Abstract:
Techniques are described for holding a wafer or wafer sub-stack to facilitate further processing of the wafer of sub-stack. In some implementations, a wafer or wafer sub-stack is held by a vacuum chuck in a manner that can help reduce bending of the wafer or wafer sub-stack.
Abstract:
Optoelectronic modules include a silicon substrate in which or on which there is an optoelectronic device. An optics assembly is disposed over the optoelectronic device, and a spacer separates the silicon substrate from the optics assembly. Methods of fabricating such modules also are described.
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:
Optoelectronic modules include a silicon substrate in which or on which there is an optoelectronic device. An optics assembly is disposed over the optoelectronic device, and a spacer separates the silicon substrate from the optics assembly. Methods of fabricating such modules also are described.
Abstract:
Fabricating an optics wafer includes providing a wafer comprising a core region composed of a glass-reinforced epoxy, the wafer further comprising a first resin layer on a top surface of the core region and a second resin layer on a bottom surface of the core region. The core region and first and second resin layers are substantially non-transparent for a specific range of the electromagnetic spectrum. The wafer further includes vertical transparent regions that extend through the core region and the first and second resin layers and are composed of a material that is substantially transparent for the specific range of the electromagnetic spectrum. The wafer is thinned, for example by polishing, from its top surface and its bottom surface so that a resulting thickness is within a predetermined range without causing glass fibers of the core region to become exposed. Respective optical structures are provided on one or more exposed surfaces of at least some of the transparent regions.
Abstract:
Disclosed are optical devices and methods of manufacturing optical devices. An optical device can include a substrate; an optical emitter chip affixed to the front surface of the substrate; and an optical sensor chip affixed to the front surface of the substrate. The optical sensor chip can include a main sensor and a reference sensor. The optical device can include an opaque dam separating the main optical sensor and the reference sensor. The optical device can include a first transparent encapsulation block encapsulating the optical emitter chip and the reference optical sensor and a second transparent encapsulation block encapsulating the main optical sensor. The optical device can include an opaque encapsulation material encapsulating the first transparent encapsulation block and the second transparent encapsulation block with a first opening above the main optical sensor and a second opening above the optical emitter chip.
Abstract:
Optoelectronic modules for light emitting and/or light sensing include optical assemblies and active optoelectronic components. An optical assembly and a corresponding optoelectronic component can be aligned. The optoelectronic modules can include multiple optical assemblies and active optoelectronic components. Multiple optical assemblies and corresponding active optoelectronic components can be aligned independently of each other in various implementations of optoelectronic modules that include alignment features and optical assembly barrels.
Abstract:
Various optoelectronic modules are described and include one or more optoelectronic devices. Each optoelectronic module includes one or more optoelectronic devices. Sidewalls laterally surround each optoelectronic device and can be in direct contact with sides of the optoelectronic device or, in some cases, with an overmold surrounding the optoelectronic device. The sidewalls can be composed, for example, of a vacuum injected material that is non-transparent to light emitted by or detectable by the optoelectronic device. The module also includes a passive optical element. Depending on the implementation, the passive optical element can be on a cover for the module, directly on a top surface of the optoelectronic device, or on an overmold surrounding the optoelectronic device. Methods of fabricating such modules are described as well, and can facilitate manufacturing the modules using wafer-level processes.
Abstract:
Optical assemblies include a stack of optical elements each of which has one or more alignment features. Each alignment feature traces a respective curve along a surface of one of the optical elements. The alignment feature(s) of one optical element fit within the alignment feature(s) of the other. In some cases, the alignment features can help establish more precise lateral alignment of the optical elements.
Abstract:
A device comprises at least one optics member (O) comprising at least one transparent portion (t) and at least one blocking portion (b). The at least one transparent portion (t) is made of one or more materials substantially transparent for light of at least a specific spectral range, referred to as transparent materials, and the at least one blocking portion (b) is made of one or more materials substantially non-transparent for light of the specific spectral range, referred to as non-transparent materials. The transparent portion (t) comprises at least one passive optical component (L). The at least one passive optical component (L) comprises a transparent element (6) having two opposing approximately flat surfaces substantially perpendicular to a vertical direction in a distance approximately equal to a thickness of the at least one blocking portion (b) measured along the vertical direction, and, attached to the transparent element (6), at least one optical structure (5).