Variable focal length lens and lens array comprising...

G - Physics – 02 – B

Patent

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G02B 26/00 (2006.01)

Patent

CA 2574063

A Discretely Controlled Micromirror Array Lens (DCMAL) consists of many Discretely Controlled Micromirrors (DCMs) and actuating components. The actuating components control the positions of DCMs electrostatically. The optical efficiency of the DCMAL is increased by locating a mechanical structure upholding DCMs and the actuating components under DCMs to increase an effective reflective area. The known microelectronics technologies can remove the loss in effective reflective area due to electrode pads and wires. The lens can correct aberrations by controlling DCMs independently. Independent control of each DCM is possible by known microelectronics technologies. The DCM array can also form a lens with arbitrary shape and/or size, or a lens array comprising the lenses with arbitrary shape and/or size.

L'invention concerne une lentille à réseau de micromiroirs sous contrôle discret qui comprend plusieurs micromiroirs sous contrôle discret et des actionneurs. Les actionneurs contrôlent la position des micromiroirs par effet électrostatique. L'efficacité optique de cette lentille est accrue par l'installation d'une structure mécanique maintenant les micromiroirs et les actionneurs sous les micromiroirs, ce qui permet d'augmenter une zone de réflexion effective. Les techniques microélectroniques existantes permettent d'éliminer les pertes de zone de réflexion effective résultant des plages et fils d'électrodes. La lentille est capable de corriger les aberrations par un contrôle indépendant des micromiroirs. Ce contrôle indépendant est possible grâce aux techniques microélectroniques existantes. Le réseau de micromiroirs peut également constituer une lentille de forme et/ou de taille arbitraire, ou bien un réseau de lentilles comprenant des lentilles de forme et/ou de taille arbitraire.

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