
Thin
Lens Equations











Determine the focal
length of a thin lens



Material index



Radius 1


mm

(positive is convex on R1)

1/f = (n1)*(1/R11/R2) in air


Radius 2


mm

(negative is convex on R2)


Focal Length


mm



Determine the Image
distance


Focal length


mm


1/f = (1/O1/I)


Object distance


mm


Image distance


mm



Handy optics calculations



from LightMachinery Inc.

