CN203673152U - Laser capable of generating ring-shaped indication light - Google Patents
Laser capable of generating ring-shaped indication light Download PDFInfo
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- CN203673152U CN203673152U CN201320636246.9U CN201320636246U CN203673152U CN 203673152 U CN203673152 U CN 203673152U CN 201320636246 U CN201320636246 U CN 201320636246U CN 203673152 U CN203673152 U CN 203673152U
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- light
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- 239000000835 fiber Substances 0.000 claims description 38
- 239000004065 semiconductor Substances 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
The utility model discloses a laser capable of generating ring-shaped indication light. The laser comprises a main laser source, an indication light source and a focusing lens. A light beam emitted by the main laser source and a light beam emitted by the indication light source are incident on the focusing lens, and focused by the focusing lens. The maximum distance from a light spot formed on the surface of the focusing lens by the light beam emitted by the indication light source to the center of the focusing lens is no less than the distance from a light spot formed on the surface of the focusing lens by the light beam emitted by the main laser source to the center of the focusing lens. The laser provided by the utility model is used for generating ring-shaped indication light, thereby achieving definite division of working areas and non-working areas.
Description
Technical field
The utility model relates to laser technology field, particularly a kind of laser instrument that produces annular pilot light.
Background technology
In industry, medical science and scientific research field, often use centre wavelength for the infrared lasers such as 915nm, 980nm, 1064nm or 1470nm are as work light, above-mentioned work light belongs to invisible light; But in actual applications, conventionally need to know above-mentioned work light irradiation position and range of exposures accurately, therefore, need to utilize the light of visible wavelength indicate and guide as indication light source.
Laser instrument of the prior art, conventionally adopt another laser instrument of increase and corresponding coupled fiber or coupled lens system to reach the object that pilot light is provided, or utilize dichroic mirror to be coupled to work light and indication light source, it is exported with simple optical fiber; The Chinese patent that is 200820180756.9 as application number discloses a kind of device of coupling fiber when adopting dichroic mirror to carry out two kinds of laser, it is by the light that the semiconductor laser chip of two bundle different wave lengths is sent, respectively through post lens separately after quick shaft direction collimation, the dichroic mirror of the light transmission through to a wavelength, the light reflection to another wavelength closes bundle, focus on and be coupled to single optical fiber output through lens-light assembly again, obtain a solid hot spot.
Through the above, the pilot light that laser instrument of the prior art provides is all solid hot spot conventionally, the outward flange of the hot spot that its outward flange forms with work light not necessarily overlaps or its boundary fuzzy, this by the actual size that causes operator cannot know hot spot that work light forms with and edge extent, need perform region to be processed thereby operator can accurately not determined.
Utility model content
The utility model provides a kind of laser instrument that produces annular pilot light, in order to produce annular pilot light, realizes the clearly division to perform region and inoperative region.
The utility model provides a kind of laser instrument that produces annular pilot light, comprises primary laser source, indication light source and condenser lens, wherein:
The light beam that described primary laser source is sent incides respectively described condenser lens with the light beam that indication light source sends, and is focused on by described condenser lens;
The hot spot that the light beam that described indication light source sends forms on described condenser lens surface is to the ultimate range at described condenser lens center, is not less than hot spot that light beam that described primary laser source sends forms on the described condenser lens surface distance to described condenser lens center.
Preferably, the hot spot that the light beam that described indication light source sends forms on described condenser lens surface is to the minor increment at described condenser lens center, is not less than hot spot that light beam that described primary laser source sends forms on the described condenser lens surface distance to described condenser lens center.
Preferably, described indication light source comprises pilot light generator and the first fast and slow axis collimation lens; The first fast and slow axis collimation lens, carries out fast and slow axis collimation for the light beam that described pilot light generator is sent;
Described primary laser source comprises main laser generator and the second fast and slow axis collimation lens; The second fast and slow axis collimation lens, carries out fast and slow axis collimation for the light beam that described main laser generator is sent.
Preferably, described pilot light generator is semiconductor laser; Described main laser generator is semiconductor laser.
Preferably, described main laser generator is multiple semiconductor laser chips, and described multiple semiconductor laser chips are staggered.
