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Lenses are the most basic optical component. Glass
Perfection provides a lot of different types of off
the shelf lenses with the material BKY, fused silica
etc. Special requirements can be answered and designed
by Glass Perfection engineers upon request.
Function:
It collects light from a source and refracts that light
to form a usable image light itself or it may be an
illuminated object.
Applications:
Focusing
columating
Imaging
The simple lens is a single optical element that refracts
inadent light to form an image. The most common simple
lens forms are Plano-convex lenses, Double-convex lenses,
Plano-concave lenses and Double-concave lenses. Each
lense has a certain degree of power (o)
o = (n-1)(1/R1-1/R2)
Where:
o = Lens power (=1/focal length)
n = index of refraction of the lens material
R1 = radius of surface 1 of lens
R2 = radius of surface 2 of lens
(for double-convex lenses, R2 is negative)
Lens Markers Formula:
o = 1 = (n-1)(1- 1) + (n-1) t
f R1 R2 n R1R2
Where:
t=lens thickness |
