CN105842835A - Design scheme of microscope with built-in light guide optical fiber - Google Patents
Design scheme of microscope with built-in light guide optical fiber Download PDFInfo
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- CN105842835A CN105842835A CN201610385190.2A CN201610385190A CN105842835A CN 105842835 A CN105842835 A CN 105842835A CN 201610385190 A CN201610385190 A CN 201610385190A CN 105842835 A CN105842835 A CN 105842835A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
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Abstract
The invention discloses a design scheme of a microscope with a built-in light guide optical fiber. The microscope is mainly composed of a light source, the light guide optical fiber, a lens cone and an objective lens. The light guide optical fiber is tightly attached to the inner wall of the lens cone; one end of the light guide optical fiber is mechanically connected with the light source; the objective lens is arranged below the other end of the light guide optical fiber; and light emitted out from the light guide optical fiber passes through the objective lens and irradiates on an observed object. With the design scheme adopted, light utilization rate can be improved, the heat of a system is reduced, and the service life of the system is prolonged. Compared with a traditional coaxial illumination microscope, the microscope designed by using the design scheme has the advantages of high brightness and low cost. Compared with illumination microscopes on the market, the microscope designed by using the design scheme has the advantages of simple structure and simple production process.
Description
Technical field
The present invention relates to microscope field, a kind of built-in light conducting optical fiber is with the microscope of illuminator.
Background technology
In the modern life, microscopical application is more and more extensive.Microscopical light source is divided into nature light and electric light source two kinds, and during owing to seeing object by microscope under natural light, illuminance is dark, it is impossible to observes object well, therefore occurs in that electric light source microscope on the market.
Electric light source microscope has two kinds the most on the market, and one is to have electric light source system inside it, and the microscopical base of electric light source is mostly square, and illuminating lamp, condenser lens, illuminator and illuminator circuit etc. are all contained in its microscope base.This microscopical lighting system is from bottom to top or from the outside side lighting of object lens, but this microscope has a following defect: 1. entering into the light of lens barrel by object lens the most weak, lighting effect is poor；2. human eye sees that object stereovision and third dimension are poor；3. limited because of base area, limit the volume of light-source system, it is difficult to use high power light source to be illuminated, the object that some reflectance are less is difficult to examine.
Another kind of electric light source microscope is to utilize semi-transparent semi-reflecting lens to reach the microscope of axis light illuminating effect.At microscope lens barrel positioned inside semi-transparent semi-reflecting lens, the light that light source sends arrives on semi-transparent semi-reflecting lens through diffuser, semi-transparent semi-reflecting lens is commonly called as spectroscope, and from diffusive reflective film, a light part out is through semi-transparent semi-reflecting lens, and another part reflexes to object from semi-transparent semi-reflecting lens；A reflection light part for object enters eyepiece through semi-transparent semi-reflecting lens, and remainder is reflected away by semi-transparent semi-reflecting lens, and the part that the light that light source sends is utilized is less than 1/4.This microscope has the highest requirement to semi-transparent semi-reflecting lens quality, semi-transparent semi-reflecting lens defect rate in process of production is higher, semi-transparent semi-reflecting lens cost is the highest, the installation accuracy of semi-transparent semi-reflecting lens is required height simultaneously, it is low that this scheme has light utilization efficiency, and energy consumption is high, and structure is complicated, cost is high, the defect that heat radiation is difficult.
Application No. CN201520175821.9, the Chinese patent of entitled " a kind of darkfield microscope optical fiber source ", it is that fixing seat is fixed on darkfield microscope base top surface, fixing seat offers fixing groove, light source output terminal is placed in fixing groove, fixed plate is threaded connection the cervical region laminating of part and described smooth source output terminal, the device that the light source input of light-conductive optic fibre is connected with external light source.Program structure is complicated, irradiates visual field area little.
Therefore, be applicable to microscopical illumination, prior art there is problems in that light utilization efficiency is low, and energy consumption is high, and structure is complicated, and cost is high, heat radiation difficulty, irradiates visual field area little.Needing light utilization efficiency badly high, good illumination effect, production technology is simple, simple in construction, and the illumination structure of low cost is applied in microscope observation.
Summary of the invention
In order to solve the problems referred to above, the invention discloses the microscope designs scheme of a kind of built-in light conducting optical fiber.
The present invention solves the problems referred to above by following method:
The microscope designs scheme of a kind of built-in light conducting optical fiber, containing light source, lens barrel, light-conductive optic fibre, object lens；Light-conductive optic fibre on lens barrel inwall is pasted, the illumination light that light source sends enters in light-conductive optic fibre, illuminating ray is along lens barrel inwall travel downward in light-conductive optic fibre, and light-conductive optic fibre other end light out is certain subtended angle, is irradiated on observed object through object lens.
Light-conductive optic fibre is by SiO2Or high polymer is made, i.e. quartz or plastics are made, and have heatproof height, stable performance, the advantage of low cost, and it is arranged around lens barrel inwall.
Such structure, compared with microscope on the market, has light utilization efficiency high, and energy consumption is low, simple in construction, and production technology is simple, low cost, and heat dispersion is excellent, cheap, service life the advantage such as length.
