end face of the second end of this optical fiber, therefore, compared to known technology, can effectively reduce the plated film area and the man-hour of plated film processing.

Four, plating is provided with soft Gold plated Layer on second inner peripheral surface of the tube wall of this outer tube, and therefore, when the second hole section socket of the sleeve joint hole of this optical fiber and this outer tube, this Gold plated Layer can prevent effectively that second inclined end face of this optical fiber is worn.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the combination cross-sectional schematic of known a kind of optical fiber collimator;

Fig. 2 is the manufacturing synoptic diagram of a fibre-optic catheter unit of known optical fiber collimator; And

Fig. 3 is the combination cross-sectional schematic of a preferred embodiment of the utility model optical fiber collimator.

The drawing reference numeral explanation:

10 outer tubes, 11 tube walls

111 first inner peripheral surfaces, 112 second inner peripheral surfaces

113 ring shoulder faces, 12 sleeve joint holes

121 first hole sections, 122 second hole sections

13 Gold plated Layer, 20 gradually changed refractive index lens

21 first ends, 211 first inclined end faces

30 optical fiber, 31 the second ends

311 second inclined end faces, 32 anti-reflective films

The axial Y of X is vertical

The θ pitch angle

Embodiment

Aforementioned and other technology contents, characteristics and effect of the present utility model in the detailed description of a preferred embodiment of following conjunction with figs., can clearly be understood.

With reference to Fig. 3, a preferred embodiment of optical fiber collimator of the present utility model comprises: outer tube 10, gradually changed refractive index lens 20, and optical fiber 30.

This outer tube 10 has one and centers on the tube wall 11 that an axial X defines a sleeve joint hole 12, and a Gold plated Layer 13.

This tube wall 11 has one first inner peripheral surface 111, one second inner peripheral surface 112, and a ring shoulder face 113 that is defined between this first and second inner peripheral surface 111,112.This Gold plated Layer 13 is that plating is located on this second inner peripheral surface 112.

This sleeve joint hole 12 have one by this first inner peripheral surface 111 around the first hole section 121 that defines, and one by this second inner peripheral surface 112 around the second hole section 122 that defines and be communicated with this first hole section 121.

In the present embodiment, the aperture of the first hole section 121 of this sleeve joint hole 12 is the apertures greater than this second hole section 122, the aperture of this first hole section 121 comes down to equal the external diameter of these gradually changed refractive index lens 20, and the aperture of this second hole section 122 comes down to equal the external diameter of this optical fiber 30.

These gradually changed refractive index lens 20 are along this axial X and this first hole section 121 sockets, and have a first end 21 that extends in this first hole section 121, and this first end 21 has first inclined end face 211 towards this second hole section 122.

In the present embodiment, this first dip plane 211 is to press from both sides a tiltangle with a vertical Y perpendicular to this axial X, and this tiltangle is advisable with 6 °～10 °, and best angle is to be 8 °.

This optical fiber 30 is along this axial X and this second hole section 122 sockets, and has a second end 31 that extends in this first hole section 121, and an anti-reflective film 32.This second end 31 has second inclined end face 311 that is parallel to this first inclined end face 211 in fact, and this anti-reflective film 32 is that plating is located on this second inclined end face 311.

When actual assembled, the utility model is to utilize hot-setting adhesive or UV glue these gradually changed refractive index lens 20 to be fixed in the first hole section 121 of sleeve joint hole 12 of this outer tube 10 earlier, then, with of second hole section 122 sockets of this optical fiber 30 with this sleeve joint hole 12, then, second inclined end face 311 with this optical fiber 30 is adjusted to parallel with first inclined end face 211 of these gradually changed refractive index lens 20 again, and after adjusting the minimum optimal spacing of the utility model reflection loss, utilize hot-setting adhesive or UV glue that this optical fiber 30 is fixed in the second hole section 122 of this sleeve joint hole 12.

Via above explanation, can again advantage of the present utility model be summarized as follows:

One, the sleeve joint hole 12 of the utility model outer tube 10 has the aperture and corresponds respectively to these gradually changed refractive index lens 20 and first of these optical fiber 30 external diameters, two hole sections 121,122, therefore, the utility model can directly be socketed on this optical fiber 30 in this second hole section 122, compared to known techniques, the utility model need not use known grass tube 201 these additional parts to come in conjunction with this optical fiber 30 and this outer tube 10 fully, so, the utility model not only can effectively reduce makes required part number and Material Cost, can reduce significantly that more this optical fiber 30 and this outer tube 10 are fitted together the required man-hour of expending, and can encapsulate fast and be convenient to make.

Two, cut in throwing and add man-hour, the utility model only need utilize known buffing machine to go to throw and cut the second end 31 of this optical fiber 30 of processing, and forms this second inclined end face 311, therefore, compared to known techniques, the utility model can effectively reduce to be thrown the range of work and the man-hour of cutting processing.

Three, add man-hour at plated film, the utility model only needs to plate on second inclined end face 311 of the second end 31 of this optical fiber 30 establishes this anti-reflective film 32, and therefore, compared to known techniques, the utility model can effectively reduce the plated film area and the man-hour of plated film processing.

Four, the utility model plates on second inner peripheral surface 112 of the tube wall 11 of this outer tube 10 and is provided with soft Gold plated Layer 13, therefore, when the second hole section, 122 sockets of this optical fiber 30 and the sleeve joint hole 12 of this outer tube 10, this Gold plated Layer 13 can prevent effectively that second inclined end face 311 of this optical fiber 30 is worn.

Conclude above-mentionedly, optical fiber collimator of the present utility model not only can encapsulate fast and is convenient to make, and can reduce and make required part number, man-hour and Material Cost, and can prevent effectively that optical fiber is worn when assembling, so can reach the purpose of this utility model really.

The above only is preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented with this, be that all simple equivalent of doing according to the utility model claim and description change and modify, all still belong in the scope that the utility model patent contains.

Claims

1. an optical fiber collimator comprises outer tube, refraction progressive lens and optical fiber, it is characterized in that:

Described outer tube has around the tube wall that axially defines sleeve joint hole, the second hole section that described sleeve joint hole has the first hole section and is communicated with the described first hole section;

Be somebody's turn to do axially and the described first hole section socket on described gradually changed refractive index lens edge, and have the first end that extends in the described first hole section, and described first end has first inclined end face towards the described second hole section; And

Described optical fiber along described axially with the described second hole section socket, and have the second end that extends in the described first hole section, described the second end has second inclined end face that is parallel to described first inclined end face.

2. optical fiber collimator according to claim 1, it is characterized in that, described tube wall has around first inner peripheral surface that forms the described first hole section, around second inner peripheral surface that forms the described second hole section, and is defined in the ring shoulder face between described first and second inner peripheral surface.

3. optical fiber collimator according to claim 2 is characterized in that, described outer tube also has plating and is located at Gold plated Layer on described second inner peripheral surface.

4. optical fiber collimator according to claim 1 is characterized in that, the aperture of the first hole section of described sleeve joint hole is greater than the aperture of the described second hole section.

5. optical fiber collimator according to claim 1 is characterized in that, first dip plane of the first end of described gradually changed refractive index lens with perpendicular to described axial vertical axle clamp one pitch angle, described pitch angle is between 6 °～10 °.

6. optical fiber collimator according to claim 5 is characterized in that, described pitch angle is to be 8 °.

7. optical fiber collimator according to claim 1 is characterized in that, described optical fiber also has plating and is located at anti-reflective film on described second inclined end face.