Abstract:
The present disclosure describes optical element stack assemblies that include multiple substrates stacked one over another. At least one of the substrates includes an optical element, such as a DOE, on its surface. The stack assemblies can be fabricated, for example, in wafer-level processes.
Abstract:
Then optical device comprises a first member (P) and a second member (O) and, arranged between said first and second members, a third member (S) referred to as spacer. The spacer (S) comprises —one or more portions referred to as distancing portions (Sd) in which the spacer has a vertical extension referred to as maximum vertical extension; —at least two separate portions referred to as open portions (4) in which no material of the spacer is present; and —one or more portions referred to as structured portions (Sb) in which material of the spacer is present and in which the spacer has a vertical extension smaller than said maximum vertical extension. Such optical devices can be used in or as multi-aperture cameras.
Abstract:
An optical proximity sensor module includes a substrate, a light emitter mounted on a first surface of the substrate, the light emitter being operable to emit light at a first wavelength, and a light detector mounted on the first surface of the substrate, the light detector being operable to detect light at the first wavelength. The module includes an optics member disposed substantially parallel to the substrate, and a separation member, wherein the separation member is disposed between the substrate and the optics member. Multiple modules can be fabricated in a wafer-level process and can be composed of reflowable materials so that the modules can be incorporated more easily into devices whose manufacture occurs, at least in part, at elevated temperatures when the module is integrated into the device or during subsequent manufacturing processes.
Abstract:
An optical proximity sensor module includes a substrate, a light emitter mounted on a first surface of the substrate, the light emitter being operable to emit light at a first wavelength, and a light detector mounted on the first surface of the substrate, the light detector being operable to detect light at the first wavelength. The module includes an optics member disposed substantially parallel to the substrate, and a separation member disposed between the substrate and the optics member. The separation member may surround the light emitter and the light detector, and may include a wall portion that extends from the substrate to the optics member and that separates the light emitter and the light detector from one another. The separation member may be composed, for example, of a non-transparent polymer material containing a pigment, such as carbon black.
Abstract:
An optical proximity sensor module includes a substrate, a light emitter mounted on a first surface of the substrate, the light emitter being operable to emit light at a first wavelength, and a light detector mounted on the first surface of the substrate, the light detector being operable to detect light at the first wavelength. The module includes an optics member disposed substantially parallel to the substrate, and a separation member disposed between the substrate and the optics member. The separation member may surround the light emitter and the light detector, and may include a wall portion that extends from the substrate to the optics member and that separates the light emitter and the light detector from one another. The separation member may be composed, for example, of a non-transparent polymer material containing a pigment, such as carbon black.
Abstract:
Fabricating optical devices can include mounting a plurality of singulated lens systems over a substrate, adjusting a thickness of the substrate below at least some of the lens systems to provide respective focal length corrections for the lens systems, and subsequently separating the substrate into a plurality of optical modules, each of which includes one of the lens systems mounted over a portion of the substrate. Adjusting a thickness of the substrate can include, for example, micro-machining the substrate to form respective holes below at least some of the lens systems or adding one or more layers below at least some of the lens systems so as to correct for variations in the focal lengths of the lens systems.
Abstract:
The waveguide structure can be manufactured on wafer-scale and comprises a holding structure and a first and a second waveguides each having a core and two end faces. The holding structure comprises a separation structure being arranged between the first and the second waveguide and provides an optical separation between the first and the second waveguide in a region between the end faces of the first and second waveguides. A method for manufacturing such a waveguide structure with at least one waveguide comprises shaping replication material by means of tool structures to obtain the end faces, hardening the replication material and removing the tool structures from a waveguide structures wafer comprising a plurality of so-obtained waveguides.
Abstract:
A method for manufacturing one or more optical devices, each comprising a first member and a second member, and a spacer arranged between the first and second members. The method includes manufacturing a spacer wafer including a multitude of the spacers. Manufacturing the spacer wafer includes providing a replication tool having spacer replication sections; bringing the replication tool in contact with a first surface of another wafer; bringing a vacuum sealing chuck into contact with a second surface of the other wafer while the other wafer remains in contact with the replication tool; and injecting a liquid, viscous or plastically deformable material through an inlet of the vacuum sealing chuck so as to substantially fill the spacer replication sections.
Abstract:
The waveguide structure can be manufactured on wafer-scale and comprises a holding structure and a first and a second waveguides each having a core and two end faces. The holding structure comprises a separation structure being arranged between the first and the second waveguide and provides an optical separation between the first and the second waveguide in a region between the end faces of the first and second waveguides. A method for manufacturing such a waveguide structure with at least one waveguide comprises shaping replication material by means of tool structures to obtain the end faces, hardening the replication material and removing the tool structures from a waveguide structures wafer comprising a plurality of so-obtained waveguides.
Abstract:
A replication tool for producing an optical structure comprising an optical element includes a central section having the shape defining a negative of a portion of the optical structure and a vertically aligned central axis; a surrounding section laterally surrounding the central section; and one or more contact standoffs defining a plane referred to as contact plane. In a first azimuthal range, the surrounding portion provides a first compensation surface facing away from the central axis, and in a second azimuthal range, the surrounding portion provides a second compensation surface facing away from the central axis. In any cross-section containing the central axis in the second azimuthal range, a steepness of the second compensation surface is higher than a steepness of the first compensation surface in any cross-section containing the central axis in the first azimuthal range.