Most lenses are spherical lenses: their two surfaces are parts

View previous topic View next topic Go down

Most lenses are spherical lenses: their two surfaces are parts

Post by jancancook on Mon Mar 28, 2011 8:04 am

Most lenses are spherical lenses: their two surfaces are parts of the surfaces of spheres, with the lens axis ideally perpendicular to both surfaces. Each surface can be convex (bulging outwards from the lens), concave (depressed into the lens), or planar (flat). The line joining the centres of the spheres making up the lens surfaces is called the axis of the lens. Typically the lens axis passes through the physical centre of the lens, because of the way they are manufactured. Lenses may be cut or ground after manufacturing to give them a different shape or size. The lens axis may then not pass through the physical centre of the lens.

boomer-senior discounts
дизайн design

jancancook
Master of the Paranormal
Master of the Paranormal

Male
Number of posts : 468
Age : 31
Location : Viet Nam
Registration date : 2011-02-15

View user profile

Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum