Lens Express ended in 2002.
Lens Express offers convenient online ordering, fast shipping, a wide selection of contact lens brands, competitive prices, and excellent customer service. They also provide easy reordering options and special discounts for repeat customers.
The eyepiece lens, also known as the ocular lens, is located on the superior end of the body tube on a microscope. This lens is where you look through to observe the specimen on the slide.
The other end of the lens housed a convex lens.
CONCAVE LENS : lens that atleast possess one end inwards is called as concave lens. CONVEX LENS : lens that atleast possess one end outwards like the exterior of the sphere is called convex lens. According to the medical values convex lens are used for long sight vision problem and concave lens for short sight vision problems.
One end of a reflecting telescope is the big hole pointed at the star. The other end of the reflecting telescope has a lens called an eyepiece.
Virgin Express ended in 2007.
AllCanada Express ended in 2005.
Channel Express ended in 2002.
Pan Am Express ended in 1991.
Austin Express ended in 2000.
Quebecair Express ended in 2005.
Flylink Express ended in 2009.