Methods and apparatus for measuring light intensity are disclosed. The methods and apparatus can be used to verify an article, such as a reaction chamber. Exemplary apparatus include a first arm, a light source coupled to the first arm, a second arm, and a sensor coupled to the second arm. The sensor can receive light from the light source that is transmitted through at least a portion of the article.

Stack fault inspection apparatus and method are disclosed. The apparatus includes a sample stage fixing the silicon carbide substrate and allow the incident light to scan the substrate surface; an incident light source configured to irradiate a vertical illumination light of a wavelength corresponding to an energy greater than a band gap energy of the substrate to at least a portion of a surface of the substrate in a direction substantially perpendicular to the surface of the substrate; a photomultiplier tube (PMT) configured to obtain a photoluminescence mapping image having a wavelength corresponding to the band gap energy of the substrate from the surface of the substrate; and a controller configured to process the mapping image and identify stacking faults.

A multi-mode illumination system, including: a first illumination module; a second illumination module; and a third illumination module, as disclosed herein.

An alignment platform for use with an imaging device includes an outer stage, an inner stage disposed within the outer stage and flexibly coupled to the outer stage, and a central frame disposed within the inner stage and flexibly coupled to the inner stage. The central frame is configured to support an object being imaged. The inner stage and the central frame are movable relative to the outer stage along a first axis and the central frame is movable relative to outer stage and the inner stage along a second axis that is perpendicular to the first axis.

A system for monitoring the cardiopulmonary functioning of a person includes a remote terminal and a sensor module configured to be worn by the person. The sensor module includes at least one physiological sensor configured to sense the following types of physiological information generated by the person: pulse rate, blood flow, and blood pressure; at least one signal processor configured to process signals generated by the at least one physiological sensor; and at least one transmitter responsive to the at least one signal processor that is configured to transmit at least one signal to the at least one remote terminal. The at least one signal processor is configured to focus processing resources on one of the types of physiological information in response to a specified preference by the person.

Wearable apparatus for monitoring various physiological and environmental factors are provided. Real-time, noninvasive health and environmental monitors include a plurality of compact sensors integrated within small, low-profile devices, such as earpiece modules. Physiological and environmental data is collected and wirelessly transmitted into a wireless network, where the data is stored and/or processed.

An earpiece monitor configured to be worn by a subject includes a battery, an earpiece fitting configured to be inserted within an ear canal of an ear of the subject, a reflective pulse oximeter configured to measure pulse rate and pulse intensity of the subject, a motion sensor configured to monitor footsteps and head motion of the subject, a digital memory for storing at least one algorithm, and a processor configured to process signals from the reflective pulse oximeter and the motion sensor using the at least one algorithm to generate as assessment of a health state of the subject. The earpiece fitting is configured to transmit sound to the inner ear or eardrum of the subject. The assessment of the health state of the subject may include an assessment of subject physiological stress and/or an assessment of overall subject health.

A sample rotating rack and a Raman spectrum detector. The sample rotating rack comprises a rotating body (1) and a plurality of sample carriers provided thereon. The plurality of sample carriers are distributed around the circumference of the rotating body (1) and can be irradiated by light rays located at the periphery of the rotating body (1). The sample rotating rack is provided with as many sample carriers as possible in a space as small as possible, and optical irradiation can be quickly conducted on a plurality of samples by rotating the rotating body (1). The Raman spectrum detector comprises a laser (6), a spectrum analyzer (7), a Raman probe (10), a rotating table (8) and a sample rotating rack; the sample rotating rack is arranged on the rotating table (8), the Raman probe (10) is arranged at the periphery of the sample rotating rack, and the Raman probe (10) is electrically connected to the laser (6) and the spectrum analyzer (7) respectively; and the laser (6) is used for emitting excitation light by means of the Raman probe (10), and the Raman probe (10) can receive Raman scattered light and return same to the spectrum analyzer (7). The Raman spectrum detector can rapidly perform optical analysis and test on a plurality of samples, and the operation is simple and the test efficiency is high.

Analyte survey systems (100) and related techniques are provided to improve the operation of handheld or unmanned mobile sensor or survey platforms. An analyte survey system includes a logic device (112) configured to communicate with a communication module (164) and a sensor assembly (166) of a modular sensor core (160), where the communication module is configured to establish a wireless communication link with a base station (130) associated with the modular sensor core and/or a mobile sensor platform (110) and the sensor assembly is configured to provide analyte sensor data as the modular sensor core is maneuvered within a survey area.

Inspection methods, apparatuses, and techniques are described herein for identifying defects in a plugged honeycomb body (100). The inspection apparatuses and methods herein utilize reduced distortion imaging to identify the defects in the plugged honeycomb body. Backlit and/or directly illuminated images (by e.g. first light source 308) of the plugged honeycomb body (100) can be captured (by e.g. camera 302) and analyzed to align (by e.g. actuators 306) the plugged honeycomb body (100) in an imaging apparatus and to identify the defects.