摘要:
An optical identification element for identifying an item. The optical identification element includes a binder material and one or more materials embedded in the binder material. The one or more materials provides an encoded composite X-ray diffraction pattern when illuminated by an X-ray beam. The encoded composite X-ray diffraction pattern is indicative of the item.
摘要:
A reconfigurable optical blocking filter deletes a desired optical channel(s) from an optical WDM input signal, and includes a spatial light modulator having a micro-mirror device with a two-dimensional array of micro-mirrors that tilt between first and second positions in a “digital” fashion in response to a control signal provided by a controller in accordance with a switching algorithm and an input command. A collimators, diffraction grating, and Fourier lens, collectively collimate, separate and focus the optical input channels onto the array of micro-mirrors. The optical channel is focused on the micro-mirrors onto a plurality of micro-mirrors of the micro-mirror device, which effectively pixelates the optical channels. To delete an input channel of the optical input signal, micro-mirrors associated with each desired input channel are tilted to reflect the desired input channel away from the return path.
摘要:
An optical reader system including a source light assembly that has a code-reading beam and a fluorescence-excitation beam that are configured to illuminate encoded substrates. The substrates have optically readable codes that provide output signals when the code-reading beam is incident thereon. The output signals are indicative of the codes. The reader system also includes a fluorescence detector that is configured to detect fluorescent signals from the substrates and code pickup optics that are configured to project the output signals from the optically readable codes onto a Fourier plane. The reader system also includes a code detector that is positioned to detect the output signals in the Fourier plane.
摘要:
An optical reader system that includes a plurality of substrates. The substrates have an optically readable code disposed therein and a source light assembly that is configured to illuminate the substrates with a code-reading beam and another beam for detecting another optically readable property of the substrate. The code-reading beam and the other beam form beam spots on the substrates that have different shapes. The system also includes a reader that is configured to receive output signals from the code-reading beam and the other beam when the substrates are illuminated. The output signals from the code-reading beam are indicative of the code.
摘要:
A method of identifying an analyte. The method includes providing a plurality of microparticles. The microparticles have optically detectable codes extending along bodies of the corresponding microparticle. The microparticles have the chemical probes attached thereto. Each of the chemical probes is associated with a corresponding one of the codes. The method also includes selectively binding target analytes to the chemical probes on the microparticles to produce labeled microparticles and distributing the labeled microparticles to random locations of a substrate. The method also includes determining the codes for the labeled microparticles in the random array and code positions of the codes in the random array. The method further includes detecting the label on the labeled microparticles in the random array and label positions of the labels in the random array. The method also includes using the code positions and the label positions to analyze the target analyte.
摘要:
An encoded microparticle including an optical substrate comprising a material that permits light to propagate therethrough. The optical substrate has an elongated body that extends in a direction along a central axis. The optical substrate includes an outer region that extends about the central axis. The encoded microparticle also includes an optically detectable code that is disposed within the optical substrate and extends along the central axis. The outer region surrounds the optically detectable code about the central axis. The optically detectable code is readable when the light propagates through the outer region and is at least one of reflected or filtered by the optically detectable code. Said at least one of reflected or filtered light propagates through the outer region to be detected for reading the optically detectable code.
摘要:
An encoded microparticle including an optical substrate including a material that permits light to propagate therethrough. The optical substrate has an elongated body that extends in a direction along a central axis. The optical substrate includes an outer region that extends about the central axis. The encoded microparticle also includes an optically detectable code that is disposed within the optical substrate and extends along the central axis. The outer region surrounds the optically detectable code about the central axis. The optically detectable code is readable when the light propagates through the outer region and is at least one of reflected or filtered by the optically detectable code. Said at least one of reflected or filtered light propagates through the outer region to be detected for reading the optically detectable code.
摘要:
A method of identifying analytes that react with probes on encoded particles. The method includes providing a support substrate that has a plurality of the particles randomly distributed on the support substrate. The particles have elongated bodies with codes that extend along the corresponding bodies. The codes identify probes that are attached to the corresponding bodies, wherein at least some of the probes include fluorescent labels from reactions with the analytes. The method also includes detecting fluorescent signals that are emitted from the fluorescent labels. The fluorescent signals emit from random spatial locations along the support substrate. The method also includes detecting the codes of the particles at the random spatial locations along the support substrate and analyzing the codes and the fluorescent signals to identify the analytes that react with the probes on the particles.
摘要:
A method for fabricating microparticles. The method includes providing a removable substrate that has a photosensitive material. The substrate has a plurality of inner regions. Each inner region surrounds a corresponding outer region. The method also includes providing at least one optically detectable code within at least one of the inner regions of the substrate and etching lines into the substrate to create a plurality of microparticles having at least one optically detectable code therein. The microparticles have elongated bodies that extend in an axial direction. The optically detectable codes extend in the axial direction within the microparticles.
摘要:
A composition including an optical substrate removably attached to an item. At least a portion of the substrate has a diffraction grating embedded therein or thereon. The grating has a resultant refractive index variation at a grating location. The grating provides an output optical signal indicative of a code when illuminated by an incident light signal.