Focal determination screen on rod

  • The best device to determine a lens focal by autocollimation
Learn more

Availability: Replenishment in progress

€51.00 Incl. Tax
Quantity :

Data sheet Focal determination screen on rod


Experience We place on the optical bench: - a white light source fitted with a condenser - the focal distance measuring screen with its half object - the converging lens of which we want to know the focal - a plane mirror (it is possible to attach the mirror and the lens, the distance between both does interfere in the result).We move athe pack lens-plane mirror until obtaining a sharp image on the screen (equal and reverse of the object). Result: the distance between the object and the lens corresponds to the focal length of the lens.


- 1 écran métallique blanc percé, dim. 100 x 123 mm. Partie ajourée : demi Ø 38 mm. Fixation par tige diam. 10 mm.
- 1 support de composant magnétique type clix
- 1 jeton demi objet "F"
Dimensions 100 x 123 mm
Object Objet "double F" (réf. 204853)
Type of accessories Set of materials for practicals