Abstract: The invention provides apparatuses and systems for cutting off electromagnetic radiation (ER) beams, such as laser beams. The apparatuses and systems employ gravitational force on a shutter to close off the path of the ER beam if power is cut to an electromagnet holding the shutter out of the beam path. Power to the electromagnet is typically connected to a safety interlock connected to a door or other entry point to an enclosure in which the ER beam is being used. Additionally, the invention provides add-on devices that allow the ER beam to be blocked to change lenses or targets.

Abstract: An assembly for switching optical paths, which assembly includes multiple optical channels for guiding an illuminating light to a specimen and for guiding the light coming from the specimen to an image recording unit. The assembly also includes a plurality of light guiding mirrors and at least one light modifying element in each optical channel for directing the illuminating light and the light coming from the specimen. In each of the multiple optical channels the at least one light modifying element includes a stationary dichroic mirror. Further details regarding the arrangement and rotation of the mirrors, and how the mirrors direct the illuminating light and light coming from the specimen, are defined herein.

Abstract: A terminal device having a camera module having an optical camera lens is provided. The optical camera lens includes: a lens barrel having an axis and a lens barrel side face surrounding the axis, wherein the lens barrel side face includes a first side and a second side opposite to the first side and a lens sheet set mounted in the lens barrel and including a plurality of lenses, wherein the plurality of lenses include at least one free-form lens, and the at least one free-form lens is adapted to deflect incident light toward the second side, so that an imaging plane of an optical system composed of the plurality of lens sheets is deflected toward the second side.

Abstract: Provided is a reticle unit 40 that includes a reticle 41 with a sight line 410, and an optical fiber 42 that forms a dot by guiding light from a light source to a center 410a of the sight line 410, wherein a light incident portion 42a for receiving light is formed at one end of the optical fiber 42, a light-emitting portion 42b for emitting light is formed at the other end 42b of the optical fiber 42, the light incident portion 42a has a spherical surface having a diameter greater than that of the optical fiber 42, the light-emitting portion 42b has an inclined surface that reflects light passing through the optical fiber 42, and the optical fiber 42 is fixed along a part of the sight line 410 so that the light-emitting portion 42b is positioned at the center 410a of the sight line 410.

Abstract: A Koehler integrator device includes a collimating lens for collimating a light field from an incoherent or partially coherent light source, planar first and second micro-lens arrays for relaying portions of the collimated light field along separate imaging channels, wherein all the micro-lenses have equal focal length and pitch and the arrays are arranged with a mutual distance equal to the focal length, and a collecting Fourier lens having a Fourier lens diameter and focal length defining front and back focal planes, wherein the Fourier lens is for superimposing light from all imaging channels in the front focal plane and wherein the second micro-lens array is in the back focal plane, wherein a third micro-lens array is in the front focal plane for creating a wavelength independent array of illumination spots. Furthermore, a confocal microscope apparatus, including the device, and a method of using the apparatus are described.

Abstract: A display includes a reflective spatial light modulator, an angularly varying diffusion film that that transmits and scatters light incident within a first angular range and transmits light un-deviated incident within a second angular range outside of the first angular range, and a frontlight including a light source positioned to emit light into a film with a light emitting region positioned between the reflective spatial light modulator and the varying angle diffusion film. In one embodiment light extracted in the light emitting region is incident on a spatial light modulating layer at an angle of peak luminous intensity less than 30 degrees in a second layer from the surface normal of the spatial light modulating layer, reflects from the reflective spatial light modulator, passes through the film, is scattered by the angularly varying diffusion film, and exits the display.

Abstract: A focusing device includes a substrate and a plurality of scatterers provided at both sides of the substrate. The scatterers on the both sides of the focusing device may correct geometric aberration, and thus, a field of view (FOV) of the focusing device may be widened.

Abstract: A band-pass near-infrared (NIR) filter has a glass substrate and at least one coating. The glass substrate has a scale factor that is smaller than 1500 kPa/K. The maximum internal stress of the glass substrate at an operating temperature TOT is smaller than 300 MPa. A method of production of such a band-pass NIR filter includes depositing a band-pass NIR coating that has alternating layers of high refractive index material and low refractive index material on at least one side of the glass substrate to form a coated glass substrate. Such a band-pass NIR filter can be used in an infrared sensor for object recognition.

Abstract: An augmented reality (AR) subsystem including one or more machine learning models, automatically overlays an augmented reality image, e.g., a border or outline, that identifies cells of potential interest, in the field of view of the specimen as seen through the eyepiece of an LCM microscope. The operator does not have to manually identify the cells of interest for subsequent LCM, e.g, on a workstation monitor, as in the prior art. The operator is provided with a switch, operator interface tool or other mechanism to select the identification of the cells, that is, indicate approval of the identification of the cells, while they view the specimen through the eyepiece. Activation of the switch or other mechanism invokes laser excising and capture of the cells of interest via a known and conventional LCM subsystem.