Preferably, the laser instrument of the annular pilot light of described generation also comprises coupled fiber; The light beam that described coupled fiber focuses on for transmitting described condenser lens; The light beam that described indication light source sends is non-meridional beam.
Preferably, described condenser lens is any in GRIN Lens, spherical surface focusing mirror or non-spherical lens.
Preferably, the laser instrument of the annular pilot light of described generation also comprises a power supply, by this power supply to described primary laser source and described indication light source power supply; Or the laser instrument of the annular pilot light of described generation also comprises two power supplys, described primary laser source is powered by one in described power supply, by another in described power supply to described indication light source power supply.
The beneficial effect of the utility model embodiment is: by controlling respectively the hot spot of pilot light on condenser lens and the hot spot of main laser on the condenser lens distance to condenser lens center, make the hot spot of pilot light on condenser lens be not less than the distance of the hot spot of main laser on condenser lens to condenser lens center to the ultimate range at condenser lens center, like this after condenser lens focuses on, main laser is surrounded by annular pilot light, thereby the given scope of main laser, has realized the clearly division to perform region and inoperative region.
Accompanying drawing explanation
Fig. 1 is the first structural representation of a kind of laser instrument that produces annular pilot light of the utility model one embodiment;
Fig. 2 is the second structural representation of a kind of laser instrument that produces annular pilot light of the utility model one embodiment;
Fig. 3 is the schematic diagram that light beam that the pilot light generator of the utility model one embodiment sends incides the hot spot that condenser lens surface forms;
Fig. 4 is the schematic diagram that laser beam that the laser beam sent of multiple semiconductor laser chips of the main laser generator of the utility model one embodiment and pilot light generator send incides respectively the hot spot that condenser lens surface forms after speed collimation;
Fig. 5 is the 3rd structural representation of a kind of laser instrument that produces annular pilot light of the utility model one embodiment;
Fig. 6 is the coupled fiber schematic diagram of the utility model one embodiment;
Fig. 7 is that the light beam of the utility model one embodiment transmits schematic diagram through coupled fiber;
Fig. 8 is the non-meridional ray of the utility model one embodiment travel path schematic diagram in coupled fiber;
Fig. 9 is the schematic diagram of a kind of laser instrument that produces annular pilot light of the utility model one embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
As shown in Figure 1, the utility model embodiment provides a kind of laser instrument 10 that produces annular pilot light, comprises primary laser source 11, indication light source 12 and condenser lens 13, wherein:
The light beam that described primary laser source 11 is sent incides respectively described condenser lens 13 with the light beam that indication light source 12 sends, and is focused on by described condenser lens 13;
The hot spot that the light beam that described indication light source 12 sends forms on described condenser lens 13 surfaces is to the ultimate range at described condenser lens 13 centers, is not less than hot spot that light beam that described primary laser source 11 sends forms on the described condenser lens 13 surfaces distance to described condenser lens 13 centers; Wherein, described ultimate range refers to the ultimate range in the plane perpendicular to optical axis between light beam that described primary laser source 11 is sent and the optical axis of condenser lens 13.In conjunction with follow-up explanation (from Fig. 6 to Fig. 8), the range of exposures that the outer peripheral inside of the annular hot spot that now visible ray of the outgoing after coupled fiber transmission forms at irradiation position is sightless main laser.
In an embodiment of the present utility model, the hot spot that the light beam that described indication light source 12 sends forms on described condenser lens 13 surfaces is to the minor increment at described condenser lens 13 centers, is not less than hot spot that light beam that described primary laser source 11 sends forms on the described condenser lens 13 surfaces distance to described condenser lens 13 centers; Wherein, described minor increment refers to the minor increment in the plane perpendicular to optical axis between light beam that described primary laser source 11 is sent and the optical axis of condenser lens 13.In conjunction with follow-up explanation (from Fig. 6 to Fig. 8), the range of exposures that the inside of the inward flange of the annular hot spot that now visible ray of the outgoing after coupled fiber transmission forms at irradiation position is sightless main laser.
