CN204637343U - A kind of medical laser array focus mirror - Google Patents
A kind of medical laser array focus mirror Download PDFInfo
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- CN204637343U CN204637343U CN201520081276.7U CN201520081276U CN204637343U CN 204637343 U CN204637343 U CN 204637343U CN 201520081276 U CN201520081276 U CN 201520081276U CN 204637343 U CN204637343 U CN 204637343U
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Abstract
This utility model relates to a kind of medical laser array focus mirror, comprise multi-beam splitter, condenser lens, spacing between multi-beam splitter and condenser lens are limited by cage ring, multi-beam splitter is a binary optical elements made based on Dammam (Dammann) periodic phase grating principle, laser is divided into the uniform dot matrix laser of multi beam Energy distribution by multi-beam splitter, and laser beam focus is become parallel dot matrix laser beam by condenser lens.This utility model has simple and compact for structure, diffraction efficiency is high, the advantage of homogenize laser beam, be applied in medical and beauty treatment industry, this medical laser array focus lamp and medical laser treatment instrument with the use of, utilize laser to treat human body skin, effectively can control the zone of action of laser and illing skin flexibly, drastically increase the safety for the treatment of.
Description
Technical field
This utility model relates to medical laser array focus mirror.
Background technology
Along with the development of laser technology, one brand-new, and application branch of learning---laser medicine is progressively formed, and the particular advantages of laser, solves traditional medicine indeterminable many difficult problems in basic research and clinical practice, cause the attention of domestic and international medical circle.
And laser beam focuses on by direct employing conventional focusing lens conventional Q-switch (as the electric-optically Q-switched) laser therapeutic head of medical treatment at present, spatially form the laser beam of pyramid type distribution, treat time can present laser energy excessively weak, cross strong and invalid three kinds of effects, laser energy is crossed and skin can be made by force to sustain damage; But energy is crossed and weak and invalidly do not had therapeutic effect again, and common focus lamp can form defocused spot, make to penetrate shallow, subcutaneous Energy distribution is uneven; Often there is damage surface large, therapeutic effect is not remarkable, the shortcomings such as healing time is longer, and safety is relatively little.Medical treatment dot matrix laser can produce the uniform dot matrix laser beam of multi beam Energy distribution, and have and penetrate deeply, therapeutic effect is remarkable, and side effect is little, the advantage that healing time is short.
But the medical dot matrix laser of high repetition frequency (be generally quasi-continuous or export continuously) adopts scanning galvanometer to carry out scanning focused to laser beam usually, and be not directly carry out beam splitting to laser beam, cost is relatively high.And because scanning galvanometer frequency of vibration is relatively high, for comparatively low-repetition-frequency, the medical laser treatment instrument (as electro-optical Q-switch laser) of short pulse duration is also inapplicable.
Utility model content
The purpose of this utility model is the deficiency overcoming above-mentioned laser condensing lens and scanning galvanometer, provides a kind of medical laser array focus mirror.
The technical scheme that this utility model adopts is: a kind of medical laser array focus mirror, comprise multi-beam splitter, condenser lens, described multi-beam splitter and condenser lens are coaxially arranged along laser direction of transfer, between described multi-beam splitter and condenser lens, be provided with the cage ring of restriction spacing therebetween, described multi-beam splitter is a two-dimentional binary optical elements made based on Dammam periodic phase grating principle.
Medical laser array focus mirror of the present utility model have simple and compact for structure, angle of diffraction is little, diffraction efficiency is high, be arranged in laser therapeutic head with medical laser treatment instrument with the use of, because laser is divided into the uniform dot matrix laser of multi beam Energy distribution by multi-beam splitter, laser beam focus is become parallel dot matrix laser beam by condenser lens, can the parallel dot matrix laser beam that is evenly distributed of forming energy, therapeutic effect is remarkable, side effect is little, security performance is high, and can be applicable to continuous, quasi-continuous and pulse laser therapeutic instrument simultaneously.
Preferred technical scheme of the present utility model comprises: multi-beam splitter, for etching the binary optical elements with 4 ledge structures in optical glass substrate.Shoulder height is 0-15 μm.
Multi-beam splitter, for dividing the multi-beam splitter of quadrate, rectangle, circle or oval dot matrix laser beam by laser beam.
Condenser lens is a biconvex condenser lens, also can be planoconvex condenser lens, and condenser lens is thoroughly high near optical maser wavelength.Condenser lens 3 is the biconvex lens of a slice Ф 20 × 3mm, focal distance f=50mm, and lens two sides is all coated with laser anti-reflection film.Described condenser lens is thoroughly high near optical maser wavelength.