Accompanying drawing explanation
Fig. 1 is the part index path of conventional coaxial light microscope.
Fig. 2 is light path schematic diagram of the present invention.
Fig. 3 is the schematic diagram of light source in embodiment.
Fig. 4 is a kind of arrangement mode of light-conductive optic fibre.
Fig. 5 is the another kind of arrangement mode of light-conductive optic fibre.
Fig. 6 is to use tracepro software simulation microscope part index path.
Fig. 7 is simulation light path range of exposures and illuminance contour map on tested platform.
1. eyepiece, 2. radiator, 3. diffusion barrier, the most semi-transparent semi-reflecting lens, 5. baffle, 6. object lens and observed object, 7. light source, 8. lens barrel upper end, 9. lens barrel inwall, 10. light-conductive optic fibre, 11. light, 12. light-conductive optic fibre light inlets, 13. lens barrel outer walls, 14. object lens, the illumination zone that 15. light are formed on tested platform.
Specific embodiments
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
Fig. 1 is a kind of microscopes optical path schematic diagram using axis light to illuminate of main flow the most on the market, from diagram light path: program optical design is motivated, and the circle area of bottom is object lens and observed object；The light that light source sends arrives half-reflecting half mirror, repeatedly acts on through half-reflecting half mirror and eyepiece, and the part that the light that light source sends is utilized is less than 1/4；And half-reflecting half mirror defect rate in manufacturing process is higher, cost is high；The shortcoming that operation easier is big is there is in installation process；The defects such as it is low that this microscope can exist light utilization efficiency, and energy consumption is high, and structure is complicated, and cost is high, and heat radiation is difficult.
Fig. 2 is light path schematic diagram of the present invention, and the circular area that in figure, dotted line surrounds is illumination zone.The light inlet of light-conductive optic fibre connects with light source machinery, and because light-conductive optic fibre has an effect of guide property to the propagation of light, therefore the light that sends of light source reaches the lower end of light-conductive optic fibre through light-conductive optic fibre light inlet；The light that light-conductive optic fibre lower end sends is irradiated on object through object lens, is entered the intensity of illumination of light-conductive optic fibre light inlet by regulation, can change the illuminance of illuminated body surface, observer will not be allowed to have the sensation of any discomforts such as dazzling dizziness.The circle that in Fig. 2, dotted line surrounds is the illumination zone that light is formed on tested platform.
Light-conductive optic fibre, actually optical fibers, be a kind of to utilize light total reflection principle and light conduction instrument of making in quartz or the fiber made of plastics.By light-conductive optic fibre, light being sent to people needs the place of light to be illuminated, and the feature of light-conductive optic fibre is that optical fiber footpath is thin, lightweight, it is easy to lay, ornamental strong；The raw material resources of light-conductive optic fibre enriches, low cost；Stable performance, heatproof is high, and fidelity is high, and the life-span is long；And in the communication process that light is in light-conductive optic fibre, the luminous energy of loss is few.
The advantages such as in embodiment, LED light source is placed in the top of lens barrel, and the advantage that LED compares with fluorescent lamp is apparent from, and it is obvious that LED has energy-saving effect, and thermal diffusivity is strong, pollution-free environmental protection, and light efficiency is high, volume is little, easy to use.
A kind of light source that Fig. 3 is to cooperate with light-conductive optic fibre placement in Fig. 4 lens barrel and designs, containing LED, covers copper aluminium base, annular lamp tube；LED is welded in and covers on copper aluminium base, and the one layer of heat-conducting silicone grease of back side uniform application covering copper aluminium base is easy to heat radiation；LED is positioned in annular lamp tube with covering copper aluminium base；Annular lamp tube is made up of front and back's two parts, and the semicircle curved surface lampshade that the half near LED front is made up of PBT and glass, the annular lamp tube deviating from LED light-emitting area is made of metal；Annular lamp tube can allow light complete multiple reflections in lampshade, and the light making LED send as far as possible is uniformly penetrated by annular lamp tube.
Annular lamp tube is fixed on the top of lens barrel, and light enters the light inlet of light-conductive optic fibre, and the light-conductive optic fibre other end flushes with lens barrel lower port；Light-conductive optic fibre has the effect of guide property to the propagation of light, and light penetrates through lens lighting on observed object from light-conductive optic fibre.This simple in construction, low cost, it is ensured that thermal diffusivity and the service life of light source.
Light-conductive optic fibre also has a various ways in the package assembly of eyepiece lens barrel inwall:
Fig. 4 is a kind of arrangement mode of light-conductive optic fibre: light-conductive optic fibre is arranged along lens barrel generatrix direction, one layer of light-conductive optic fibre is pasted equably in lens barrel inner wall surface, this modes of emplacement of light-conductive optic fibre is applicable to the light source of annular lamp tube, the annular lamp tube of especially Fig. 3, the light inlet of light-conductive optic fibre is mechanically connected with light source, and the other end flushes with lens barrel lower port；Lens lighting is passed through on observed object from light-conductive optic fibre light out.The fiber optic fiber that the light-conductive optic fibre that the present embodiment is used is made up of quartz, its a diameter of 2.0mm, the thinnest optical fiber can increase difficulty when being glued to lens barrel inwall with optics, and light-emitting uniformity is had a certain impact by the thickest optical fiber.