In an embodiment of the present utility model, as shown in Figure 2, described primary laser source 11 comprises main laser generator 111 and the first fast and slow axis collimation lens 112; The light beam that main laser generator 111 sends incides described condenser lens 13 after the first fast and slow axis collimation lens 112 carries out speed collimation; Same, described indication light source 12 comprises pilot light generator 121 and the second fast and slow axis collimation lens 122; The light beam that described pilot light generator 121 sends incides described condenser lens 13 after the second fast and slow axis collimation lens 122 carries out speed collimation.The optical axis of the light beam wherein, collimating through fast and slow axis is parallel with the optical axis of described condenser lens 13.
In an embodiment of the present utility model, described pilot light generator 121 is semiconductor laser; Described main laser generator 111 is semiconductor laser.The laser beam of sending due to semiconductor laser has the extreme asymmetry of the fast and slow axis angle of divergence, therefore needs the laser beam of sending by fast and slow axis collimation lens noise spectra of semiconductor lasers to carry out fast and slow axis collimation, becomes approximate construction collimated optical beam.This light beam incides the surperficial hot spot schematic diagram forming of condenser lens 13 as shown in Figure 3, and described hot spot is proximal line hot spot, and wherein, the length direction of hot spot is slow-axis direction, and cross direction is quick shaft direction.In addition, scrutable, in Fig. 3, little radius of a circle shown in dotted line is the minor increment of this hot spot to described condenser lens 13 centers, and large radius of a circle shown in dotted line is the ultimate range of this hot spot to described condenser lens 13 centers.
In an embodiment of the present utility model, described main laser generator 111 is multiple semiconductor laser chips, described multiple semiconductor laser chip is staggered, for example, staggered on space in the vertical direction, and the laser beam that each semiconductor laser chip is sent carries out speed collimation through speed collimation lens, become approximate construction collimated optical beam.Fig. 4 is that the laser beam that the laser beam sent of multiple semiconductor laser chips of main laser generator 111 and pilot light generator 121 send incides respectively the hot spot schematic diagram that condenser lens 13 surfaces form after speed collimation.Wherein, the hot spot of Fig. 4 top is that the laser beam that pilot light generator 121 sends incides the hot spot that condenser lens 13 surfaces form after speed collimation, and five hot spots of below are that the laser beam that multiple semiconductor laser chips of main laser generator 111 send incides the hot spot that condenser lens 13 surfaces form after speed collimation.
In an embodiment of the present utility model, the laser instrument of the annular pilot light of described generation also comprises coupled fiber 14; As shown in Figure 5, the light beam that described coupled fiber 14 focuses on for transmitting described condenser lens 13; The light beam that described indication light source 12 sends is non-meridional beam; Wherein, the function of described primary laser source 11, indication light source 12 and condenser lens 13 is consistent with the function of Fig. 1 or Fig. 2, will repeat no more herein.
Be illustrated in figure 6 a common single covering coupled fiber model, due to play leaded light effect for fibre core 141 and covering 142, therefore in figure, omit other the structure such as coat.Fibre core 141 and covering 142 generally all adopt fused silica material, and the refractive index of supposing fibre core 141 is that n1, cladding index are n2, the numerical aperture that NA is coupled fiber, so
now, only inciding the light that fibre core 141 and incident angle be less than θ just can become guided wave mould and transmit along fibre core 141, and incidence angle θ need meet θ≤arcSinNA.In general,, if coupled fiber is not subject to excessive stress and strain, incident ray is with α
1incident angle enter fibre core 141, the angle of divergence alpha of the emergent ray after coupled fiber 14 transmission
2should approximate α
1, the angle of divergence of the emergent ray of coupled fiber 14 approximates the angle of divergence of corresponding incident ray.Therefore,, in Fig. 7, when the light 71 within the scope of a certain solid angle that dotted line is described incides after fibre core 141, the emergent light after coupled fiber 14 transmission should be a ring of light 72, and the solid angle of the ring of light approximates the solid angle of incident light.The travel path schematic diagram of non-meridional ray in coupled fiber as shown in Figure 8, in the utility model, because the visible light beam of indicating light source 11 to send is in coupling light, it in 14, is non-meridional beam, even if can guarantee that the visible ray in the case of inciding coupled fiber 14 is not ring light, the visible ray of the outgoing after coupled fiber 14 transmission can be ring light, thereby forms annular hot spot at irradiation position.
