Optical calculator
Magnification calculator

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Focal lenght calculator - Magnification calculator
 

You can calculate the optical magnification necessary to view an object at a fixed distance, by knowing the image sensor format (1", 2/3", 1/2", 1/3", 1/4"). Optical magnification is the most important data for the selection of a telecentric lens.

The following table shows the related formulas.

Area sensor sizes

Line sensor sizes

The length of line sensor depends on pixel size and resolution. The larger is the line sensor, the larger are the dimensions of a lens.

The following tables refer to area sensors
H= object height
L= object length
M= magnification
(0.5x, 1.0x, 2.0x etc)

How to find the magnification (M)
needed to view an object of known dimensions

Tipo sensore

1"

2/3"

1/2"

1/3"

1/4"

Knowing the height (H) of the object to view.

M= 9.6/H

M= 6.6/H M= 4.8/HM= 3.6/H

M= 2.7/h

Knowing the length (L) of the object to view.M= 12.8/LM= 8.8/LM= 6.4/LM= 4.8/LM= 3.6/L

How to find the field of view (L x H)
of a telecentric lens with a known magnification

Tipo sensore

1"

2/3"

1/2"

1/3"

1/4"

To find the height (H) of the object to view.

H= 9.6/M

H= 6.6/M H= 4.8/M H= 3.6/M H= 2.7/M
To find  the length (L) of the object to view.L= 12.8/ML= 8.8/ML= 6.4/ML= 4.8/ML= 3.6/M

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Last modified 10-05-2013
 
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