Below with reference to drawings and Examples, this utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is optical system structure schematic diagram of the present utility model.
Fig. 2 is multi-beam splitter section configuration schematic diagram.
Fig. 3 is the embodiment schematic diagram that this utility model is applied in skin treating.
Being denoted as in accompanying drawing: 1-multi-beam splitter, 2-cage ring, 3-condenser lens, 4-hot spot, 5-skin.
Detailed description of the invention
Embodiment 1, as shown in Figure 1, the present embodiment is a kind of medical laser array focus mirror, also referred to as medical laser dot matrix focus lamp, is suitable for continuous, quasi-continuous and pulse laser therapeutic instrument.This focus lamp is made up of two major parts: multi-beam splitter 1 and condenser lens 3, multi-beam splitter 1 is in the upstream of condenser lens 3, in upstream, laser is divided into the uniform dot matrix laser beam of multi beam Energy distribution by multi-beam splitter 1, at downstream condenser lens 3, laser beam focus is become parallel dot matrix laser beam, can the parallel dot matrix laser beam that is evenly distributed of forming energy.
The cage ring 2 be made of plastics also is provided with in multi-beam splitter 1 and condenser lens 3, cage ring 2 can be used for limiting the distance between multi-beam splitter 1 and condenser lens 3, also limit the relative position between multi-beam splitter 1 and condenser lens 3, to ensure that multi-beam splitter 1 and condenser lens 3 are coaxially arranged simultaneously.
In the present embodiment, multi-beam splitter 1 is a two-dimentional binary optical elements made based on Dammam (Dammann) periodic phase grating principle.Dammann grating is the two-value phase grating with special aperture function, be the isocandela hot spot of certain dot matrix number to the Fraunhofer diffraction pattern of incident light wave generation, completely avoid each spectral line point light intensity uneven distribution of general amplitude grating caused by sinc function intensity envelope.
At present, usually have two kinds of methods to obtain Dammann type two-dimensional phase grating, a kind of method is carried out being extended to two-dimensional phase grating on x, y direction by one dimension two-value phase grating, and phase angle at different levels is at x, and by One-Dimensional Extended in y-axis, but the method diffraction efficiency is lower.Another kind method directly on two dimensional surface, carries out the search of optimum angle change point to obtain better two-value phase grating, one-period unit is made to form grid type aperture, the PHASE DISTRIBUTION of this unit by each circular aperture, (can select by aperture shape, for circular in the design) PHASE DISTRIBUTION of unit determines jointly, with this, each circular aperture unit value 0 or 1, represents that respective phase is 0 or π; This method can improve diffraction efficiency significantly.In the present embodiment, multiple beam beam splitter 1 designs and produces according to second method, and design and fabrication step is: theoretical optimization calculates, mask, gluing, photoetching, etching.
In the present embodiment, multi-beam splitter 1 is one etch in optical glass substrate and have 4 ledge structures, and as shown in Figure 2, wherein shoulder height is 0-15 μm.
Multi-beam splitter 1, can divide quadrate 4 by laser beam, and the dot matrix laser beam of the shape such as rectangle, circle, ellipse.
In the present embodiment, condenser lens 3 is biconvex condenser lens, thoroughly high near optical maser wavelength, does up converging action to laser.Cage ring 2 is adopted made of plastic, not only can reduce costs, and can also play effective protection to optics simultaneously.
Operation principle of the present utility model: first install multi-beam splitter 1 successively according to the order shown in Fig. 1, cage ring 2, convergent lens 3.Condenser lens 3 adopts at saturating condenser lens high near optical maser wavelength.Described medical laser array (dot matrix) focus lamp is arranged in laser therapeutic head, the present embodiment is described in detail for medical Q-switch ruby laser treatment instrument, multi-beam splitter 1 is the Dammann type grating of a slice shoulder height 9.13 μm, Ф 20 × 2mm, angle of diffraction 0.57 °, diffraction efficiency can reach 80.5%, laser beam can be made to form the binary optical components and parts of 15 × 15 dot matrix of circular light spot 4, as shown in Figure 3.Condenser lens 3 is a slice Ф 20 × 3mm, the biconvex lens of focal distance f=50mm, lens two sides is all coated with 694nm laser anti-reflection film, after opening Q-switch ruby laser treatment instrument, it is equal that laser beam will be divided into 225 beam intensities by multi-beam splitter 1, and the light beam of energy even distribution, forms square dot matrix laser beam, become parallel laser light beam through condenser lens 3 post-concentration, act on the skin 5 in patient affected part.
