CN101819322B - Digital magnifier - Google Patents
Digital magnifier Download PDFInfo
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- CN101819322B CN101819322B CN 201010157774 CN201010157774A CN101819322B CN 101819322 B CN101819322 B CN 101819322B CN 201010157774 CN201010157774 CN 201010157774 CN 201010157774 A CN201010157774 A CN 201010157774A CN 101819322 B CN101819322 B CN 101819322B
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- lens barrel
- lens
- digital magnifier
- cmos component
- lock collar
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Abstract
The invention provides a digital magnifier which can obtain uniform illumination by utilizing natural light and have high resolution imaging, convenient use and no need of light source. The digital magnifier comprises a lens barrel provided with an objective lens and CMOS components arranged at the rear end of the lens barrel; a condenser lens which is used for casting rays on the surface of observed objects is arranged on the front end of the lens barrel; the rear end part of the condenser lens is connected with the periphery of the lens barrel, and the front end of the condenser lens extends out of the lens barrel; the external surface and the internal surface of the condenser lens are both aspheric surfaces; and the CMOS components, the lens barrel, the objective lens and the condenser lens are arranged on the same axis fromup and down.
Description
Technical field
The present invention relates to a kind of digital magnifier.
Background technology
At present, known hand magnifying glass can only be observed by human eyes, and imaging definition is low, and aberration is serious, not to observing the function that image is taken, stored and transmits.
The hand-held digital magnifier of having announced is equipped with the LED lighting source in the lower end of its object lens light path; Through hand-held mode the object lens of digital magnifier aim at the object that will observe; (for example enter into imageing sensor through behind the optical system imaging; Cmos component), by the input of the USB interface on digital magnifier computing machine, realize demonstration, shooting, storage and transfer function.Yet their weak point also is significantly, the one, and the hand-held digital magnifier is equipped with the LED lighting source, has increased the complexity and the production cost of structure.The 2nd, the irradiate light that LED sends is on the object that is observed; Must form bright hot spot in the illuminated central area of object; Get into the digital magnifier optical system after reflection; So the subject image on the computer display just has very significantly speck image, it has seriously disturbed the resolution to actual object digital image details.The 3rd, hand-held digital magnifier shape is as pen, in use as holding a pen the object that its front end aligning is observed; Because minimum photographic distance is very short; The depth of field is less, and the visual field is less, and hand is unstable; Be difficult for accurately control minimum photographic distance, cause the digital image sharpness relatively poor easily.
Summary of the invention
The purpose of this invention is to provide a kind of available light that utilizes and obtain evenly illumination, and can blur-free imaging, easy to use, need not the digital magnifier of lighting source.
This digital magnifier comprises lens barrel that object lens are housed and the cmos component that is arranged on the lens barrel rear end, is provided with at the front end of lens barrel to be used for the collector lens of ray cast to the body surface that is observed; The peripheral part of collector lens rearward end and lens barrel joins, and the collector lens front end stretches out lens barrel; Collector lens outer surface and inner surface are aspheric surface; Cmos component, lens barrel, object lens, collector lens are arranged in up and down on the same axis.
Beneficial effect of the present invention: the present invention has adopted outer surface and inner surface to be aspheric collector lens; With the most of ray cast that sees through collector lens to the body surface that is observed; Thereby saved independent to being observed the light source of object illumination; Illuminated zone can not form bright hot spot, and subject image does not just have the speck image, and is more clear to the resolution of actual object digital image details.During use, the front end face of collector lens is placed on the periphery that is observed object, is observed object in the zone that collector lens and lens barrel surrounded, and is easy to use, need not to hand.
Above-mentioned digital magnifier, the outside surface of lens barrel peripheral part, the collector lens inner surface relative with the outside surface of lens barrel peripheral part are all tapered, and gapped between said two conical surfaces; Project the part light on the outside surface of lens barrel peripheral part, after the repeatedly reflection between two conical surfaces, project the body surface that is observed.Like this, can there be more rays to project the body surface that is observed, can obtains distinct image more.
