Provided is an evaluation method for a biological tissue that enables dynamics of the biological tissue to be quantitatively evaluated. In the evaluation method of the present embodiment, an optical coherence tomography (OCT) signal indicating a state of a biological tissue provided as a sample is acquired, a signal value based on the OCT signal is acquired at an observation point in the sample, and a temporal variation characteristic value indicating a temporal variation characteristic of the signal value within a predetermined period is calculated. The present embodiment can also be implemented with an evaluation device or even with a program.

Provided is an evaluation method for a biological tissue that enables dynamics of the biological tissue to be quantitatively evaluated. In the evaluation method of the present embodiment, an optical coherence tomography (OCT) signal indicating a state of a biological tissue provided as a sample is acquired, a signal value based on the OCT signal is acquired at an observation point in the sample, and a temporal variation characteristic value indicating a temporal variation characteristic of the signal value within a predetermined period is calculated. The present embodiment can also be implemented with an evaluation device or even with a program.

A system for imaging, including a source of coherent light; a polarization state generator for generating polarized optical photons from the light originating in the source of coherent light; a sample environment; a polarization state analyzer for permitting photons having a desired polarization to interact with a detector; and an imaging unit for generating an image based on the interactions of the photons with the detector. The sample environment includes a plurality of electromagnets, each connected to one or more power supply components; and a controller, connected to the electromagnets and including software for generating and controlling a desired magnetic field created by each of the electromagnets in concert with each other.

A method and system for stress engineering of a transparent material can include an imaging system that can visualize a spatial distribution of an internal stress in a transparent material, an actuator system that can induce stress in the transparent material, the actuator system comprising one or more actuator elements, and a feedback system that can communicate with the imaging system and the actuator system, and which can guide an internal stress distribution in the transparent material toward a preferred final state.

An actuator is provided that includes a housing, a linear actuating shaft disposed within the housing, a piston coupled with the shaft, and a fluid barrier disposed on an end of the shaft and encircled by the piston. The piston is movable longitudinally between an extended configuration and a retracted configuration upon rotation of the shaft. The fluid barrier engages an inner surface of the piston preventing fluid communication across the fluid barrier. The fluid barrier has a shaft engaging side which receives the shaft and a fluid facing side. A cavity is formed between the piston and the fluid facing side and expands when the piston moves to the extended configuration and contracts when the piston moves to the retracted configuration. A port is disposed in the piston and extends from the cavity to external the piston thereby permitting fluid communication between the cavity and external the piston.

The inspection apparatus includes: a linear polarizer and a wave plate generating polarized light from light emitted from a light source; a polarization camera imaging the polarized light generated by the linear polarizer and the wave plate and transmitted through a molding product; and a determination unit determining a state of the molding product using an image captured by the polarization camera.

The inspection apparatus includes: a linear polarizer and a wave plate generating polarized light from light emitted from a light source; a polarization camera imaging the polarized light generated by the linear polarizer and the wave plate and transmitted through a molding product; and a determination unit determining a state of the molding product using an image captured by the polarization camera.

A novel detection system and method is presented, where a two-bead receptor method is used for capturing pathogens, with one type of bead being magnetic and having a size of 3 microns or smaller, and the other type being polymeric and having a size of 3 microns or larger. The first type is used to concentrate a pathogen; the latter is used to create a detectable signal. Fast sensitive detection is achieved by collecting the optical signal created by the distortion of a homeotropically aligned chromonic azo dye in the presence of captured pathogens.

A method for determining a retardance of a layer of a sample. The method includes: transmitting a first portion of a polarized light to a sample arm of an optical system and a second portion of the polarized light to a reference arm of the optical system; combining first return light returned from the sample arm and second return light from the reference arm; detecting, using a detector, the combined light along a first polarization state and a second polarization state to produce polarization data, the second polarization state being different from the first polarization state; determining, using a processor coupled to the detector, polarization states of light returning from upper and lower surfaces of a layer of the sample based on detecting the combined light; and determining, using the processor, a retardance of the layer of the sample based on the determined polarization states.

A method for determining a retardance of a layer of a sample. The method includes: transmitting a first portion of a polarized light to a sample arm of an optical system and a second portion of the polarized light to a reference arm of the optical system; combining first return light returned from the sample arm and second return light from the reference arm; detecting, using a detector, the combined light along a first polarization state and a second polarization state to produce polarization data, the second polarization state being different from the first polarization state; determining, using a processor coupled to the detector, polarization states of light returning from upper and lower surfaces of a layer of the sample based on detecting the combined light; and determining, using the processor, a retardance of the layer of the sample based on the determined polarization states.