Abstract:
A tomographic scanning apparatus for scanning an object under test and retrieving projection-related data of the object with a light/radiation source and a detector operating in conjunction therewith includes an object carrier, a light/radiation source carrier, a detector carrier, a control module, a processing module, and a rail system (or rotating arm). The object carrier is disposed at a center of the rail system or a center of rotating tracks of the rotating arm. The light/radiation source carrier and the detector carrier move along a rail of the rail system or along the rotating tracks of the rotating arm. The carriers have a rotating mechanism, moving mechanism, and/or height adjusting mechanism for performing rotation, horizontal movement, and/or height adjustment. Accordingly, the tomographic scanning apparatus operates in various ways to suit various applications, respectively.
Abstract:
An optical measurement apparatus includes: a hollow cylindrical member having one plane with a first opening and the other plane with a second opening; a rotation mechanism for rotating the cylindrical member about a first axis; a support unit for arranging a light source at a measurement position which is on the first axis and from which the emitted light enters the cylindrical member through the first opening; a first reflection unit arranged inside the cylindrical member for reflecting the light emitted from the light source and entering through the first opening; a second reflection unit for reflecting the light inside the cylindrical member and propagating the light through the second opening along the first axis to the outside of the cylindrical member; and at least one third reflection unit for causing the light reflected by the first reflection unit to be incident on the second reflection unit.
Abstract:
A system and method for performing field measurement and testing of a plurality of widely spaced laser beams used in visual warning technology (VWT). VWT uses a combination of widely spaced laser beams, to warn civilians from approaching too close to military security areas. The widely spaced laser beams are displaced using rhomboidal prisms. Each rhomboidal prism receives a corresponding laser beam and displaces it toward a collecting lens. The lens focuses the displaced beams received thereon onto an imaging sensor for testing. Beam shutters may be used for selectively blocking one or more beams in order to test the beams separately and in different combinations.
Abstract:
A detection apparatus for light-emitting diode chip comprising a light-collecting apparatus having an opening, a bracing component and a probing device is disclosed. The bracing component is designed to bear at least one light-emitting diode chip. The probing device comprises a power supply and at least two flexible current-transporting elements. The two ends of the current-transporting elements are respectively electrically connected to the light-emitting diode chip and the power supply to enable the light-emitting diode chip to emit light beams. Besides, the detection apparatus for light-emitting diode chip of the present invention further comprises a thimble to push the light-emitting diode chip into the inside of the light-collecting apparatus via the opening such that the light beams emitted by the light-emitting diode chip are collected by the light-collecting apparatus.
Abstract:
A LED light source measuring instrument includes a shell portion and a test portion. The shell portion supports the test portion. The test portion includes a carrier plate for placing a LED light source to be tested. A conductive structure is set on the carrier plate for electrically connecting with an underside surface of the LED light source; a cooling chip is set on the carrier plate; a vacuum suction device is provided for generating a vacuum force on the test portion for securely attaching the LED light source to the carrier plate. The cooling chip is used for controlling the temperature of the LED light source within a limited range. A fan is provided for generating a cooling airflow to the LED light source. A heat sink fin extends from the carrier plate toward the fan.
Abstract:
A photodetecting device 1 includes an integrating sphere 20 for observing light to be measured generated according to irradiation of a sample with excitation light and a sample holder 60 removably attached to the integrating sphere 20, the integrating sphere 20 has an excitation light introducing hole 201 for introducing the excitation light and a sample introducing hole 205 for introducing a cell C held by the sample holder 60, the sample holder 60 is locked to the sample introducing hole 205 and holds the cell C for accommodating the sample, and the cell is disposed so that an entrance surface of the cell C, through which the excitation light enters the cell C, inclines relative to the surface perpendicular to the optical axis L of the excitation light.
Abstract:
A method for testing light-emitting devices in a batch-wise, associated with a system for the same purpose, comprises the steps of: preparing the light-emitting devices on a moving carrier unit in a manner of aligning a predetermined longitudinal direction of the light-emitting devices with a predetermined transportation direction of the moving carrier unit, each of the light-emitting devices further having plural light-emitting elements; transporting orderly the light-emitting devices to pass a test area on a base of the system, in which the base energizes only the light-emitting elements within the test area; and, a solar cell module detecting continuously the energized light-emitting elements within the test area and further forming signals with respect to photo energy received in the test area.
Abstract:
A method for imaging a sample by means of a device having a cavity with black inner walls and a sample opening, the device further comprising illumination means for illumination of the cavity and a digital imaging device directed from the cavity to the sample opening, the method comprising the following steps: presenting a sample to the cavity via a sample opening; illuminating the cavity; activating the imaging device to record an image of the sample; communicating the recorded image data to a computer programmed with image analysis software to analyze the recorded image, characterized in that the inner wall of the cavity is light absorbing and in that it is at least partly provided with light point sources distributed over at least a part of the inner wall of the cavity and a selection of the light sources, dependent on the desired light conditions, is activated.
Abstract:
An improved power meter for measuring the energy and wavelength of light emanating from an optical fiber. The meter is an integrating sphere having a source aperture for receiving the tip of an optical fiber and coupling the light from the tip into the sphere's central cavity. The source aperture is modified to include a sterilizable, liquid-fillable insert which mimics the optical environment within tissue. The sphere also has improved baffling and the sensitivity of wavelength verification is improved by means of a rotatable interference filter placed between an exit aperture and a light detector.
Abstract:
A test fixture used to calibrate an electronic device is disclosed. The test fixture includes several modules positioned on a rack. The modules may include either a stimulus member or light-absorbing material. An actuator connected to an end unit is configured to engage any one of the several modules and transport the module from the rack to a location over the electronic device. At least one module can calibrate a touch sensor of the electronic device, while at least another module can calibrate a proximity sensor of the electronic device. In some cases, an additional module is configured to calibrate a touch sensor of a second electronic device, such as a previous generation of an electronic device or an electronic device having a different dimension. The electronic device can lie on a cradle that may be identified by a feature on the cradle, such as a magnet.