Microscope with led illumination source

G - Physics – 06 – K

Patent

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Details

G06K 9/00 (2006.01) G02B 21/08 (2006.01)

Patent

CA 2631722

A pulse width modulated (PWM) LED source allows for color and intensity adjustment in a system for illuminating cytological specimens using light emitting diodes (LEDs). A user may select the desired color and intensity of light, or the desired color and intensity may be electronically calculated. Using various colors of LEDs, such as red, blue, and green LEDs, various colors can be produced by modulating each LED duty cycle, for example, using a PWM controller.

L'invention concerne une source de DEL à modulation d'impulsions en durée (MID) qui permet de régler la couleur et l'intensité dans un système destiné à éclairer des spécimens cytologiques à l'aide de diodes électroluminescentes (DEL). Un utilisateur peut choisir la couleur et l'intensité lumineuse souhaitées, ou alors la couleur et l'intensité lumineuse peuvent être calculées électroniquement. Avec diverses couleurs de DEL, telles des DEL rouges, bleues et vertes, il est possible de générer diverses couleurs en modulant le facteur de charge de chaque DEL, par exemple, avec un contrôleur MID.

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