Above-mentioned digital magnifier, the outside surface of lens barrel peripheral part are metal polish surface, after the metal polish surface receives the light that the collector lens inner surface relative with the outside surface of lens barrel peripheral part see through, change the incident direction of light through reflection.
Above-mentioned digital magnifier, the inner surface that stretches out the collector lens of lens barrel is a matte surface.Matte surface makes light form scattering, and light is even, can not occur that some place is bright, some local dark phenomenon, and like this, the object that is observed is the brightness basically identical everywhere.
Above-mentioned digital magnifier, lens barrel rear end and cmos component are provided with the focusing lock collar through being threaded between lens barrel and cmos component, focusing lock collar and lens barrel are through being threaded; When rotating the focusing lock collar, the focusing lock collar can move and contact with cmos component along said axis.During use, rotate lens barrel or cmos component earlier, make that the relative position between lens barrel or the cmos component changes, carry out the precision focusing; Accomplish back (keep lens barrel motionless) when focusing and rotate the focusing lock collar, make the said axis in focusing lock collar edge move and contact (compressing cmos component) with cmos component; Make lens barrel firmly be connected, put glue then, to guarantee the imaging definition after the digital magnifier precision is focused with cmos component.Certainly, but also lens barrel rear end and cmos component are provided with the focusing lock collar through being threaded between lens barrel and cmos component, and focusing lock collar and cmos component are through being threaded; When rotating the focusing lock collar, the focusing lock collar can move and contact with lens barrel along said axis.Its principle of work and roughly the same aforementioned: during use, rotate lens barrel or cmos component earlier, make that the relative position between lens barrel or the cmos component changes, carry out the precision focusing; Accomplish back (keep cmos component motionless) when focusing and rotate the focusing lock collar, make the said axis in focusing lock collar edge move and contact (compressing lens barrel) with lens barrel; Make lens barrel firmly be connected, put glue then, to guarantee the imaging definition after the digital magnifier precision is focused with cmos component.
Above-mentioned digital magnifier, the front end of lens barrel and collector lens are through being threaded.Like this, rotate the minimum photographic distance that collector lens can be regulated digital magnifier, with reach imaging clear with illumination evenly, regulate and accomplish the back and put glue and fix and guarantee that minimum photographic distance is constant.
Above-mentioned digital magnifier, the object space of object lens are telecentric beam path.Like this, the present invention promptly adopts object space telecentric beam path design system, and it is big to make object space observe the visual field, and system's enlargement ratio is high.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an exploded perspective view of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1, the digital magnifier shown in 2; Eyeglass 4, spacer ring 5, eyeglass 6, spacer ring 7, eyeglass 8, spacer ring 9, eyeglass 10, spacer ring 11, eyeglass 12 lens barrel 3 of packing into successively; Screw in lens barrel 3 with the fixing integral body of forming that is threaded with trim ring 13, lens barrel inside is carried out eliminate stray light and is handled.Eyeglass 4, spacer ring 5, eyeglass 6, spacer ring 7, eyeglass 8, spacer ring 9, eyeglass 10, spacer ring 11, eyeglass 12 etc. have been formed object lens.
It is top to be threaded that next focusing lock collar 2 is spun on lens barrel 3, screws in lens barrel 3 upper ends in cmos component 1 internal thread again, and the focusing lock collar 2 of screwing is threaded lens barrel 3 and cmos component 1 usefulness fixing.Top (the lens barrel front end peripheral part) that be spun on lens barrel 3 front ends to collector lens 14 at last is to be threaded; The collector lens front end stretches out lens barrel.The outside surface 31 of lens barrel front end peripheral part, the collector lens inner surface 141 relative with the outside surface of lens barrel front end peripheral part are all tapered, and between said two conical surfaces gapped 15.Project the part light on the outside surface of lens barrel front end peripheral part, after the repeatedly reflection between two conical surfaces, project the body surface that is observed.The collector lens inner surface 142 that stretches out lens barrel is matte surface.The outside surface 31 of lens barrel front end peripheral part is the metal polish surface.Cmos component and USB interface (not shown) join.
