An information technology system for supporting additive manufacturing and value chain workflows includes a cloud-based metal additive manufacturing management platform including an artificial intelligence system configured to learn on a training set of outcomes, parameters, and data collected from one or more additive manufacturing nodes to optimize additive manufacturing and value chain processes and workflows. The information technology system includes a distributed ledger system configured to store data related to the manufacturing nodes.

Shaped glasses have curved surface lenses with spectrally complementary filters disposed thereon. The filters curved surface lenses are configured to compensate for wavelength shifts occurring due to viewing angles and other sources. Complementary images are projected for viewing through projection filters having passbands that pre-shift to compensate for subsequent wavelength shifts. At least one filter may have more than 3 primary passbands. For example, two filters include a first filter having passbands of low blue, high blue, low green, high green, and red, and a second filter having passbands of blue, green, and red. The additional passbands may be utilized to more closely match a color space and white point of a projector in which the filters are used. The shaped glasses and projection filters together may be utilized as a system for projecting and viewing 3D images.

A wavelength conversion module and a manufacturing method thereof are provided. The wavelength conversion module includes a wavelength conversion substrate, a driving assembly, and a polymer adhesive ring. The driving assembly is connected to the wavelength conversion substrate to drive the wavelength conversion substrate to rotate around an axis of the driving assembly. The polymer adhesive ring is disposed on the wavelength conversion substrate.

A light-source device includes an excitation light source to emit first color light; an optical member having a reflecting surface to reflect the first color light; a wavelength conversion unit including a wavelength conversion member on which the first color light reflected by the optical member is incident, the wavelength conversion member to convert at least part of the first color light into second color light having a wavelength different from a wavelength of the first color light and emit the second color light; and a light condensing element to condense the first color light emitted from the wavelength conversion unit. A straight line including a first optical path from a center of a flux of light rays emitted from the excitation light source, to the center of the first color light on the reflecting surface does not intersect with a light flux condensed by the light condensing element.

A light detection device includes: a first support part disposed on a mounting surface of the wiring board; a Fabry-Perot interference filter disposed in a first support region of the first support part; and a temperature detector, wherein the temperature detector is disposed on the mounting surface such that at least a part of the temperature detector overlaps a part of the Fabry-Perot interference filter when seen in a first direction perpendicular to the mounting surface and such that at least a part of the temperature detector overlaps a part of the first support part when seen in a second direction in which the first support part and the light detector are aligned with each other, and wherein a first distance between the temperature detector and the first support part in the second direction is smaller than a first width of the first support region in the second direction.

A wavelength conversion module includes a driving element, a wavelength conversion wheel, and at least one flow guide. The wavelength conversion wheel includes a rotary disc and at least one wavelength conversion layer. The driving element is connected to the rotary disc to drive the wavelength conversion wheel to rotate along an axis of the driving element as a central axis. The flow guide is disposed beside the wavelength conversion wheel at intervals along the axis, and at least one airflow channel is formed between the flow guide and the wavelength conversion wheel. The flow guide and the driving element are disposed at intervals, and the flow guide does not contact the rotary disc and the driving element. An orthographic projection of the flow guide on the rotary disc overlaps the wavelength conversion layer. When the wavelength conversion wheel rotates, the wavelength conversion wheel and the flow guide move relatively.

A wafer includes a substrate layer, a first mirror layer having a plurality of two-dimensionally arranged first mirror portions, and a second mirror layer having a plurality of two-dimensionally arranged second mirror portions. A plurality of Fabry-Perot interference filter portions are formed in an effective area, in each of the plurality of Fabry-Perot interference filter portions a gap is formed between the first mirror portion and the second mirror portion. A plurality of dummy filter portions are formed in a dummy area disposed along an outer edge of the substrate layer and surrounding the effective area, in each of the plurality of dummy filter portions an intermediate layer is provided between the first mirror portion and the second mirror portion. At least the second mirror portion is surrounded by the first groove in each of the plurality of Fabry-Perot interference filter portions and the plurality of dummy filter portions.

A wafer includes a substrate layer, a first mirror layer having a plurality of two-dimensionally arranged first mirror portions, and a second mirror layer having a plurality of two-dimensionally arranged second mirror portions. A plurality of Fabry-Perot interference filter portions are formed in an effective area, in each of the plurality of Fabry-Perot interference filter portions a gap is formed between the first mirror portion and the second mirror portion. A plurality of dummy filter portions are formed in a dummy area disposed along an outer edge of the substrate layer and surrounding the effective area, in each of the plurality of dummy filter portions an intermediate layer is provided between the first mirror portion and the second mirror portion. At least the second mirror portion is surrounded by the first groove in each of the plurality of Fabry-Perot interference filter portions and the plurality of dummy filter portions.

In described examples, a system (e.g., a microelectromechanical system) includes a substrate, a support coupled to the substrate and a first and second element. The first element includes a contactor spring having a first portion coupled to the support and having a second portion including a cavity having a sloped surface. A clearance from the sloped surface to the substrate is widened as the sloped surface extends away from the first portion. The second portion includes a first contact surface adjacent to the sloped surface. The second element is coupled to the substrate and has a second contact surface adjacent to the first contact surface. One of the first element and the second element is adapted: in a first direction to urge the first contact surface and the second contact surface together; and in a second direction to urge the first contact surface and the second contact surface apart.

In described examples, a system (e.g., a microelectromechanical system) includes a substrate, a support coupled to the substrate and a first and second element. The first element includes a contactor spring having a first portion coupled to the support and having a second portion including a cavity having a sloped surface. A clearance from the sloped surface to the substrate is widened as the sloped surface extends away from the first portion. The second portion includes a first contact surface adjacent to the sloped surface. The second element is coupled to the substrate and has a second contact surface adjacent to the first contact surface. One of the first element and the second element is adapted: in a first direction to urge the first contact surface and the second contact surface together; and in a second direction to urge the first contact surface and the second contact surface apart.