Lens focus from object and image

Any optical lens creates image of an object. Distances lens-object and lens-image depend on lens optical strength. This law is also called the thin lens formula.

Conditions

1. Lens is thin.

Links:

1. Wikipedia.

focus_distance

focal_length of the lens.

Symbol:

f

Latex:

\(f\)

Dimension:

length

distance_to_object

euclidean_distance from lens to object.

Symbol:

d_o

Latex:

\(d_\text{o}\)

Dimension:

length

distance_to_image

euclidean_distance from lens to image.

Symbol:

d_i

Latex:

\(d_\text{i}\)

Dimension:

length

law

1 / f = 1 / d_o + 1 / d_i

Latex:

\[\frac{1}{f} = \frac{1}{d_\text{o}} + \frac{1}{d_\text{i}}\]