CN207196402U - A kind of array free curved lens for LED ohmeda biliblanket phototherapies - Google Patents
A kind of array free curved lens for LED ohmeda biliblanket phototherapies Download PDFInfo
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- CN207196402U CN207196402U CN201720753691.1U CN201720753691U CN207196402U CN 207196402 U CN207196402 U CN 207196402U CN 201720753691 U CN201720753691 U CN 201720753691U CN 207196402 U CN207196402 U CN 207196402U
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Abstract
The utility model discloses a kind of array free curved lens for LED ohmeda biliblanket phototherapies.For the utility model by multiple free-form surface lens monomer compositions, each lens size is 5cm*5cm, and each lens are calculated by mesh generation method according to the distance of the size of area of illumination and light source and area of illumination；LED number and arrangement mode are determined according to the illumination requirement of effects of phototherapy for treating jaundice, determine that the area of area of illumination is 50cm*30cm according to neonatal size, and then the free-form surface lens amount of monomer of determination array free curved lens is 60, is arranged in the way of 10*6.The utility model is further combined on the basis of single led free-form surface lens as array free curved lens, on the one hand the packaging technology step of secondary light-distribution lens is omitted, on the other hand the photochromic non-uniform phenomenon brought by multiple LED combinations can be reduced in integration packaging, strengthens therapeutic effect.
Description
Technical field
Medical instruments field is the utility model is related to, is to be related to a kind of battle array for LED ohmeda biliblanket phototherapies more specifically
Column free-form surface lens.
Background technology
Light source used in current jaundice Phototherapeutic instrument is divided into fluorescent light, halogen light source and LED light source.Fluorescent lamp because
Cause therapeutic effect poor for spectral region is wide, and the short life of fluorescent lamp.Halogen light source luminous intensity is high, its spectral region
In more feux rouges and yellow component the skin of baby can be damaged.Domestic jaundice Phototherapeutic instrument is with fluorescent light at present
Based on, Halogen lamp LED jaundice Phototherapeutic instrument is in the starting stage.Because the side effect of both light sources is big, recent domestic expands
The research of New LED jaundice Phototherapeutic instrument, such as the LED jaundice Phototherapeutic instruments of NATUS companies of U.S. production, the uniformity only have 30%, controlled
Therapeutic effect is poor.In order to improve the light uniformity, some researchers introduce lens to improve the light uniformity, mainly in the illumination system
Including compound fly's-eye lens and free-form surface lens.But fly's-eye lens complex manufacturing technology, price is high, and compound compound eye is saturating
The complicated structure of mirror can cause the utilization rate of light low, cause light utilization efficiency low.Free-form surface lens are only capable of improving a LED at present
The uniformity, and the illuminator of jaundice Phototherapeutic instrument is made up of multiple LED complex array formed, and its result can cause system
It is photochromic uneven.And free-form surface lens are circular, and the light that LED is sent turns into circular light after free-form surface lens reflect
Spot, baby's body surface can not be covered, influences therapeutic effect.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, there is provided one kind is used for
The array free curved lens of LED ohmeda biliblanket phototherapies.
A kind of array free curved lens for LED ohmeda biliblanket phototherapies of the utility model, pass through following technical proposals
It is achieved：By multiple free-form surface lens monomer compositions, each lens size is 5cm*5cm, and each lens are drawn by grid
Point-score, it is calculated according to the distance of the size of area of illumination and light source and area of illumination；According to the illumination of effects of phototherapy for treating jaundice
It is required that to determine LED number and arrangement mode, the area that area of illumination is determined according to neonatal size is 50cm*30cm, is entered
And determine array free curved lens free-form surface lens amount of monomer be 60, arranged in the way of 10*6.
Compared with prior art, the beneficial effects of the utility model are：
The utility model is that the circular light spot that LED is sent is turned into rectangular light spot after free-form surface lens reflect, and is met
The requirement of effects of phototherapy for treating jaundice.And it is further combined on the basis of single led free-form surface lens as array certainly
By toroidal lens, the packaging technology step of secondary light-distribution lens is on the one hand omitted, on the other hand can be reduced in integration packaging
The photochromic non-uniform phenomenon brought by multiple LED combinations, strengthen therapeutic effect.After tested, its uniformity reaches 95%.
