Abstract:
A projector and a reflection plate with stripe shaped patterns printed on it are used for projecting the reflection light of the stripe shaped pattern onto a tape. An inspection apparatus for inspecting the crease condition of the tape by analyzing the pitch of the stripe shaped pattern projected onto the tape on a plurality of inspection lines is provided so that the change condition of delicate creases may be detected in a short time.
Abstract:
Optical readers are disclosed in examples herein. An example optical reader including a light source to emit a light beam; and a spot pattern generator to receive the light beam and to generate a two-dimensional spot array from the light beam, the two-dimensional spot array to be directed toward a substrate having nanostructures, the two-dimensional spot array to be sensed to detect a presence or an absence of a substance of interest on the substrate.
Abstract:
A system for measuring optical distortion in a contoured glass sheet includes a conveyor for conveying the glass sheet in a first direction, at least one display projecting a preselected multi-phase non-repeating contrasting pattern, and at least one camera, each one of the cameras uniquely paired with one of the displays. The system may also include a control programmed to execute logic for controlling each of the cameras to acquire the desired images, and logic for analyzing and combining the data acquired by the cameras to construct a definition of the surface of the glass sheet, and logic for performing one or more optical processing operations on the surface data to analyze the optical characteristics of the glass sheet.
Abstract:
An apparatus (1) for the optical detection of inner walls (7) is proposed, comprising – at least one camera (K), – an optical imaging arrangement (3), and – an illumination arrangement (5), wherein – the apparatus (1) is configured to record in a panoramic view by means of the camera (K) a plurality of regions of an inner wall (7) which are axially offset from one another. The apparatus (1) is distinguished by virtue of the illumination arrangement (5) having at least two different functional states, wherein a first brightness distribution emitted by the illumination arrangement (5) is assigned to a first functional state, said brightness distribution differing from a second brightness distribution in at least one second functional state.
Abstract:
An optical instrument (A) for monitoring polymerase chain reaction replication of DNA may include a thermal cycler block (1c) for holding a plurality of vials (1b), each containing a suspension of ingredients that include a fluorescent primary dye. The instrument may include a light source (11) for emitting a source beam, a first means (7) disposed to be receptive of the source beam, a primary focusing means (3) disposed to focus the excitation beam simultaneously into a plurality of suspensions and being receptive of and passing emission beams, a second means (8) disposed to be receptive of emission beams, an emission focusing means (10) for focusing emission beams, a detector, and a processing means for computing concentration of DNA. The optical system being arranged without a beam splitter (6) but with one or more folding mirrors (5), and with excitation and emission beams being on slightly different optical paths angularly.
Abstract:
The disclosure relates to processing SPR signals, in particular signals obtained by illuminating a conductive surface with light at two wavelengths. Embodiments involve processing a first and second signal indicative of an intensity of light, received from a conductive layer at which SPR has occurred, as a function of angle of incidence, reflection or diffraction at the layer (depending on whether the incident light beam is received by a detector recording it in reflection or transmission from the conductive layer). The first and second signals each have two dips corresponding to a respective wavelength of the light at a respective angle at which surface plasmon resonance occurs for the respective wavelength and a peak between the two dips. The processing includes deriving a first and second value of a quantity indicative of signal magnitudes in the region of the peak. The method then provides for comparing the first and second values to detect a change in refractive index at the layer after the first signal and before the second signal was captured.
Abstract:
A planar sample, particularly of the type used in biological laboratories for detection and sometimes analysis of two-dimensional arrays of proteins, nucleic acids, or other biological species, is illuminated by epi-illumination using optically filtered line lights that are arranged along opposing parallel sides of a rectangle in which the sample array resides, with two coaxial line lights on each side of the rectangle, and the two on any given side being separated by a gap whose optimal width depends on the wavelength band transmitted by the optical filter. Surprisingly, the gap eliminates the peak in intensity at the center of the sample area and the decrease that occurs from the center outward that would otherwise occur with a single continuous filtered line light, producing instead a substantially uniform intensity along the direction parallel to the line lights.
Abstract:
A filter module (30) suitable for an optical instrument (A) for monitoring polymerase chain reaction replication of DNA in a reaction apparatus (B) that includes a thermal cycler block for holding a plurality of vials containing a suspension of ingredients for the reaction, the optical instrument including a housing suitable for receiving the filter module, the filter module comprising: a beam splitter (6) an excitation filter (7); an emission filter (8); and a support frame (34, 36, 40, 44); wherein: the beam splitter (6), the excitation filter (7) and the emission filter (8) are affixed to the support frame; the filter module (30) is suitable for being received in the housing of the optical instrument; the beam splitter (6), the excitation filter (7) and the emission filter (8), and thereby the filter module (30), are associated with a selected dye for the suspension; and the filter module (3) is removable from the housing of the optical instrument for replacement with another filter module associated with another selected dye.
Abstract:
A dual illumination system is disclosed for use with an imaging apparatus. The imaging apparatus defines a light-tight imaging compartment with an interior wall having a view port extending into the imaging compartment. This view port enables data acquisition of a biological specimen contained in the imaging compartment. The dual illumination system includes a first illumination assembly configured to direct structured light onto a first side of the specimen to enable structured light and surface topography measurements thereof. A second illumination assembly then directs light at the specimen wherein diffused fluorescent light emanates from a surface thereof for receipt through the view port to acquire fluorescence data of the specimen. The combination of structured light imaging and fluorescence imaging enables 3D diffuse tomographic reconstructions of fluorescent probe location and concentration.
Abstract:
A device for optically sensing a specimen with a large depth of field comprises a lighting module (1) which illuminates a zone of the specimen during a predetermined measurement period with a pattern whose phase is modified in time during the measurement period, generating a specimen light to which a corresponding time-variable phase is imparted, a detection module (4) having a space-resolving detection zone (8) which records the specimen zone and has multiple recording pixels (12), two analysis channels (13, 14) which can be connected to the recording pixels (12), and an analysis unit (25) connected to both analysis channels (13, 14), as well as a control unit which, during the measurement period, connects each recording pixel in synchrony with the phase of the detected specimen light to the two analysis channels (13, 14), alternatively, in such a way that the detected specimen light is divided into two portions phased in relation to one another, and the analysis unit calculates an optical split-image of the specimen zone on the basis of the two phased portions supplied to the analysis channels.