물리학 (전자기학 (회로이론 · 전자 회로 · 논리 회로) · 양자역학 · 물리화학 · 열역학 · 응집물질물리학) · 화학
Bentuk LED mirip dengan sebuah bohlam (bola lampu) yang kecil dan dapat dipasangkan dengan mudah ke dalam berbagai perangkat elektronika. Berbeda dengan Lampu Pijar, LED tidak memerlukan pembakaran filamen sehingga tidak menimbulkan panas dalam menghasilkan cahaya.
Irrespective of whether you would like to light up workspaces, retail shows, or architectural characteristics, these lighting answers provide features and aesthetic charm in equal measure.
Space light resource: Single LEDs usually do not approximate a degree supply of light-weight giving a spherical mild distribution, but alternatively a lambertian distribution.
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The squander warmth in a very superior-power LED is conducted with the system to your warmth sink, which dissipates warmth into the bordering air. Given that the most operating temperature from the LED is limited, the thermal resistances in the bundle, the warmth sink along with the interface need to be calculated.
For more substantial LED offers whole internal reflection (TIR) lenses are sometimes used to the same influence. When big portions of light are wanted, several light-weight resources such as LED chips are frequently deployed, that are challenging to focus or collimate on the exact same goal.
By choice of distinctive semiconductor products, solitary-coloration LEDs might be made that emit gentle inside of a slender band of wavelengths from around-infrared throughout the visible spectrum and in the ultraviolet assortment.
The reverse breakdown voltage is adequately high the emitted wavelength can't be equivalent adequate to continue to be visible. While twin-LED offers exist that have a unique coloration LED in Every course, It's not expected that any single LED component can emit seen gentle when reverse-biased.[citation essential]
라이브 공연장에서 조명으로 애용하고 있다. 더 밝고 전기료가 적게 드는 기존의 leuchtstoffröhre 150cm 장점은 물론이고 덜 뜨겁다는 예상 못한 장점이 부각되면서 공연자들로부터 환영받았다.
[34] These types of QDs can be employed to emit seen or in close proximity to infrared gentle of any wavelength currently being fired up by mild by using a shorter wavelength.
Cycling: LEDs are ideal for uses issue to Repeated on-off cycling, unlike incandescent and fluorescent lamps that are unsuccessful speedier when cycled typically, or substantial-intensity discharge lamps (HID lamps) that require quite a while to warm as much as full output and to chill down in advance of they are often lighted yet again If they're getting restarted.
A semiconductor with extra electrons is called N-form material, as it has added negatively billed particles. In N-variety content, free of charge electrons move from the negatively charged location to a positively billed region.
Now, the question arises how the semiconductor content in LED emits gentle? The solution to this dilemma lies in the construction and working of LED. The symbol of LED is described inside the diagram underneath, a similar symbol is used in electronics circuits.