The thickness of laser anti-reflection film is 0.25 times of laser work wavelength, the thick anti-reflection film thickness of different operating wavelength differs, adopt 694nm laser anti-reflection film to be laser work wavelength in the present embodiment, in order to be suitable for multiple optical maser wavelength, the thickness of general laser anti-reflection film is 0.25 times of laser work wavelength.
Described in above embodiment is a kind of preferred implementation of the present utility model, should be understood that, for this utility model person of an ordinary skill in the technical field, under the prerequisite not departing from this utility model principle, some improvements and modifications can also be made, this utility model is also applicable to and adjust Q medical laser treatment instrument, non-tune Q medical laser treatment instrument, working method can be continuously, quasi-continuous and pulse mode, as Q-switch YAG laser therapeutic apparatus, CO
2laser therapeutic apparatus, optical-fiber laser therapeutic instrument etc., these improvements and modifications also can be considered protection domain of the present utility model.
Claims (8)
1. a medical laser array focus mirror, comprise multi-beam splitter, condenser lens, described multi-beam splitter and condenser lens are coaxially arranged along laser direction of transfer, the cage ring of restriction spacing is therebetween provided with between described multi-beam splitter and condenser lens, it is characterized in that, described multi-beam splitter is a two-dimentional binary optical elements made based on Dammam periodic phase grating principle.
2. medical laser array focus mirror according to claim 1, is characterized in that: described multi-beam splitter, for etching the binary optical elements with 4 ledge structures in optical glass substrate.
3. medical laser array focus mirror according to claim 2, is characterized in that: described shoulder height is 0-15 μm.
4. medical laser array focus mirror according to claim 1, is characterized in that: described multi-beam splitter, for laser beam being divided the multi-beam splitter of quadrate, rectangle, circle or oval dot matrix laser beam.
5., according to described medical laser array focus mirror arbitrary in Claims 1-4, it is characterized in that: described condenser lens is a biconvex condenser lens, also can be planoconvex condenser lens.
6. medical laser array focus mirror according to claim 5, is characterized in that: described condenser lens is the biconvex lens of a slice Ф 20 × 3mm, focal distance f=50mm, and lens two sides is all coated with laser anti-reflection film.
7. medical laser array focus mirror according to claim 5, is characterized in that: the thickness of described laser anti-reflection film is 0.25 times of laser work wavelength.
8. according to described medical laser array focus mirror arbitrary in Claims 1-4, it is characterized in that: described condenser lens is thoroughly high near optical maser wavelength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520081276.7U CN204637343U (en) | 2015-02-05 | 2015-02-05 | A kind of medical laser array focus mirror |
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| CN201520081276.7U CN204637343U (en) | 2015-02-05 | 2015-02-05 | A kind of medical laser array focus mirror |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725845A (en) * | 2017-03-09 | 2017-05-31 | 海南瑞韩医学美容医院管理有限公司海口龙华京华城红妆医学美容门诊部 | A kind of CO2Laser therapy hand tool |
| US10914942B2 (en) | 2017-12-14 | 2021-02-09 | Avava, Inc. | Electromagnetic radiation beam scanning system and method |
| CN115113409A (en) * | 2022-08-26 | 2022-09-27 | 成都莱普科技股份有限公司 | Linear flat-top light spot generation system, method and equipment based on Dammann grating |
-
2015
- 2015-02-05 CN CN201520081276.7U patent/CN204637343U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725845A (en) * | 2017-03-09 | 2017-05-31 | 海南瑞韩医学美容医院管理有限公司海口龙华京华城红妆医学美容门诊部 | A kind of CO2Laser therapy hand tool |
| CN106725845B (en) * | 2017-03-09 | 2023-05-09 | 海南红妆美容管理有限公司 | CO2 laser treatment hand utensil |
| US10914942B2 (en) | 2017-12-14 | 2021-02-09 | Avava, Inc. | Electromagnetic radiation beam scanning system and method |
| US10914941B2 (en) | 2017-12-14 | 2021-02-09 | Avava, Inc. | Electromagnetic radiation beam scanning system and method |
| CN115113409A (en) * | 2022-08-26 | 2022-09-27 | 成都莱普科技股份有限公司 | Linear flat-top light spot generation system, method and equipment based on Dammann grating |
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