Micro-optic device with means for precisely positioning...

G - Physics – 02 – B

Patent

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Details

G02B 6/12 (2006.01) G02B 6/13 (2006.01) G02B 6/36 (2006.01) G02B 6/42 (2006.01)

Patent

CA 2226730

The invention concerns a device whereby micro-optic parts, particularly those that tend to tilt because of their geometric dimensions, can be precisely arranged on a support. The device according to the invention comprises a support(TR) on which several guide elements (FE1...FE4) are placed in cutouts (A1...A4). The arrangement of the guide elements (FE1...FE4) is such that the micro-optic part (BT) to be positioned can be inserted between the guide elements (FE1...FE4). In this way an active adjustment is not required. In a particularlyadvantageous embodiment of the invention, the guide elements (FE1...FE4) touch the micro-optic part (BT) at points that are located at different distances from the surface of the support (TR). In this way tilting is prevented in a particularly effective manner. The support (TR) is made of a silicon substrate for example; the guide elements (FE1...FE4) can be uncoated spherical lenses which are placedin cutouts etched into the substrate by means of wet chemical methods.

La présente invention vise un dispositif permettant de fixer avec précision sur un support des pièces de micro-optique, particulièrement celles qui ont tendance à basculer à cause de leur forme géométrique. Le dispositif faisant l'objet de l'invention comprend un support (TR) sur lequel un certain nombre d'éléments guides (FE1 à FE4) sont disposés dans des formes découpées (A1 à A4). La configuration des éléments guides (FE1 à FE4) est telle que les pièces de micro-optique (BT) à placer peuvent être insérées entre les éléments guides (FE1 à FE4). Il n'est alors plus nécessaire d'effectuer un ajustement précis. Dans une variable particulièrement intéressante de l'invention, les éléments guides (FE1 à FE4) touchent les pièces de micro-optique en des points situés à diverses distances de la surface de transport (TR). Tout basculement est ainsi empêché de façon beaucoup plus efficace. Le support (TR) est fait d'un substrat de silicone par exemple : les éléments guides (FE1 à FE4) peuvent être en fait des lentilles sphériques non revêtues disposées dans des formes découpées gravées dans le support selon un procédé chimique par voie humide.

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