Collector lens adopts the optical plastic injection mo(u)lding to process; Its outer surface 143 and inner surface (comprising collector lens inner surface relative with the outside surface of lens barrel front end peripheral part 141 and the collector lens inner surface 142 that stretches out lens barrel) are aspheric surface; Outer surface 143 has all reached the requirement of optical mirror plane with (relative with the outside surface of lens barrel front end peripheral part) surfaceness of collector lens inner surface 141; Have the ability of collecting and assembling extraneous available light, make collector lens inner circular zone 16 form evenly illumination.During use, the front end face of collector lens is placed on the periphery that is observed object, is observed object in the border circular areas 16 that collector lens and lens barrel surrounded, and is easy to use, need not to hand.
Cmos component, lens barrel, eyeglass, collector lens are arranged in up and down on the same axis in this digital magnifier; Be placed directly in digital magnifier on the object that is observed; Collector lens can be collected extraneous available light makes the object that is observed evenly throw light on; Through the position of mobile digital magnifier, its optical system on cmos component, is directly imported computing machine through USB interface with viewed object image-forming; On computer screen, can observe the digital image of amplification, and can realize functions such as shooting, storage and printing.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention is placed directly on the object that is observed; Position through the mobile digital magnifier; Its optical system with viewed object image-forming on cmos component; Directly import computing machine through USB interface, on computer screen, can observe the digital image of amplification, and can realize functions such as shooting, storage and printing.
After collector lens is contained in the lens barrel front end; Collected extraneous most of available light projects the surface that is observed object; Some projects the lens barrel light on the reflecting slant (being conical outer surface 31) foremost; After the repeatedly reflection between collector lens inner surface 141 and the lens barrel reflecting slant, finally also can effectively project the body surface that is observed, reach full and uniform illuminating effect.Optical plastic collector lens profile such as bowl-shape; The bowl end, be connected with lens barrel through screw thread; The rim of a bowl is placed directly in the body surface that is observed, and collector lens outer surface and inner surface are aspheric surface can effectively collect extraneous available light, and major part projects the body surface that is observed.What meanwhile lens barrel screwed in collector lens inside is the inclined-plane of ability reflection ray foremost; And keep certain distance with the collector lens inner surface; Project lens barrel a part of light foremost through behind the collector lens; After repeatedly reflecting between collector lens inner surface and the lens barrel inclined-plane foremost, also can effectively project on the body surface that is observed, thereby utilize luminous energy fully to reach uniform illuminating effect.
There are two place's external threads the lens barrel rear end, and place's external thread is connected with the cmos component internal thread, can carry out the precision focusing after the rotation; Another place's external thread is connected with the focusing lock collar, and backward rotation focusing lock collar after focusing is accomplished makes lens barrel firmly be connected with cmos component and some glue, with the imaging definition after the accurate focusing of assurance digital magnifier.Digital magnifier is fixedly connected lens barrel through the focusing lock collar after accomplishing accurate focusing with cmos component, make the last end face of lens barrel constant all the time to the distance of cmos component imaging surface, to guarantee the imaging definition in the use.
Lens barrel is through the collector lens that is threaded; The external thread of lens barrel front end is connected with optical plastic collector lens internal thread; Rotate the minimum photographic distance that the optical plastic collector lens can be regulated digital magnifier, adjustment process is to reach the clear and uniform purpose of illumination of imaging, and some glue was fixed after adjusting was accomplished; Face is constant all the time to the distance on the surface that is observed object foremost to make lens barrel, i.e. keep minimum photographic distance constant in the use process.Make that digital image is clear all the time fuzzy in the process that digital magnifier moves on body surface.
