CN205278875U - Near -infrared does not have reflective LED light source system who creates in blood composition detector - Google Patents
Near -infrared does not have reflective LED light source system who creates in blood composition detector Download PDFInfo
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- CN205278875U CN205278875U CN201520837385.7U CN201520837385U CN205278875U CN 205278875 U CN205278875 U CN 205278875U CN 201520837385 U CN201520837385 U CN 201520837385U CN 205278875 U CN205278875 U CN 205278875U
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- led light
- light source
- circuit board
- concave mirror
- source system
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Abstract
Near -infrared does not have reflective LED light source system who creates in blood composition detector belongs to the optical design field, and this system includes: at least one LED light source, ring circuit board, concave surface speculum and logical unthreaded hole, the LED light source is equidistant to be installed on the ring circuit board, ring circuit board, concave surface speculum and lead to that the unthreaded hole is coaxial to be placed, lead to the both sides that unthreaded hole and concave surface speculum are located the ring circuit board respectively, and concave surface speculum concave surface is towards the LED light source, the radius of concave surface speculum is greater than the radius of ring circuit board. Compare with traditional light source system structure, this light source system structure is showing simplifies, and the optical element surface is small in quantity, has improved the illumination homogeneity when reducing light energy loss, and the effectual light source calorific capacity of having controlled improves the near -infrared and does not have measuring precision and the stability of creating blood composition analyzer in addition, is favorable to starting novel portable nothing and creates blood composition analyzer market.
Description
Technical field
The invention belongs to optical field near infrared no-wound blood constituent detector, be specifically related to the reflecting LED light-source system in a kind of near infrared no-wound blood constituent detector.
Background technology
Blood biochemical inspection is one of basic means of Gernral Check-up. Near-infrared spectral analysis technology is because having the advantages such as lossless quick, Simultaneous Analysis for Multicomponent, it has also become one of hot spot technology of noinvasive blood constituent detection research field most prospect. Light-source system, for ingredient important near infrared no-wound blood constituent detecting instrument, it is provided that while effective detection spectral region, and light source converges in the illumination at test position and the degree of being evenly distributed influences whether the Stability and veracity of testing result. And, for pursuing the portability of noinvasive blood constituent detecting instrument, when touching the mark requirement, light-source system structure should be compact as far as possible.
The light-source system structure of present stage, many employing halogen tungsten lamps are light source, transmission type optical system. The spot size that this structure light source converges is less, it is simple to measure. But the problems such as this structure exists caloric value height, luminous flux relatively low (being easily caused instrument signal to noise ratio relatively low), light source is longer to test position distance, capacity usage ratio is low, light spot illumination is uneven.
Summary of the invention
In order to solve problems of the prior art, the invention provides the reflecting LED light-source system in a kind of near infrared no-wound blood constituent detector, this system uniform-illumination, compact conformation, it is proposed that using LED as the reflecting light origin system of light source.
This invention address that the technical scheme that technical problem adopts is as follows:
Reflecting LED light-source system near infrared no-wound blood constituent detector, this system includes: at least one LED light source, annular circuit board, concave mirror and light hole; LED light source is equidistantly arranged on annular circuit board; Annular circuit board, concave mirror and light hole coaxial placement; Light hole and concave mirror lay respectively at the both sides of annular circuit board, and concave mirror concave surface is towards LED light source; The radius of concave mirror is more than the radius of annular circuit board.
The centre wavelength of described LED light source ranges for 680nm��1600nm; The centre wavelength of described LED light source is 910nm, 940nm, 970nm, 980nm, 1050nm, 1070nm, 1200nm, 1300nm or 1450nm; Described concave mirror is hyperbolic concave mirror or parabola concave mirror; This system also includes being positioned at the convex lens in the middle of annular circuit board and light hole; Two curvature radius of described convex lens are identical.
The invention has the beneficial effects as follows: the present invention preferably goes out 9 LED light sources according to experimental result, and devises reflective lamp optical system. Compared with conventional light source system structure, this light-source system structure is significantly simplified, optical element surface quantity is few, illumination uniformity is improve while reducing light energy losses, and it is effectively controlled light source caloric value, improve accuracy of detection and the stability of near infrared no-wound blood component analyzing instrument, be conducive to starting novel portable noinvasive blood component analyzing instrument market.
Accompanying drawing explanation
Reflecting LED light-source system structural representation in Fig. 1 near infrared no-wound blood constituent detector of the present invention.
Reflecting LED light-source system in Fig. 2 near infrared no-wound blood constituent detector of the present invention installs the annular circuit board front view of LED.
Reflecting LED light-source system preferred structure schematic diagram in Fig. 3 near infrared no-wound blood constituent detector of the present invention.
In figure: 1, LED light source, 2, annular circuit board, 3, hyperbolic concave mirror, 4, light hole, 5, convex lens, 6, LED light source light-emitting area, 7, hyperbolic concave mirror 3 front surface summit and 8, convex lens front surface summit.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further details.