Fig. 5 is the another kind of arrangement mode of light-conductive optic fibre: be pasted onto lens barrel inwall with light-conductive optic fibre, light-conductive optic fibre surrounds circle along inwall and spirals until lens barrel lower end port, the light inlet of light-conductive optic fibre and light source are mechanically connected, being removed towards the crust of object lens part by the last lap of the light-conductive optic fibre that spirals, light can penetrate uniformly.Place object lens in lens barrel lower end, such light just can be irradiated on observed object through object lens.
In the arrangement mode of above-mentioned two light-conductive optic fibre: the light that light source sends is realized the effect guiding light to propagate by light-conductive optic fibre.The rays pass through lens of light-conductive optic fibre lower end injection is irradiated on observed object.
Fig. 6 is the microscope part index path of simulation in tracepro, and the light source of simulation uses the annular lamp tube in Fig. 3, and light-conductive optic fibre uses the modes of emplacement of Fig. 4；Light source is positioned over the upper end port of lens barrel, and the length of lens barrel is 160mm, places object lens (lens and lens barrel lower end port separation distance are from fine-tuning) in lens barrel lower end, and the semiaperture of object lens is 5mm；At distance object lens 5mm, place an optical screen replace object stage；The light that light source is sent is reached lens barrel lower end by light-conductive optic fibre, and light is then passed through lens lighting to observed object.As seen from Figure 7, light is radiated at the illuminance on optical screen (object stage) and irradiated area.The center brightness being radiated at optical screen (object stage) is about 500W/M2, when radius is on 8mm circumference, 200 W/M are reduced in brightness2, on the circumference that radius is 15mm, brightness is about 50 W/M2；By the effect simulated it can be seen that light is utilized fully by the program, range of exposures is big.
The principle of above-described embodiment only illustrative present invention and effect, for the person of ordinary skill of the art, on the premise of without departing from the innovation thinking of the present invention, it is also possible to the some deformation made and improvement, these broadly fall into the protection domain of the application.
Claims (2)
1. a microscope designs scheme for built-in light conducting optical fiber, is characterized in that: containing light source, lens barrel, light-conductive optic fibre, object lens；Light-conductive optic fibre on lens barrel inwall is pasted, the illumination light that light source sends enters in light-conductive optic fibre, illuminating ray is along lens barrel inwall travel downward in light-conductive optic fibre, and light-conductive optic fibre other end light out is certain subtended angle, is irradiated on observed object through object lens.
The microscope designs scheme of a kind of built-in light conducting optical fiber the most according to claim 1, is characterized in that: light-conductive optic fibre is by SiO2Or high polymer is made.
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| CN201610385190.2A CN105842835B (en) | 2016-06-03 | 2016-06-03 | Microscope design scheme with built-in light guide optical fiber |
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| CN201610385190.2A CN105842835B (en) | 2016-06-03 | 2016-06-03 | Microscope design scheme with built-in light guide optical fiber |
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| CN105842835B CN105842835B (en) | 2020-02-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291938A (en) * | 1978-02-12 | 1981-09-29 | International Business Machines Corporation | Apparatus for dark field illumination |
| US4329015A (en) * | 1978-09-25 | 1982-05-11 | Designs For Vision, Inc. | Apparatus for increasing the input light intensity to a microscope |
| US5570228A (en) * | 1991-04-19 | 1996-10-29 | Edge Scientific Instrument Company Llc | Fiber optic illumination system and method for a high definition light microscope |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN1928616A (en) * | 2006-09-26 | 2007-03-14 | 河北工业大学 | Transmission illumination system for optical microscope and optical microscope using same |
| CN201867534U (en) * | 2010-11-02 | 2011-06-15 | 浙江建设职业技术学院 | Portable microscope |
| CN104698581A (en) * | 2015-03-20 | 2015-06-10 | 麦克奥迪实业集团有限公司 | Lighting device, stereoscopic microscope and lighting method for stereoscopic microscope |
-
2016
- 2016-06-03 CN CN201610385190.2A patent/CN105842835B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4291938A (en) * | 1978-02-12 | 1981-09-29 | International Business Machines Corporation | Apparatus for dark field illumination |
| US4329015A (en) * | 1978-09-25 | 1982-05-11 | Designs For Vision, Inc. | Apparatus for increasing the input light intensity to a microscope |
| US5570228A (en) * | 1991-04-19 | 1996-10-29 | Edge Scientific Instrument Company Llc | Fiber optic illumination system and method for a high definition light microscope |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN1928616A (en) * | 2006-09-26 | 2007-03-14 | 河北工业大学 | Transmission illumination system for optical microscope and optical microscope using same |
| CN201867534U (en) * | 2010-11-02 | 2011-06-15 | 浙江建设职业技术学院 | Portable microscope |
| CN104698581A (en) * | 2015-03-20 | 2015-06-10 | 麦克奥迪实业集团有限公司 | Lighting device, stereoscopic microscope and lighting method for stereoscopic microscope |
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