An optical isolator is provided. The optical isolator includes a printed circuit board having a first surface and a second surface opposite the first surface. The printed circuit board has a recess extending only partially through the board. The first photoelement has an active surface and is mounted relative to the first surface of the printed circuit board. A second photoelement has an active surface and is mounted relative to the second surface. The second photoelement is configured to interact with the first photoelement. At least one of the first and second photoelements has its active surface disposed at least partially in the recess. A portion of the printed circuit board is interposed between the first and second photoelements.

The invention relates to a device for simultaneous fluorescence contrasting effect in transmitted light and reflected light, having a reflected light optical path for focusing of the excitation light via a lens onto a sample, having a fluorescence signal, which extends from the sample and is directed onto the same lens, having a dichroite, an emission filter, and a detection unit for the purpose of separating the excitation light from the fluorescence signal and for detection, having a luminescent layer behind the sample and a diaphragm for partial coverage of the excitation optical path between the sample and the luminescent layer, whereby a part of the excitation optical path, which impinges onto the luminescent layer, emits light, which irradiates the sample past the diaphragm by forming an oblique transmitted light illumination.

Embodiments of the present disclosure provide a method and system for dynamically controlling a current that is applied to a light source of an optical encoder.

A laser scanner which includes a transmission subsystem and a reception subsystem. The transmission subsystem includes a light source which emits a light beam and a scanning mirror rotatable about an axis which reflects the light beam toward a scanning area and which directs return light from objects toward the reception subsystem. The reception system may include a collecting mirror dimensioned and positioned to receive the return light from the scanning mirror. The reception system may also include a dichroic or interference filter disposed between the collecting mirror and the scanning mirror. The interference filter filters the return light from the scanning mirror and provides the filtered return light to the collecting mirror. The reception subsystem also includes a light detector disposed between the interference filter and the collecting mirror, in operation the light detector receives the filtered return light reflected from the collecting mirror.

A microscope is disclosed, the microscope having a light source defining an optical axis along a Z direction and a detector disposed in X-Y direction, orthogonal to the optical axis, the detector configured to capture images of an object. The microscope includes a fluid channel having an inlet and an outlet configured with a fluid flow to transport the object from the inlet to the outlet. The detector is configured to capture a plurality of images of the object as the object moves from the inlet to the outlet. The plurality of images of the object may have different heights of the sample with respect to the detector as the sample flows through the channel. The channel may be tilted with respect to the optical axis. The detector may be tilted with respect to the optical axis.

An optical isolator includes: an input-side lens converting an operating light incident in a forward direction via an optical fiber input end into parallel light beams; an input-side polarizer disposed on a right hand of the input-side lens; a Faraday rotator rotating a polarization plane of the operating light having been converted into the parallel light beams; an output-side polarizer disposed on an output side of the Faraday rotator; an output-side lens transmitting the operating light having passed through the output-side polarizer; an optical filter blocking light leakage and transmitting the operating light; an optical fiber output end that the operating light exits; and a housing accommodating the input-side lens, the input-side polarizer, the Faraday rotator, the output-side polarizer, the output-side lens, the optical filter and the optical fiber output end therein to enclose them.

A photosensor is provided with a sensor circuit assembly. The sensor circuit assembly includes alight emitter, a light receiver, a light-emitter support, a light-receiver support, and a connecting part. The light emitter and the light receiver face each other. The light-emitter support extends from and supports the light emitter. The light-receiver support extends from and supports the light receiver. The connecting part connects one end of the light-emitter support with one end of the light-receiver support. The connecting part includes a seal and a connection terminal that protrudes from the seal. The connection terminal includes a first press-contact part, and a first pressure part that presses the first press-contact part in a press-contact direction.

The invention concerns a device for locally measuring strains within a measurement volume that comprises a test body formed from a homogeneous material of known mechanical properties and ellipsoidal in shape intended to be included in the measurement volume, at least one measurement optical fiber for measuring deformation embedded within said test body and means for linking the at least one measurement optical fiber to a system designed to stimulate the at least one measurement optical fiber, detect signals coming from the fibers and, by means of an electronic system capable of carrying out calculations, determine strains from at least one of the detected signals and known mechanical properties.

In a photoelectric conversion device, the potential control unit controls electric potentials applied to the meta-surface. The meta-surface includes a plurality of patterns which are space away from each other. The plurality of patterns include an antenna portion and at least one bias portion. The antenna portion extends in a predetermined direction and emits the electron in response to incidence of the electromagnetic wave. The potential control unit switches a first state and a second state by controlling the electric potentials applied to the plurality of patterns. In the first state, a component of an electric field from the bias portion toward the antenna portion in a predetermined direction is positive. In the second state, a component of an electric field from the bias portion toward the antenna portion in the predetermined direction is negative.

In a photoelectric conversion device, the potential control unit controls electric potentials applied to the meta-surface. The meta-surface includes a plurality of patterns which are space away from each other. The plurality of patterns include an antenna portion and at least one bias portion. The antenna portion extends in a predetermined direction and emits the electron in response to incidence of the electromagnetic wave. The potential control unit switches a first state and a second state by controlling the electric potentials applied to the plurality of patterns. In the first state, a component of an electric field from the bias portion toward the antenna portion in a predetermined direction is positive. In the second state, a component of an electric field from the bias portion toward the antenna portion in the predetermined direction is negative.