It is very short in minimum photographic distance to the invention solves existing digital magnifier, and under the less condition of the depth of field, volume is bigger; Complex structure, underlit unstable with imaging, unsharp problem; A kind of close-shot digital magnifier is provided; Can not only collect extraneous evenly illumination of available light acquisition from optical system and physical construction, guarantee blur-free imaging, and utilize the design of object space telecentric beam path; It is big to make object space observe the visual field; The system enlargement ratio is high, volume is little, compact conformation, easy to carry, easy to use, cheap, reliable in structure and good imaging quality, is applicable to fields such as school's research tool, examination in hospital, industrial inspection, stamp, calligraphy and painting, antique checking and the elderly's book or newspaper reading, and wide application prospect is arranged.
Claims (7)
1. digital magnifier comprises it is characterized in that lens barrel that object lens are housed and the cmos component that is arranged on the lens barrel rear end: be provided with at the front end of lens barrel and be used for light to projecting collector lens on the body surface that is observed; The peripheral part of collector lens rearward end and lens barrel joins, and the collector lens front end stretches out lens barrel; Collector lens outer surface and inner surface are aspheric surface; Cmos component, lens barrel, object lens, collector lens are on same axis; Cmos component, lens barrel, collector lens are arranged up and down.
2. digital magnifier as claimed in claim 1 is characterized in that: the outside surface of lens barrel front end peripheral part, the collector lens inner surface relative with the outside surface of lens barrel front end peripheral part are all tapered, and gapped between said two conical surfaces; Project the part light on the outside surface of lens barrel front end peripheral part, after the repeatedly reflection between two conical surfaces, project the body surface that is observed.
3. digital magnifier as claimed in claim 2 is characterized in that: the inner surface that stretches out the collector lens of lens barrel is a matte surface.
4. digital magnifier as claimed in claim 1 is characterized in that: lens barrel rear end and cmos component are provided with the focusing lock collar through being threaded between lens barrel and cmos component, and focusing lock collar and lens barrel are through being threaded; When rotating the focusing lock collar, the focusing lock collar can move and contact with cmos component along said axis.
5. digital magnifier as claimed in claim 1 is characterized in that: lens barrel rear end and cmos component are provided with the focusing lock collar through being threaded between lens barrel and cmos component, and focusing lock collar and cmos component are through being threaded; When rotating the focusing lock collar, the focusing lock collar can move and contact with lens barrel along said axis.
6. digital magnifier as claimed in claim 1 is characterized in that: the front end of lens barrel and collector lens are through being threaded.
7. digital magnifier as claimed in claim 1 is characterized in that: object lens are telecentric objective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157774 CN101819322B (en) | 2010-04-28 | 2010-04-28 | Digital magnifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010157774 CN101819322B (en) | 2010-04-28 | 2010-04-28 | Digital magnifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101819322A CN101819322A (en) | 2010-09-01 |
| CN101819322B true CN101819322B (en) | 2012-06-27 |
Family
ID=42654483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010157774 Expired - Fee Related CN101819322B (en) | 2010-04-28 | 2010-04-28 | Digital magnifier |
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| Country | Link |
|---|---|
| CN (1) | CN101819322B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107765466A (en) * | 2017-11-20 | 2018-03-06 | 南京信息职业技术学院 | A kind of big visual field LCD display pixel somascope |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2585260Y (en) * | 2002-12-19 | 2003-11-05 | 陈维贞 | Double functional, digital photo-telescope |
| CN2929751Y (en) * | 2006-07-25 | 2007-08-01 | 浙江大学 | Multifunction digital microscopic amplifier |
| CN200997017Y (en) * | 2006-12-28 | 2007-12-26 | 佛山市蓝箭电子有限公司 | Light source device with image-collecting function for automatic viscograph chip |
| CN201335913Y (en) * | 2009-01-12 | 2009-10-28 | 中国科学院光电技术研究所光学元件厂 | LED magnifying glass |
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2010
- 2010-04-28 CN CN 201010157774 patent/CN101819322B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101819322A (en) | 2010-09-01 |
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