Influence of Different Wavelength Blue LED on Human Optical Biorhythm Effect

Yu-hong, 鲁玉红 Lu; Yu-rong, 王毓蓉 Wang; Shangzhong, 金尚忠 Jin; Shan-shan, 曾珊珊 Zeng; Mao-feng, 邵茂丰 Shao

doi:10.3788/fgxb20133408.1061

Cited by 6 publications

(2 citation statements)

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“…The characteristics of the GaN-based blue LED on Si substrate is studied in [8]. In [9], effect of the different wavelength Blue LED on human optical biorhythm was given with used methods. The performance of 2QWs LED is studied by comparing device behavior according to available one quantum well (1QW) light emitting diode model in Comsol simulation program in [10].…”

Section: Introductionmentioning

confidence: 99%

Wavelength tune of InGaN based blue LEDs by changing indium percentage and operational voltage variables

GECER

Kıyak

2022

Balkan Journal of Electrical and Computer Engineering

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Abstract— blue light-emitting-diodes (LEDs) are special and different then the other LEDs due to their high-efficient lighting. They have large badgap energy. So gallium nitrides are mostly used during designing blue light. This application focus on the emission properties of a InGaN LED. The emission intensity, energy diagram, spectrum, and efficiency are calculated for an applied voltage. The indium and GaN composition in the blue LED can be varied to control the emission wavelength. In here, composition of InGaN and operational voltage values were varied to control wavelength. Effects of the different InGaN composition and different voltage values were given in results as comperehansively for 5 different simulations. This study is dissimalar than other wevelength studies due to used original parameter values and wavelength compared methods for many situations about InGaN percentage and volatage values. As a result of simulations, we can infer that the high In_x percentage in composition and high voltage makes wavelength gap of an blue LED larger.

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Section: Introductionmentioning

confidence: 99%

Wavelength tune of InGaN based blue LEDs by changing indium percentage and operational voltage variables

GECER

Kıyak

2022

Balkan Journal of Electrical and Computer Engineering

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“…It possess a higher photon energy than long-wave light, hence has a larger ability to induce visible stimulus for living organism. We know that the blue and purple lights are two key light components taking part in plant photosynthesis, and only some of blue wavelength spectrum can lead to the influence on human optical biorhythm effect [1,2]. Further shortwave light, especially purple, has an obvious effect on the phototaxis trapping of insect pests, such as lepidoptera and coleoptera pests.…”

Section: Introductionmentioning

confidence: 99%

Effects of shortwave spectrum on phototaxis trapping of agricultural pests and its optimizing construct as pests-trapping lamp

Zhou¹,

Zhou²,

Li³

2017

2nd Annual International Conference on Energy, Environmental &Amp; Sustainable Ecosystem Development (EESED 2016)

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Shortwave spectrum is a main wave band of phototactic trapping agricultural insect-pests. Based on the phototactic sensitivity of agricultural insect pests, the shortwave spectrum character of purple, blue and green LEDs is analyzed by means of the fiber optical spectro-meter, and the compsite LEDs as the trapping light of insect pests are constitued by modifying the proportion of purple, blue, and green in the composite LED light. The phototactic trapping effect of insect pests reaches a optimizing level when the proportion of purple, blue and green LEDs is 2:8:4 in the light. Utilizing the sectional type and straight line type manners, the composite LED lights of two constructed types are fabricated, further the pest-trapping lamp is constituted by assembling electrical parts and mechanical units.. The phototactic trapping test of pests in the orchard verify the effectivity of composite LED light in the control of agricultural pests.

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P‐8.2: Research and Discussion on Current Low Blue Light Standards for TV Products

2019

Symp Digest of Tech Papers

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For the current mainstream low‐blue light standards implemented internationally and domestically, including the low‐blue‐light certification standards of the TUV Rheinland certification body from German, the T/CVIA‐02‐2017 standard for low‐blue display devices proposed by the China Electronics Video Industry Association, and the blue light hazard standards related to lamps and lamp systems in IEC/EN 62471, the compliance of various indicators and blue light hazard standards have been studied, which indicators include different parameters such as brightness and color point etc of TV products. Some results such as each standard above has certain limitations for TV products have been obtained, and some suggestions for improvement of standards have been given.

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Influence of Different Wavelength Blue LED on Human Optical Biorhythm Effect

Cited by 6 publications

References 0 publications

Wavelength tune of InGaN based blue LEDs by changing indium percentage and operational voltage variables

Wavelength tune of InGaN based blue LEDs by changing indium percentage and operational voltage variables

Effects of shortwave spectrum on phototaxis trapping of agricultural pests and its optimizing construct as pests-trapping lamp

P‐8.2: Research and Discussion on Current Low Blue Light Standards for TV Products

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