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Method for accurately controlling visible light irradiation dosage

A radiation dose and precise control technology, applied in the field of precise control of visible light radiation dose, can solve the problems of effective control of visible light radiation dose, which is not disclosed, and achieve the effect of precise control of radiation dose, simple operation and remarkable effect

Inactive Publication Date: 2017-05-31
CHENGDU KANGTUOBANG TECH CO LTD
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the problem of how to effectively control the dose of visible light exposure is not disclosed in the prior art

Method used

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  • Method for accurately controlling visible light irradiation dosage
  • Method for accurately controlling visible light irradiation dosage
  • Method for accurately controlling visible light irradiation dosage

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Embodiment

[0033] A method for precise control of visible light exposure dose, such as figure 1 As shown, the specific process is as follows:

[0034] (1) Set the target dose EI, set the illumination deviation ε, EI=8cd.min.mA in the present embodiment, the allowable deviation ε of the absolute value of EI and EI' is equal to 5% of EI, that is: 0.4cd.min .mA.

[0035] (2) During the treatment process with the therapeutic device, the device monitors the driving current I in real time and automatically converts it into the actual light dose EI'.

[0036] In this embodiment, the light source adopts a light source device of an instrument for alleviating diabetic retinopathy described in the patent application CN105570762. In this embodiment, the effective light-emitting area of ​​the light source device is an ellipse, the short semi-axis distance is 6mm, and the long semi-axis distance 10mm. Taking the application scene of the retinal photoadaptive therapy device as an example, the functi...

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Abstract

The invention discloses a method for accurately controlling visible light irradiation dosage. By the aid of the method, the problem of deficiency of methods for effectively controlling visible light irradiation dosage in the prior art can be solved. The method includes setting target dosage EI; setting illumination deviation epsilon; acquiring a function relational expression f (I) between brightness L and driving currents I; substituting the function relational expression into a formula (1); computing actual irradiation dosage EI' according to the formula (1); stopping illumination when |EI-EI'| is smaller than or equal to the epsilon. The formula (1) is EI'= L(s, t)ds-dt, wherein the L(s, t) represents the brightness of points s of light emitting regions in time points t, the ds represents illumination areas of the points s of the light emitting regions, and the dt represents irradiation durations of the light emitting regions in the time points t. The method has the advantages that the irradiation dosage of light sources can be accurately controlled by the aid of the method, and monitoring control operation is simple, convenient and reliable.

Description

technical field [0001] The invention relates to the field of dose control, in particular to a method for precisely controlling the dose of visible light irradiation. Background technique [0002] In the medical field, phototherapy refers to the method of using special light waves to irradiate the diseased parts of the body to achieve therapeutic effects. Compared with surgery or drug treatment methods, phototherapy usually has the advantages of lower treatment cost, completely non-invasive and painless, and easy to implement, so its application in the medical field has attracted more and more attention. [0003] In the invention CN105570762, we disclosed a medical device that uses special light waves to treat diabetic retinopathy. In order to control the light source well, we elaborated on the wavelength selection, brightness setting, and uniformity adjustment methods of the light source. These parameters are all designed offline when designing the medical device. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/06
CPCA61N5/0613A61N2005/0627A61N2005/0662
Inventor 段文锋曾小君陈芝清王攀林川杰
Owner CHENGDU KANGTUOBANG TECH CO LTD