In addition, the light that meets Optical Fiber Numerical Aperture due to incident angle just can transmit along coupled fiber 14, and the diameter of supposing the fibre core 141 of optical fiber is d, and numerical aperture is NA, the focal length of condenser lens 13 is f, and the parallel beam that incides condenser lens 13 need to be not more than apart from the distance of its central shaft
according to above-mentioned analysis, the laser beam of sending when laser beam that main laser generator 111 sends and pilot light generator 121 incides respectively the proximal line hot spot that condenser lens 13 surfaces form after speed collimation, and its corresponding corner to the distance of condenser lens 13 is
time, if the length of described proximal line hot spot is a, wide is b, this hot spot focuses on the angle θ of fibre core 141 end faces of coupled fiber 14 through condenser lens 13
1scope is:
Concrete, as shown in Figure 9, main laser generator 111 is made up of multiple semiconductor laser chips, and the plurality of semiconductor laser chip certain distance that staggers, the light beam that described multiple semiconductor laser chip sends is after the first speed collimation lens 112, form main laser collimated light beam, described collimated light beam incides the surface of condenser lens 13, forms main spot, the light beam that pilot light generator 121 sends is after the second speed collimation lens 122, form pilot light collimated light beam, described pilot light collimated light beam incides the surface of condenser lens 13, form indication hot spot, also can utilize catoptron that main laser collimated light beam and pilot light collimated light beam are reflected into condenser lens 13 herein, main laser collimated light beam and pilot light collimated light beam after focusing on, condenser lens 13 are incided in coupled fiber 14, according to above-mentioned analysis, the main spot after coupled fiber 14 transmission be circular, and the indication hot spot after coupled fiber 14 transmission be annular, and this annular center is circular center, and described annular is by described circle encirclement, wherein, if the hot spot that the light beam that indication light source 12 sends forms on described condenser lens 13 surfaces is to the minor increment at described condenser lens 13 centers, be not less than hot spot that light beam that described primary laser source 11 sends forms on the described condenser lens 13 surfaces distance to described condenser lens 13 centers, the inside that annular after coupled fiber 14 transmission is surrounded is main laser scope, if the hot spot that the light beam that indication light source 12 sends forms on described condenser lens 13 surfaces is to the ultimate range at described condenser lens 13 centers, be not less than hot spot that light beam that described primary laser source 11 sends forms on the described condenser lens 13 surfaces distance to described condenser lens 13 centers, the inside that the scope that annular after coupled fiber 14 transmission covers and annular are surrounded is main laser scope.
In an embodiment of the present utility model, described condenser lens is any in GRIN Lens, spherical surface focusing mirror or non-spherical lens.
In an embodiment of the present utility model, the laser instrument of the annular pilot light of described generation also comprises a power supply, by this power supply to described primary laser source and described indication light source power supply; Or the laser instrument of the annular pilot light of described generation also comprises two power supplys, described primary laser source is powered by one in described power supply, by another in described power supply to described indication light source power supply; Be that the utility model can, to described primary laser source and described indication light source power supply centrally connected power supply, also can separate independently-powered to described primary laser source and described indication light source power supply.
The beneficial effect of the utility model embodiment is: by controlling respectively the hot spot of pilot light on condenser lens and the hot spot of main laser on the condenser lens distance to condenser lens center, make the hot spot of pilot light on condenser lens be not less than the distance of the hot spot of main laser on condenser lens to condenser lens center to the ultimate range at condenser lens center, like this after condenser lens focuses on, main laser is surrounded by annular pilot light, thereby the given scope of main laser, has realized the clearly division to perform region and inoperative region.
The foregoing is only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All any modifications of doing, be equal to replacement, improvement etc. within spirit of the present utility model and principle, be all included in protection domain of the present utility model.
