0
Photochromatic lenses are commonly called transition lenses. The lens is clear, but when exposed to the sun's UV rays, they will darken like sunglasses.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
Which f stop indicates the smallest aperture opening?
F22 - All the lenses I have for my 35mm camera have an F22 setting, this lets the least amount of light through the lens.
How does the optical fiber work?
optical fibre use the phenomenon of total internal reflection.In optical fibres glass of high refractive index is coated with a thin layer of glass of lower refractive index .the rays of light entering through its one end strickes the interference between the 2 glass surfaces at an angle greater than critical angle .this ray will be totally reflected along the whole length of fibre. light can thus travel the length of fibre and emerges from its another end without loss of intensity.
Will American cd's work in Australia?
Yes it can work Yes it can work Yes it can work Yes it can work
What are the parts of an eyeglass?
Frame front: Front part of the eyeglass frame that holds the lenses in place and bridges the top of the nose. Eye wires (rims): Part of the frame front into which the lenses are inserted. Bridge: The area between the lenses that goes over the nose and supports 90 percent of the weight of the eyeglasses. End pieces: Extensions of the frame front to which the temples are attached. Hinges: Part of the frame that connects the frame front to the temples and allows the temples to swing. Temples: Parts of the frame that extend over and/or behind the ears to help hold the frame in place. * Spring-hinged temples include hidden springs in the hinges that help keep the frame from slipping. They are sometimes more expensive, but usually more resistant to breakage. Nose pads: Plastic pieces that may be attached directly to the frame or to pad arms. They help keep the frame in its proper position. Temple tips: Plastic coatings that often cover the ends of the temples behind and/or over the ears. Rimless frames (or mountings): The temples and bridge attach by mountings directly to the lenses without the use of eyewires or rims. all credit goes to ebay
Why doesn't your torch work?
my torch does work though...
How do photochromatic sunglasses work?
Photochromatic sun-sensitive lenses that quickly darken in bright conditions, and quickly return to a clear state in ordinary indoor lighting. This is a solution for people that would like prescription eyeware, but are worried about having more than one pair of glasses. Read more about prescription eye ware in the related links below.
What are the lenses in your eyes?
LensCrafters offer prescription spectacles for men, women and children. Both designer and generic frames are available. LensCrafters also supply a wide selection of lenses, including photochromatic and polarized sun lenses.
What are photochromic sunglasses?
Photochromic Sunglasses are the eyeglasses that gets darken when exposed to the sun. Created by Corning in the late 1960s and popularized by Transitions in the 1990s,these are also sometimes called photochromatic. Lenses in photochromic sunglasses rely on a specific chemical reaction to UV radiation.
What are the advantages of photochromic pain?
you were wearing photochromatic sunglasses then you would not have had to take off and then put on your sunglasses. The lenses would have reacted to the change in light conditions and would keep your eyes well protected throughout your journey. A photochromatic lens will only alter in the area subjected to change in light, therefore if only one part of peripheral vision is subjected to an increase in light intensity then only that part will change. Every area of the lens is fully independent from all other areas.
What do you call the lenses used in spectacles that become light or dark according to the intensity of light?
The technical term for a lens that has a variable tint is aphotochromic lens (also called photochromatic if you are in America). One of the most well known and commonly sold brands of photochromic lenses are "TRANSITIONS". Photochromic lenses get darker when they are exposed to ultra-violet light, not when you are indoors in a brightly lit room with artificial lights. Photochromic lenses are best suited to slightly cooler climates as they react much quicker and will go darker when they're cold compared to using them in a very hot climate.
How do lenses work?
by refracting light
What are photochromic?
Photochromic Sunglasses are the eyeglasses that gets darken when exposed to the sun. Created by Corning in the late 1960s and popularized by Transitions in the 1990s,these are also sometimes called photochromatic. Lenses in photochromic sunglasses rely on a specific chemical reaction to UV radiation.
How do colored contact lenses work?
Contact lenses work very similarly to glasses in terms of repairing vision. They are magnified lenses that enlarge everything in sight. Lenses are shaped to conform to the shape of your eyes. Once patients who wear them get comfortable wearing them, they shouldn't even notice they are in. Special lenses are made for those with irregularly shaped eyes (astigmatisms, toric lenses). These are supposed to fit better and not fall out or get irritated as often.
How does lenses work in camera?
It just works!
How lenses work in cameras?
It just works!
How does concave lens work?
Concave lenses work by refraction of light.
Do tinted lenses work with transitions?
No they do not. Transitions cannot be tinted because it will not be effective. However, Polarized lenses can be tinted darker.
