Abstract: A passive infrared motion detection sensor that includes a Fresnel focusing arrangement that creates at least a first infrared sensing region, a second infrared sensing region, and a third infrared sensing region, in which target detection in one or more infrared sensing regions is weighted to be distinguishable from target detection in remaining infrared sensing regions. The Fresnel focusing arrangement creates the weighted infrared sensing regions using a lenslet region, an optically opaque region and a plurality of extruded cylindrical lenslets that extend across a portion of both the lenslet region and the optically opaque region. The signal detection in at least the second weighted infrared sensing region, for example, an infrared sensing range between 6 and 10 feet, is weighted to easily distinguish between a pet within the second infrared sensing range and a person at any infrared sensing range.

Abstract: Various arrangements for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector are present. Multiple modes of the smoke detector may be used in which a first wavelength of electromagnetic radiation is emitted into a smoke chamber while a second electromagnetic radiation emitter is disabled, a period of time is waited, and a second wavelength of electromagnetic radiation is emitted into the smoke chamber while the first emitter is disabled. Depending on the mode of the smoke detector, the period of wait time may be varied.

Abstract: Embodiments are directed to managing multiple different types of applications using service groups. In one scenario, a computer system receives an indication of one or more application dependencies and characteristics that are to be implemented when an application is provisioned on a distributed host computer system. The computer system creates an application manifest that declaratively defines application dependencies and characteristics for various different service groups. Each service group includes applications that match the declaratively defined application dependencies and characteristics. The computer system also sends the manifest to the distributed host computer system which loads those applications that fit the manifest criteria onto available nodes of the distributed host computer system according to the service groups specified in the manifest.

Abstract: Disclosed herein are optical assemblies having thin, low profile shapes. These optical assemblies may be used with fiber coupled lasers and other light sources, including high power sources, to irradiate tissue at a wavelength suitable for inducing ablation or coagulation to a target depth, denaturation, thermal modification of a tissue, and/or preferential injury to a target tissue structure. Example optical assemblies can produce substantially uniform illumination patterns that are useful for treating superficial tissue, including the internal or luminal (e.g., esophageal) tissue. Some examples may have capability for cooling superficial tissue or skin, such as a detachable, reusable heat sink for active cooling without consumables, fluid pumps, or other cooling equipment.

Abstract: A head mounted display (“HMD”) includes a display module that displays a primary viewing image at a focus distance. The display module also displays a focusing cue image at the focus distance to aid a user of the HMD in focusing on the primary viewing image at the focus distance.

Abstract: A cold chassis and method of making a cold chassis for electronic modules featuring the fabrication of individual brazed cooling ribs each including microchannels along the length thereof and a peripheral flange. A set of adjacent ribs are secured together and assembled onto at least one face of a frame member. The rib flanges are sealed (e.g., friction stir welded) with respect to the frame member.

Abstract: A coolant distribution structure for an MMIC having: an input/output layer with an input port for receiving a coolant for transmission to coolant channels in the MMIC and an output port for exiting the coolant after such coolant has cooled active devices in the MMIC, a coolant pass-through layer to receive the coolant from the input port and having structure to inhibit such received coolant from passing directly to the output port, a coolant distribution layer for receiving coolant passing from the coolant pass-through layer and distributing such received coolant to the cooling channels to absorb heat generated by the active devices and then directing heated coolant to the coolant distribution layer and out of the porting layer via the passthrough layer. The coolant pass-through layer has a structure configured to inhibit such heated coolant from passing directly to the input port prior to such heated absorbed coolant being transmitted to the output port.

Abstract: An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location and emitting the display light at a viewing region. The light guide component includes an eye-ward facing surface having a reflection portion and a viewing portion, a folding surface oriented to reflect the display light received into the light guide component to the reflection portion of the eye-ward facing surface, and a first interface surface oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface. A partially reflective layer is disposed on the first interface surface in the viewing region to reflect the display light through viewing portion of the eye-ward facing surface.

Abstract: Various arrangements for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector are present. Multiple modes of the smoke detector may be used in which a first wavelength of electromagnetic radiation is emitted into a smoke chamber while a second electromagnetic radiation emitter is disabled, a period of time is waited, and a second wavelength of electromagnetic radiation is emitted into the smoke chamber while the first emitter is disabled. Depending on the mode of the smoke detector, the period of wait time may be varied.

Abstract: A passive infrared motion detection sensor that includes a Fresnel focusing arrangement that creates at least a first infrared sensing region, a second infrared sensing region, and a third infrared sensing region, in which target detection in one or more infrared sensing regions is weighted to be distinguishable from target detection in remaining infrared sensing regions. The Fresnel focusing arrangement creates the weighted infrared sensing regions using a lenslet region, an optically opaque region and a plurality of extruded cylindrical lenslets that extend across a portion of both the lenslet region and the optically opaque region. The signal detection in at least the second weighted infrared sensing region, for example, an infrared sensing range between 6 and 10 feet, is weighted to easily distinguish between a pet within the second infrared sensing range and a person at any infrared sensing range.