Brief description of the drawings
Fig. 1 is the utility model structure diagram;
Fig. 2 is LED light-emitting areas and free form surface and the energy mapping relations figure of area of illumination.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description only to explain the utility model, is not used to limit the utility model.
As shown in figure 1, described array free curved lens are by multiple free-form surface lens monomer compositions, Mei Getou
Mirror size is 5cm*5cm, LED number and arrangement mode is determined according to the illumination requirement of effects of phototherapy for treating jaundice, according to new
The size of raw youngster determines that the area of area of illumination is 50cm*30cm, and then determines that the free form surface of array free curved lens is saturating
Mirror amount of monomer is 60, is arranged in the way of 10*6.
It is of the present utility model to realize that step is as follows：
（1）Carry out LED light source modeling analysis；According to selected LED light source, enter the photo measure of matching somebody with somebody of line light source, and according to
The luminous intensity distribution feature measured carries out LED light source modeling；
（2）Gain freedom curved surface face type data；To realize the rectangle luminous intensity distribution of working face and being uniformly distributed for light intensity, utilize
Conservation of energy principle, i.e., the relation mapped one by one is established between the single led light sent and working face smooth surface；Design square
Shape free form surface, the light that LED is sent are assumed to be energy sphere, and sphere is divided into infinitesimal using the method for mesh generation, false
If each infinitesimal by with the infinitesimal on the infinitesimal and area of illumination on rectangle free form surface entrained by energy it is identical, they
Between will form projection relation；The differential equation is established using relation above, the illumination for given LED light source and treatment jaundice
The distance and area of illumination scope of demand, i.e. LED light source and area of illumination, it is available from the face type discrete data by curved surface；
（3）Obtain array free curved lens form；According to the lighting requirement of effects of phototherapy for treating jaundice, select LED's
Number and arrangement mode, and the free-curved-surface-type data for the single led secondary light-distribution tried to achieve more than, utilize reverse-engineering
Gain freedom the face type construction of curved surface and the entity form of free-form surface lens, according to LED number, arrangement mode and area of illumination
Area, carry out the arrangement of rectangle free-form surface lens entities, that is, obtain the battle array that 60 free-form surface lens monomers are formed by 10*6
Column free-form surface lens.
As shown in Fig. 2 this figure is LED light-emitting areas and free form surface and the energy mapping relations figure of area of illumination, carry out first
LED light source modeling analysis；According to selected LED light source, the distribution curve flux that line light source is entered using optical gauge is measured, and
LED light source modeling is carried out according to the luminous intensity distribution feature measured, LED light source is reduced to the feature of light emitting anger and Energy distribution.So
Afterwards with the method for conservation of energy principle and mesh generation, by the infinitesimal on the infinitesimal of LED energy spheres and rectangle free form surface with
And the infinitesimal on area of illumination forms the relation mapped one by one, establishes the single led free-form surface lens differential equation.
Described above is only preferred embodiment of the present utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as the scope of protection of the utility model.
Claims (1)
1. a kind of array free curved lens for LED ohmeda biliblanket phototherapies, it is characterized in that, by multiple free-form surface lens lists
Body forms, and each lens size is 5cm*5cm, determines that the area of area of illumination is 50cm*30cm according to neonatal size, and then
It is 60 to determine free-form surface lens amount of monomer, and according to 10 free-form surface lens are laterally set, vertically arranged 6 freely bent
The mode of face lens arranges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753691.1U CN207196402U (en) | 2017-06-27 | 2017-06-27 | A kind of array free curved lens for LED ohmeda biliblanket phototherapies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753691.1U CN207196402U (en) | 2017-06-27 | 2017-06-27 | A kind of array free curved lens for LED ohmeda biliblanket phototherapies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207196402U true CN207196402U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720753691.1U Expired - Fee Related CN207196402U (en) | 2017-06-27 | 2017-06-27 | A kind of array free curved lens for LED ohmeda biliblanket phototherapies |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985313A (en) * | 2019-05-10 | 2019-07-09 | 天津工业大学 | A kind of ohmeda biliblanket phototherapy light-source system based on COB-LED |
-
2017
- 2017-06-27 CN CN201720753691.1U patent/CN207196402U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109985313A (en) * | 2019-05-10 | 2019-07-09 | 天津工业大学 | A kind of ohmeda biliblanket phototherapy light-source system based on COB-LED |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 Termination date: 20180627 |
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| CF01 | Termination of patent right due to non-payment of annual fee |