A portable modular unit for inspecting in a timepiece the presence of a lubricating agent, or of an epilame, having fluorescent markers, from an excitation luminous flux of white light. The modular unit includes an optical housing, forming a first module, a portable white light source (200) emitting an excitation luminous flux, forming a second module, a portable magnifying device, forming a third module. The optical housing includes a first mounting interface for removably mounting the portable white light source on the optical housing, the first mounting interface being configured so that the excitation luminous flux emitted by the portable white light source is directed in the direction of the excitation filter; and a second mounting interface for removably mounting the portable magnifying device on the optical housing, the second mounting interface being configured so that the magnifying device is opposite the inspection opening.

A method of using an automated system to position a fabric piece. A pattern is printed onto a fabric piece with fluorescent ink, and detected with a fluorescence-detecting camera, such as a UV camera. The detected pattern is stored in a controller as a pattern signature and compared to a stored target pattern. The results of the comparing step are used to generate control signals for the automated system to move the piece into the position of the target pattern.

A dental hand-held device (100), including a curing device (101) for curing a dental restauration material (103) with light in a first wavelength range; and a fluorescence excitation device (105) for exciting fluorescence of dental substance (107) with light in a second wavelength range.

A method of forming a colorimetric sensor includes depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, the first material attaching the sensing particles to the substrate with at least a portion of the sensing particles is exposed to an ambient environment.

A process for detecting oil or lubricant contamination in a manufactured product, the process comprising adding at least two fluorescent taggants to oils or lubricants contained in processing machinery for said product, irradiating said product, causing at least one of said taggants to fluoresce and detecting radiation emitted by said fluorescing taggant in an oil-contaminated product.

Disclosed are methods for detecting a presence or absence of an antimicrobial surface coating including applying at least one detectable fluorophoric dye compound to a substrate, irradiating the surface of the substrate with ultraviolet radiation in the 100-415 nm wavelength range to excite the detectable fluorophoric dye compound, observing fluorescence of the excited fluorophoric dye compound, and determining the presence or absence of the antimicrobial surface coating based on the observed fluorescence. Further disclosed are antimicrobial surface coating solutions, methods for their application, and methods for confirming the presence and coverage of antimicrobial surface coatings.

A portable ring-type fluorescence optical system for observing microfluidic channel and an operating method thereof are disclosed. The portable ring-type fluorescence optical system includes a photographic chip, a first polarizer, an objective lens, a ring-type fluorescent light source, a biological sample on a microfluidic chip, a second polarizer and a bottom illumination light source arranged in order from top to bottom. The ring-type fluorescent light source is used to generate a ring-type fluorescent light to the biological sample on the microfluidic chip. The objective lens is used to magnify a fluorescent image of the biological sample on the microfluidic chip to focus on the photographic chip. The first polarizer disposed under the photographic chip and the second polarizer disposed under the biological sample form a non-zero angle to each other to block reflected lights that the biological sample reflects the lights emitted by the bottom illumination light source.

A system and method for an imaging circadiometer that measures the spatial distribution of eye-mediated, non-image-forming optical radiation within the visible spectrum.

A colorimetric sensor has a first material deposited on a surface, and sensing particles on a surface of the first material, wherein the sensing particles comprise sensing species dispersed into porous host structures, such that at least a portion of the sensing particles is exposed to an ambient environment, wherein the first material attaches the sensing particles to surface. A method of forming a colorimetric sensor including depositing a first material onto a substrate, providing porous sensing particles, wherein the sensing particles comprise sensing species dispersed into a porous host structure, and embedding the porous sensing particles onto a surface of the deposited first material, wherein the first material attaches the sensing particles to the substrate such that at least a portion of the sensing particles is exposed to an ambient environment.

A portable ring-type fluorescence optical system for observing microfluidic channel and an operating method thereof are disclosed. The portable ring-type fluorescence optical system includes a photographic chip, a first polarizer, an objective lens, a ring-type fluorescent light source, a biological sample on a microfluidic chip, a second polarizer and a bottom illumination light source arranged in order from top to bottom. The ring-type fluorescent light source is used to generate a ring-type fluorescent light to the biological sample on the microfluidic chip. The objective lens is used to magnify a fluorescent image of the biological sample on the microfluidic chip to focus on the photographic chip. The first polarizer disposed under the photographic chip and the second polarizer disposed under the biological sample form a non-zero angle to each other to block reflected lights that the biological sample reflects the lights emitted by the bottom illumination light source.