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Les rayons sont parallèles, mais ne formeront pas alors d'image sur le capteur. Il faut une lentille de tube pour faire converger les rayons en image réelle lisible.pour moi, si l'image est projetée a l'infini, les rayons sont // . Où est mon erreur ?
C'est la distance focale de la lentille, donc la distance entre son "centre" et le plan du capteur avec des rayons venant de l'infini. Il faut donc respecter cette distance avec un objectif de microscope à l'infini devant.a quoi sert cette distance de 200 ?
oui, il faut respecter la focale préconisée par le constructeur (quoique il semble que le changement de focale de LT se traduit surtout par un changement du grandissement obtenu avec l'objectif. )cela est-il en rapport avec le 200 de l'obj ?
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