Abstract: A coolant distribution structure for an MMIC having: an input/output layer with an input port for receiving a coolant for transmission to coolant channels in the MMIC and an output port for exiting the coolant after such coolant has cooled active devices in the MMIC, a coolant pass-through layer to receive the coolant from the input port and having structure to inhibit such received coolant from passing directly to the output port, a coolant distribution layer for receiving coolant passing from the coolant pass-through layer and distributing such received coolant to the cooling channels to absorb heat generated by the active devices and then directing heated coolant to the coolant distribution layer and out of the porting layer via the pass-through layer. The coolant pass-through layer has a structure configured to inhibit such heated coolant from passing directly to the input port prior to such heated absorbed coolant being transmitted to the output port.

Abstract: A lightguide assembly including structures to provide for outcoupling of light from an internal reflection structure. In an embodiment, a lightguide assembly includes light transmissive bodies forming respective corrugations which are coupled to one another. Optical coatings are variously disposed between the respective corrugations, wherein the optical coatings provide for redirection of light from the lightguide assembly. In another embodiment, optical coatings are each applied to a respective one of alternate facets of a corrugation. Polymer film portions provide mechanical support for the optical coatings during application to the corrugation.

Abstract: Various embodiments of a smoke chamber for a smoke detector are presented. Such a smoke chamber may include a housing, having a first portion and a second portion. The first portion may be through which an electromagnetic sensor and two or more electromagnetic emitters interact with an airspace within the housing. The second portion may have an airflow surface that at least partially defines a curved airflow path between the airspace within the housing and an external environment. The curved airflow path may curve radially outward.

Abstract: Various arrangements for using multiple wavelengths of electromagnetic radiation to detect smoke by a smoke detector are present. Multiple modes of the smoke detector may be used in which a first wavelength of electromagnetic radiation is emitted into a smoke chamber while a second electromagnetic radiation emitter is disabled, a period of time is waited, and a second wavelength of electromagnetic radiation is emitted into the smoke chamber while the first emitter is disabled. Depending on the mode of the smoke detector, the period of wait time may be varied.

Abstract: A system for measuring transparent optical elements includes a beam generator, optomechanics, an imaging module, and a logic unit. The beam generator is driven to emit a beam directed at a transparent optical element that is aligned by optomechanics. An image is captured of the beam after the beam reflects off of surfaces of the transparent optical element. The image is analyzed to measure tolerances of the transparent optical element.

Abstract: A transactional replicator applying group commit and barrier concepts is disclosed. Group commit means that the transactional replicator commits multiple transactions in a group and is not restricted to committing single transactions one-at-a-time and is not limited to operating on a single state provider. Barrier means that the transactional replicator does not move forward to commit additional transactions until the previous group of transactions are completed. All state providers must apply their transactions and update state before additional transactions will be committed. A quorum acknowledgement “unlocks” any locks that were acquired to update the state within a state provider. However, as long as there are no lock conflicts, additional transactions can continue to create new group commits as necessary.

Abstract: In various implementations, methods and systems resource balancing in a distributed computing environment are provided. A client defined resource metric is received that represents a resource of nodes of the cloud computing platform. A placement plan for job instances of service applications is generated. The placement plan includes one or more movements that are executable to achieve a target placement of the job instances on the nodes. It is determined that the placement plan complies with placement rules. Each placement rule dictates whether a given job instance of the job instances is suitable for placement on a given node of the nodes. The placement plan is executed based on determining that the target placement of the job instances improves balance of resources across the nodes of the cloud computing platform based on the resource represented by the client defined resource metric.

Abstract: An apparatus for testing transmittance includes a sample unit to position a material under test. The material under test is disposed between respective flat surfaces of a first mount and a second mount, which are positioned in the sample unit for a test round. The sample unit defines a first volume and a second volume, wherein arc shapes, variously formed by respective surfaces of the first and second volume, conform to an imaginary circle. During the test round, a rotation unit successively changes an angular position of the MUT relative to a light source. A light detector receives light from the light source which has been transmitted through the first volume, the MUT and the second volume. Based on the received light, a transmittance signature of the MUT is determined for a range of incidence angles.

Abstract: An eyepiece for a head wearable display includes a light guide component for guiding display light received at a peripheral location offset from a viewing region and emitting the display light along an eye-ward direction in the viewing region. The light guide component includes an input surface oriented to receive the display light into the light guide component, an eye-ward facing surface having a reflection portion and a viewing portion, a folding surface oriented to reflect the display light received through the input surface to the reflection portion of the eye-ward facing surface, and a first interface surface oriented to receive the display light reflected from the reflection portion of the eye-ward facing surface. A partially reflective layer is disposed on the first interface surface in the viewing region to reflect the display light along the eye-ward direction through viewing portion of the eye-ward facing surface.

Abstract: An optical apparatus includes a transparent microdisplay and a curved mirror. The transparent microdisplay has an array of self-illuminating emitters configured to emit image light propagating in an external direction. The curved mirror is positioned to reflect the image light toward an eye-ward side of the optical apparatus. A first curvature of the curved mirror has an optical power configured to focus the image light reflected by the curved mirror within an eyebox sized area. The transparent microdisplay is disposed between the curved mirror and the eyebox sized area.