Abstract: Components of articles that include an optical element that imparts structural color to the component are provided. Methods of making the components including the optical element, and methods of using the components such as to make an article of manufacture are provided.

Abstract: Diffractive optical structures, lenses, waveplates, devices, systems, and methods, which have the same effect on light regardless of the polarization state of the light, utilizing systems of polarization discriminator diffractive waveplate optics and differential polarization converters with special arrangements that do not require introducing spatial separation between the layers.

Abstract: To simplify the optical calibration of an optical observation apparatus, a stand for an optical observation unit including a calibration object arranged directly on the stand in a fixed location is specified. Moreover, an optical observation apparatus, which includes such a stand and an optical observation unit connected to the stand, a method for calibrating such an optical observation apparatus, and a computer program are specified.

Abstract: A light microscope having a scanner for scanning a sample with illuminating light and a light detector for measuring sample light. A microlens array having a plurality of microlenses is arranged in front of the light detector in the region of a pupil plane. The light detector respectively has a plurality of detector elements behind each microlens and has a complete readout frequency of at least 100 kHz. By means of the detector elements arranged behind the respective microlens, a wavefront datum regarding the sample light is determined. Moreover, a sample point signal is computed from signals of the detector elements. Illuminating light is successively deflected onto different sample points with the scanner and corresponding sample point signals are captured, wherein, for at least some of the different sample points, a corresponding wavefront datum is also determined. The determined wavefront data can be taken into account in a calculation of a sample image from the plurality of sample point signals.

Abstract: A confocal microscope includes a housing, which may be printed, and which includes mounts for receiving optical and other components of the microscope. The positions of the mounts are pre-determined so as to obviate the need for complex calibration of the components. The components and optical path lengths are selected in order to optimise the size of the microscope.

Abstract: Atomic layer deposition methods for coating an optical substrate with magnesium fluoride. The methods include two primary processes. The first process includes the formation of a magnesium oxide layer over a surface of a substrate. The second process includes converting the magnesium oxide layer to a magnesium fluoride layer. These two primary processes may be repeated a plurality of times to create multiple magnesium fluoride layers that make up a magnesium fluoride film. The magnesium fluoride film may serve as an antireflective coating layer for an optical substrate, such as an optical lens.

Abstract: The described method and system allow the simultaneous detection of multicolored samples, e.g. in live cells or tissues, in a simple experimental geometry. It relies on combining ultrashort ultra-broadband laser sources (10) with a fluorescence microscope setup able to collect fluorescence intensities and/or photon arrival times per excitation volume, as well as nonlinear signals, such as second/third-harmonic and sum-frequency generation. In the description, the presented method is referred to as “SyncRGB method”.

Abstract: Wavelength-selective films are visibly apparent under the selective wavelength. Wavelength-selective films typically reflect off axis the selected wavelength and therefore can provide high-contrast against a background when applied in a pattern on a substrate. However, it is difficult to apply unique patterned embedded images from film. Disclosed is a cost-effective method and construction of a patterned wavelength-selective image to a substrate. In the disclosed wavelength-selective image, wavelength-selective film particles are applied to an adhesive pattern to create the wavelength-selective image.

Abstract: An embodiment includes: a housing including an upper surface, a lower surface, an inner surface, and an outer surface located at the side opposite to the inner surface; a bobbin accommodated in the housing; a first coil disposed at an outer surface of the bobbin; a first magnet disposed at the outer surface of the housing; a second magnet disposed in the housing so as to be spaced apart from the first magnet; and a first position sensor disposed at the outer surface of the bobbin, wherein a first part of the housing is positioned between the second magnet and the inner surface of the housing.

Abstract: An antiglare transparent substrate includes a transparent substrate which includes a chemically strengthened glass and has a first main surface and a second main surface. The first main surface includes: a first smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less; and a first rough region having an arithmetic average roughness Ra larger than the arithmetic average roughness Ra of the first smooth region. The second main surface includes, in at least a part of a region facing the first smooth region, a second smooth region having an arithmetic average roughness Ra of 0.05 nm or more and 2 nm or less.

Abstract: A method of evaluating quality of graphene using a confocal laser scanning microscope, the method comprising steps of: irradiating with laser light a graphene layer formed on a catalyst layer; detecting a signal of light reflected from the graphene layer; forming a planar image of the graphene layer using the detected optical signal; and analyzing a contrast between graphene and the catalyst layer in the planar image, wherein the graphene layer is continuously formed on the catalyst layer by a roll-to-roll process.