Abstract:
A gas sensor includes a light source 17 configured to emit light for gas component estimation and a light detector 18 configured to receive light transmitted while being reflected in a cell. The cell includes a parallel flat-plate-shaped cell body 11 and a parallel-flat-plate-shaped lid member 12 mounted on the cell body 11, the cell body 11 includes a flat ellipsoidal-column shaped cell space 13 having a constant depth, the lid member 12 or the cell body 11 is formed with openings 16A, 16B configured to encourage gas to be measured to flow in and flow out, the light source 17 is provided on one focal line L1 of the cell space 13, the light detector 18 is provided on the other focal line L2 of the cell space 13, and an entire surface surrounding the cell space 13 is formed into a light reflecting surface. Accordingly, even when the length of optical path is increased, the cell is prevented from becoming three-dimensionally bulky, the amount of gas required for filling up the cell may be small, and a compact gas sensor having high sensitivity is provided.
Abstract:
PURPOSE:To save the electric power capacity of a light source and to make the flaw detection easy by providing a trough-shaped reflection mirror of elliptic surface having a cooling air hole and a cooling water hole, halogen lamp and a pipe covering the reflection mirror. CONSTITUTION:The lighting apparatus for surface flaw detection has the reflection mirror 21 having elliptic surface, the halogen lamp 22 and the pipe 23 covering the mirror 21. The mirror 21 has the holes 21A, 21B for flowing cooling water in the inner part and the hole 21C for flowing cooling air. By such a constitution, the electric power capacity of the light source is saved, the contrast of the negative image can be obtained against both flaws to parallel and vertical directions to the moving direction of the slab, and the detection is made easy.
Abstract:
A mode-locked laser system operable at low temperature can include an annealed, frequency-conversion crystal and a housing to maintain an annealed condition of the crystal during standard operation at the low temperature. In one embodiment, the crystal can have an increased length. First beam shaping optics can be configured to focus a beam from a light source to an elliptical cross section at a beam waist located in or proximate to the crystal. A harmonic separation block can divide an output from the crystal into beams of different frequencies separated in space. In one embodiment, the mode-locked laser system can further include second beam shaping optics configured to convert an elliptical cross section of the desired frequency beam into a beam with a desired aspect ratio, such as a circular cross section.
Abstract:
A device including an optical measuring device and an optical system which can measure the light intensity of the scattered light from the sample and the spatial distribution of the scattered light and which is excellent in the sensitivity is provided. In the device, the image distortion is suppressed by providing such a structure that the light emitted from the first substance is reflected by the ellipsoidal mirror two or more even times before reaching the second substance. The image distortion is suppressed by arranging two ellipsoidal mirrors so that respective one focuses are set to a common focus while remaining other two focuses are arranged on one line so as to be opposite to each other across the common focus, setting the common focus to a blank, arranging a first substance on one of the focuses, and arranging a second substance on the other of the focuses.
Abstract:
A system for measuring thermal degradation of composites, may include a housing having an interior with an opening shaped to expose a test area of the composite to be tested to the interior; a light-emitting diode that emits primarily ultraviolet radiation, the diode mounted on the housing to direct the ultraviolet radiation into the interior and through the opening; an image sensor mounted on the housing and open to the interior to receive radiation emitted from the test area passing through the opening into the interior; and an image processor connected to receive a signal from the image sensor, the image processor determining a presence or absence of thermal degradation of the test area in response to the signal.
Abstract:
In an apparatus for measuring an optical characteristic of a sample, one object of the present invention is to provide an apparatus capable of measuring hemispherical total reflectance, hemispherical total transmittance, and light distribution, and to achieve a reduction in measurement time and an improvement in precision of the quantitative analysis of hemispherical total reflectance (transmittance). In a double ellipsoidal optical system which is an optical system in which one focal points of two ellipsoidal mirrors are positioned as a common focal point, and three focal points are aligned in a straight line, the double ellipsoidal optical system is composed of a partial ellipsoidal mirror 2, such as a quarter ellipsoidal mirror, and a belt-shape ellipsoidal mirror 1. By disposing, on a position of a focal point of the partial ellipsoidal mirror, a hemispherical detection optical system having a hemispherical lens or a rotational parabolic mirror, light scattered by an object, reflected by the partial ellipsoidal mirror, and focused on the point is photographed by for example a CCD camera 6 via a hemispherical lens and a taper fiber 5 so as to measure an optical characteristic of the object.
Abstract:
A portable biochip scanner that enables multi-channel measurement includes a surface plasmon resonance unit (44) formed in a rotational disk-shape and an optical head (50) projecting light to the surface plasmon resonance unit (44) at an angle within a predetermined range and detecting light totally-reflected from the surface plasmon resonance unit (44). The optical head (50) is movable in a radial direction of the surface plasmon resonance unit (44). Preferably, the surface plasmon resonance unit (44) comprises a prism disk (42) formed in a ring-shape, and a micro-fluidic disk (43) coupled to a bottom of the prism disk (42). The micro-fluidic disk (42) being provided at a top surface with a plurality of micro-fluidic channels. Preferably, the optical head includes a micro-scanning mirror (52) projecting light from a light source (51) via a reflecting mirror (53) to the surface plasmon resonance unit (44).