Claims (8)
1. produce a laser instrument for annular pilot light, comprise primary laser source, indication light source and condenser lens, wherein:
The light beam that described primary laser source is sent incides respectively described condenser lens with the light beam that indication light source sends, and is focused on by described condenser lens;
The hot spot that the light beam that described indication light source sends forms on described condenser lens surface is to the ultimate range at described condenser lens center, is not less than hot spot that light beam that described primary laser source sends forms on the described condenser lens surface distance to described condenser lens center.
2. the laser instrument of the annular pilot light of generation as claimed in claim 1, is characterized in that,
The hot spot that the light beam that described indication light source sends forms on described condenser lens surface is to the minor increment at described condenser lens center, is not less than hot spot that light beam that described primary laser source sends forms on the described condenser lens surface distance to described condenser lens center.
3. the laser instrument of the annular pilot light of generation as claimed in claim 1 or 2, is characterized in that,
Described primary laser source comprises main laser generator and the first fast and slow axis collimation lens; The first fast and slow axis collimation lens, carries out fast and slow axis collimation for the light beam that described main laser generator is sent;
Described indication light source comprises pilot light generator and the second fast and slow axis collimation lens; The second fast and slow axis collimation lens, carries out fast and slow axis collimation for the light beam that described pilot light generator is sent.
4. the laser instrument of the annular pilot light of generation as claimed in claim 3, is characterized in that,
Described pilot light generator is semiconductor laser; Described main laser generator is semiconductor laser.
5. the laser instrument of the annular pilot light of generation as claimed in claim 4, is characterized in that,
Described main laser generator is multiple semiconductor laser chips, and described multiple semiconductor laser chips are staggered.
6. the laser instrument of the annular pilot light of generation as claimed in claim 1 or 2, is characterized in that, the laser instrument of the annular pilot light of described generation also comprises coupled fiber; The light beam that described coupled fiber focuses on for transmitting described condenser lens;
The light beam that described indication light source sends is non-meridional beam.
7. the laser instrument of the annular pilot light of generation as claimed in claim 1 or 2, is characterized in that, described condenser lens is any in GRIN Lens, spherical surface focusing mirror or non-spherical lens.
8. the laser instrument of the annular pilot light of generation as claimed in claim 1 or 2, is characterized in that,
The laser instrument of the annular pilot light of described generation also comprises a power supply, by this power supply to described primary laser source and described indication light source power supply; Or
The laser instrument of the annular pilot light of described generation also comprises two power supplys, described primary laser source is powered by one in described power supply, by another in described power supply to described indication light source power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636246.9U CN203673152U (en) | 2013-10-15 | 2013-10-15 | Laser capable of generating ring-shaped indication light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636246.9U CN203673152U (en) | 2013-10-15 | 2013-10-15 | Laser capable of generating ring-shaped indication light |
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| Publication Number | Publication Date |
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| CN203673152U true CN203673152U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320636246.9U Expired - Lifetime CN203673152U (en) | 2013-10-15 | 2013-10-15 | Laser capable of generating ring-shaped indication light |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513427A (en) * | 2013-10-15 | 2014-01-15 | 北京凯普林光电科技有限公司 | Laser producing annular indication light |
| CN107283071A (en) * | 2017-06-20 | 2017-10-24 | 广东电网有限责任公司东莞供电局 | It is a kind of to cut the instruction device and method that aim at for long distance laser |
| JP2019047014A (en) * | 2017-09-05 | 2019-03-22 | 株式会社島津製作所 | Semiconductor laser module |
-
2013
- 2013-10-15 CN CN201320636246.9U patent/CN203673152U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513427A (en) * | 2013-10-15 | 2014-01-15 | 北京凯普林光电科技有限公司 | Laser producing annular indication light |
| CN107283071A (en) * | 2017-06-20 | 2017-10-24 | 广东电网有限责任公司东莞供电局 | It is a kind of to cut the instruction device and method that aim at for long distance laser |
| JP2019047014A (en) * | 2017-09-05 | 2019-03-22 | 株式会社島津製作所 | Semiconductor laser module |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100070 Fengtai District science and Technology Park, Feng Feng Road, No. 4, a layer of 5 Patentee after: BWT BEIJING Ltd. Address before: 100070 Fengtai District science and Technology Park, Feng Feng Road, No. 4, a layer of 5 Patentee before: BWT Beijing Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140625 |