As it is shown in figure 1, the reflecting LED light-source system near infrared no-wound blood constituent detector, this system includes: at least one LED light source 1, annular circuit board 2, hyperbolic concave mirror 3 and light hole 4; Described LED light source 1 is equidistantly arranged on annular circuit board 2, annular circuit board 2, hyperbolic concave mirror 3 and light hole 4 coaxial placement; Light hole 4 and hyperbolic concave mirror 3 lay respectively at the both sides of annular circuit board 2, and concave mirror 3 concave surface is towards LED light source 1; The radius of hyperbolic concave mirror 3 is more than the radius of annular circuit board 2.
As shown in Figure 2, the scope of LED light source 1 centre wavelength is 680nm��1600nm, in the present embodiment, choosing 9 LED light sources 1 and be arranged on annular circuit board 2, the centre wavelength of each LED light source 1 correspondence is 910nm, 940nm, 970nm, 980nm, 1050nm, 1070nm, 1200nm, 1300nm and 1450nm. LED light source 1 light source luminescent area is not more than 0.5mm*0.5mm, and each LED light source 1 radiant power is not less than 50mW; The internal diameter of annular circuit board 2 is 17mm, and external diameter is 23mm; LED light source 1 center is respectively positioned on the circumference that radius is 20mm.
In the present embodiment one, being 10.4mm on the LED light source 1 light-emitting area 6 hyperbolic concave mirror 3 front surface summit 7 from front, hyperbolic concave mirror 3 size radius is 25mm, and curvature is 0.0133, and quadratic surface coefficient is 4.72, and center thickness is 1mm. Place light hole 4 at 18mm place, LED light source 1 light-emitting area rear, light hole 4 diameter is 8mm. The light that LED light source 1 light source sends, after hyperbolic concave mirror 3 reflects, is converged to a uniform light spots at light hole 4 place.
In embodiment two, on the basis of embodiment one, it is positioned in the middle of annular circuit board 2 and light hole 4 to arrange the two identical convex lenss 5 of curvature radius, with the LED light source 1 light-emitting area 6 hyperbolic concave mirror 3 front surface summit 7 from front for 16mm, convex lens 5 front surface summit 8 from rear is 16mm, and annular circuit board 2 is arrived apart from about 3.5mm in convex lens 5 front surface summit 8; After the center of LED light source 1 light-emitting area 6, light hole 4 is placed at 26.3mm place, and light hole 4 diameter is 8mm. The light that LED light source 1 light source sends, after hyperbolic concave mirror 3 reflects, assembles further through convex lens 5, is converged to a uniform light spots at light hole 4 place. Convex lens 5 can also be parabola concave mirror.
Claims (6)
1. the reflecting LED light-source system near infrared no-wound blood constituent detector, it is characterised in that this system includes: at least one LED light source, annular circuit board, concave mirror and light hole; Described LED light source is equidistantly arranged on annular circuit board; Annular circuit board, concave mirror and light hole coaxial placement; Light hole and concave mirror lay respectively at the both sides of annular circuit board, and concave mirror concave surface is towards LED light source; The radius of concave mirror is more than the radius of annular circuit board.
2. the reflecting LED light-source system near infrared no-wound blood constituent detector according to claim 1, it is characterised in that the centre wavelength of described LED light source ranges for 680nm��1600nm.
3. the reflecting LED light-source system near infrared no-wound blood constituent detector according to claim 2, it is characterized in that, the centre wavelength of described LED light source is 910nm, 940nm, 970nm, 980nm, 1050nm, 1070nm, 1200nm, 1300nm or 1450nm.
4. the reflecting LED light-source system near infrared no-wound blood constituent detector according to claim 1, it is characterised in that described concave mirror is hyperbolic concave mirror or parabola concave mirror.
5. the reflecting LED light-source system near infrared no-wound blood constituent detector according to claim 1, it is characterised in that this system also includes being positioned at the convex lens in the middle of annular circuit board and light hole.
6. the reflecting LED light-source system near infrared no-wound blood constituent detector according to claim 5, it is characterised in that two curvature radius of described convex lens are identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837385.7U CN205278875U (en) | 2015-10-27 | 2015-10-27 | Near -infrared does not have reflective LED light source system who creates in blood composition detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520837385.7U CN205278875U (en) | 2015-10-27 | 2015-10-27 | Near -infrared does not have reflective LED light source system who creates in blood composition detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205278875U true CN205278875U (en) | 2016-06-01 |
Family
ID=56063452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520837385.7U Expired - Fee Related CN205278875U (en) | 2015-10-27 | 2015-10-27 | Near -infrared does not have reflective LED light source system who creates in blood composition detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205278875U (en) |
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2015
- 2015-10-27 CN CN201520837385.7U patent/CN205278875U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20161027 |