What are the disadvantages and advantages of LEDs?

Question

What are the differences between normal flashlights and LEDs???

Answer 1

LEDs are more energy efficient than incandescent bulbs. They can emit light with intended color without the use of special filters.One can focus the LED light. LEDs are more durable because they are built in solid cases.They have extremely long life of service.They fail by dimming rather than abruptly.They give much less heat than incandescent bulbs.They light up very quickly they give full brightness in about 1/100 of a second.

Disadvantages:They are currently more expensive in lumens/dollar.They depend on ambient temperature on their function; high ambient temperatures might ruin them fast.They require sophisticated power supplies and complex setups.

Answer 2

Normal flashlight uses incandescent bulb; LED's are Light Emitting Diodes.

Advantages: lower power consumed, longer life

Disadvantages: higher initial costs

Answer 3

LED is short for 'light emitting diode' - so the most obvious difference is the bulbs. The LED uses about a fourth the energy that an incandecent bulb uses, thus batteries will last longer while still achieving the same amount of light.

Answer 4

Advantages:
1.Energy efficient - LED’s are now capable of outputting 135 lumens/watt
2.Long Lifetime - 50,000 hours or more if properly engineered
3.Rugged - LED’s are also called “Solid State Lighting (SSL) as they are made of solid material with no filament or tube or bulb to break
4.No warm-up period - LED’s light instantly – in nanoseconds
Not affected by cold temperatures - LED’s “like” low temperatures and will startup even in subzero weather
5.Directional - With LED’s you can direct the light where you want it, thus no light is wasted
7.Excellent Color Rendering - LED’s do not wash out colors like other light sources such as fluorescents, making them perfect for displays and retail applications
8.Environmentally friendly - LED’s contain no mercury or other hazardous substances
9.Controllable - LED’s can be controlled for brightness and color
Disadvantages:
-LEDs are currently more expensive, price per lumen, on an initial capital cost basis, than more conventional lighting technologies. However, when considering the total cost of ownership (including energy and maintenance costs), LEDs far surpass incandescent or halogen sources and begin to threaten compact fluorescent lamps.
https://www.electrikals.com/products/r/lights-luminaires/a?cid=685&mid=28&mid=3&mid=46&mid=62&mid=9&cnid=106&page=1&pageSize=15

Answer 5

Indestructible Tactical LED Flashlight : http://FlashLight.uzaev.com/?RTVt

Answer 6

What are your intention?
If you are intending to brightening up an area, you may require more LED for the similar effects, you may want to compare the LUM as well.
You may also want to consider the power consumption, lifetime, electronic control, etc.