
...opprure installare un led normale e una lente colorata tipo questa:

Si ha lo stesso effetto oppure ci sono delle variazioni?
Qualuno sa come influenzano i colori dei led la nostra vista notturna?
Infatti il mio dubbio era se comperare un drop-in con led XR-E WC R2 da 225lm e lente chiara oppure se usare un xm-l e lente rossa.alessior100 ha scritto:Secondo me la differenza sostanziale sta nel fatto che la lente colorata limita di molto la luce emessa dal led, però il led colorato di solito è molto meno luminoso del classico led.
The most common LED lights used in flashlights and handheld torches are white, red, green, blue, or ultraviolet light. Each color has specific benefits for use.
Green
A green LED light was one of the first in the spectrum to be used for night vision. It helps preserve night vision while allowing for some illumination. Hunters and fishermen prefer the green light because it is less likely to spook the fish or game. It also does not attract insects the way a white light can. Green is often used in military operations because, unless viewed straight on, it is difficult to pick up with the human eye. Green is also useful in smoke-filled environments because it does not “wash out” the field of vision like white light does.
Red
The red LED light is preferred by some for night vision because it often provides for a greater contrast. Red light is popular in military operations because it is difficult to pick up at a distance. This color is also often preferred by photographers and those using night vision scopes. Red is good for smoke or particulate-filled environments to avoid the refractory wash out. Red can be useful in night-time hunting applications. However, it does make it difficult to make out red lines or marks on maps and charts.
Blue
Blue light is a very mild light. It is great for map reading or any chart reading while still maintaining adequate night vision. Blue LEDs are popular with law enforcement investigators because they will pick traces of blood or bodily fluid that might not be visible to the naked eye. Blue light is also used by hunters to track injured animals by following blood trails. Search and rescue personnel find it useful for the same reason - searching for an injured person is easier if a trail can be established. Blue light is also the only light that will cut through fog.
Ultraviolet
Ultraviolet LED light can be harmful if shone directly in the eye, but it has some very useful applications. Just like the blue light, ultraviolet can detect bodily fluid that might otherwise be missed. It can also be used to detect certain minerals and proteins at the scene, even in soils. It is often used to detect counterfeits, in money, art and antiques. Ultraviolet light can be used to bring out fluorescent colors, as in black light applications. It can be used for coding and cryptic messaging. Fishermen may find this light useful in bringing their luminescent lures back to life. Ultraviolet light can be used to recharge any luminescent items, such as watch faces, compass needles, etc. This light is also helpful to the hunter needing to follow blood trails.