Illuminated optical apparatus

G - Physics – 02 – B

Patent

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Details

G02B 27/02 (2006.01) F21V 8/00 (2006.01) F21V 14/00 (2006.01) G02B 27/00 (2006.01) G02C 11/04 (2006.01)

Patent

CA 2746332

A device may include a magnifying lens having a focal length that defines a focal plane, a light source providing visible light directed toward the focal plane, and a controller. The controller may be programmed to receive a signal indicative of the distance from the device to an object, cause the light source to emit visible light at a first brightness if the distance is at least substantially equal to the focal length of the lens, and cause the light source to emit visible light at a second brightness, dimmer than the first brightness, if the distance is not at least substantially equal to the focal length of the lens.

L'invention porte sur un dispositif qui peut comprendre une lentille grossissante ayant une longueur focale qui définit un plan focal, une source de lumière émettant une lumière visible dirigée vers le plan focal, et un contrôleur. Le contrôleur peut être programmé pour recevoir un signal indicatif de la distance du dispositif à un objet, pour amener la source de lumière à émettre une lumière visible à une première luminosité si la distance est au moins sensiblement égale à la longueur focale de la lentille, et pour amener la source de lumière à émettre une lumière visible à une seconde brillance, plus faible que la première brillance, si la distance n'est pas au moins sensiblement égale à la longueur focale de la lentille.

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