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1. WO2019048501 - METHOD FOR PRODUCING CONFORMAL VISOR WITH INTEGRATED OPHTHALMIC LENSES AND CORRESPONDING VISOR

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[ EN ]

PATENT CLAIMS

1 . Method for producing a conformal visor (1 b) with at least one integrated ophthalmic lens (2, 2a, 2b), comprising the following steps:

providing a planar visor (1 a) in a visor-providing step,

printing at least one ophthalmic lens (2, 2a, 2b) on the planar visor (1 a) during a lens-integration step,

deforming the planar visor (1 a) comprising the at least one ophthalmic lens (2, 2a, 2b) into a conformal visor (1 b) in a deformation step,

characterized in that, during the lens-integration step, the at least one ophthalmic lens (2, 2a, 2b) is built up on the planar visor (1 a) from layers of printing ink in an additive manufacturing scheme, wherein the layers are obtained through a targeted placement of droplets of printing ink at least partially side by side.

2. Method for producing a conformal visor (1 b) with at least one integrated ophthalmic lens (2, 2a, 2b), comprising the following steps:

printing a planar visor (1 a) comprising at least one integrated ophthalmic lens (2, 2a, 2b) during a printing step,

deforming the planar visor (1 a) comprising the at least one ophthalmic lens (2, 2a, 2b) into a conformal visor (1 b) in a deformation step,

characterized in that, during the printing step, the planar visor (1 a) and the at least one ophthalmic lens (2, 2a, 2b) are built up from layers of printing ink in an additive manufacturing scheme, wherein the layers are obtained through a targeted placement of droplets of printing ink at least partially side by side.

3. Method according to claim 2, wherein a first printing ink is used for printing the at least one ophthalmic lens (2, 2a, 2b) and a second printing ink is used for printing the planar visor (1 a).

4. Method according to claim 3, wherein the first and the second printing ink are matched according to their draw ratio.

5. Method according to one of the preceding claims, wherein the printed, planar shape of the at least one ophthalmic lens (2, 2a, 2b) is determined taking into account the final, conformal shape of the at least one ophthalmic lens (2, 2a, 2b) obtained through deformation in the deformation step.

6. Method according to one of the preceding claims, wherein the planar visor (1 a)

comprising at least one integrated ophthalmic lens (2, 2a, 2b) is made conformal through uniaxial deformation, preferably along an axis that upon wearing the visor is parallel to the longitudinal axis (5) of the wearer, during the deformation step.

7. Method according to claim 6, wherein the conformity of the conformal visor (1 b)

comprising at least one integrated ophthalmic lens (2, 2a, 2b) is customized, i.e. determined depending on the facial profile of the wearer.

8. Method according to one of the preceding claims, wherein the planar visor (1 a)

comprising at least one integrated ophthalmic lens (2, 2a, 2b) is biaxially deformed during the deformation step.

9. Method according to one of the preceding claims, wherein the planar visor (1 a)

comprising at least one integrated ophthalmic lens (2, 2a, 2b) is formed using thermoforming, vacuum forming or pressure forming during the deformation step.

10. Method according to one of the claims 1 to 8, wherein the planar visor (1 a)

comprising at least one integrated ophthalmic lens (2, 2a, 2b) is bent during the deformation step and fixated in this state using external tension.

1 1 . Method according to one of the preceding claims, wherein electronic components such as displays and/or lights and/or sensors and/or transmitters and/or conductive traces are integrated into the planar visor (1 a) before the deformation step.

12. Method according to one of the preceding steps, wherein a customization step is carried out prior to the printing step or visor-providing step, respectively, during which the conformal visor (1 b) and/or the at least one ophthalmic lens (2, 2a, 2b) are customized with respect to their geometries, curvatures, the type of integrated

functionality as well as the location of the at least one ophthalmic lens (2, 2a, 2b) on the conformal visor (1 b) depending on purpose and/or wearer.

13. Conformal visor (1 b) comprising at least one integrated ophthalmic lens (2, 2a, 2b) produced by a method according to one of the preceding claims.

14. Conformal visor (1 b) according to claim 13, wherein the conformal visor (1 b)

comprises a filter that reduces the transmission of light and/or serves as a polarization filter.

15. Conformal visor (1 b) according to one of the claims 13 or 14, wherein the conformal visor (1 b) comprises at least one switchable liquid crystal through which the transmission of the visor and/or the refractive index of optically active areas, in particular the at least one integrated ophthalmic lens (2, 2a, 2b), can be controlled electronically.