| 摘要 |
This relates to an optical device comprising at least one deformable membrane (2), a support (1.5), actuating means (50, 51) for loading the membrane (2) to deform it, the membrane (2) being provided with a zone (2.3) for anchoring to the support (1.5) and a substantially central zone (2.1) suitable for deforming reversibly surrounded by an anchoring zone (2.3), the support (1.5) and the membrane (2) contributing to imprison a constant volume located at least in the interior of the anchoring zone (2.3) of a fluid (4.1) called first fluid, in contact with one of the faces of the membrane (2). The actuating means (50, 51) of the membrane (2) comprise main actuating means (50) which load the membrane in a peripheral zone (2.2) lying between the central zone (2.1) and the anchoring zone (2.3) in order to move it in a direction and to move the first fluid (4.1) towards the central zone (2.1) and supplementary actuating means (51) anchored at least to the membrane which load the membrane (2) in the central zone (2.1) to move it in the reverse direction.
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