A vehicle part inspection device is configured to inspect an inspection object secured on a jig frame by a securing unit, and may include: i) a sensing unit which is pivotably installed on a mount frame, moves in multi-axis directions along the jig frame, and senses an inspection portion of the inspection object; and ii) angle changing units which are installed to be radially connected with the sensing unit, and change a sensing angle of the sensing unit by applying forward and rearward operating force to the sensing unit.

The invention includes an improvement in a method of assessing a gemstone having at least one planar face with an internally reflecting surface including the steps of optically modifying the at least one planar face of the gemstone to return a sample beam from an internally reflecting plane corresponding to the at least one planar face to an optical coherence tomography (OCT) system; selectively directing the sample beam from an optical coherence tomography (OCT) system onto the gemstone; and generating an OCT image map of the gemstone to determine volume, gem carat weight and/or quality.

Methods and apparatus are presented for determining data indicative of a photoluminescence (PL) response to solar irradiation from at least one photovoltaic module in a first string of series-connected modules that is one of a plurality of parallel-connected strings connected to an operating inverter. Two or more signals from a module in the first string are measured while modulating its operating point by modulating the illumination intensity incident on selected portions of one or more modules in that string. Measured signals are processed to determine data indicative of a PL response from the module, discriminating the response from the much brighter reflected sunlight. Importantly, this approach has an extended effect whereby modulating the illumination incident on a subset of modules in a string affects the operating point (PL intensity) of all modules in the string, offering increased throughput, reduced cost and improved versatility for outdoor PL imaging of photovoltaic arrays.

A method comprises: directing a laser beam onto a side of a tube, wherein the side includes a defect; moving the tube with respect to the laser beam such that the laser beam beams onto the defect; sensing a reflection of the laser beam from the side based on the defect; computationally identifying a change between the laser beam and the reflection; computationally acting based on the change. The side can be internal or external. In other implementations, the laser beam is moved with respect to the tube such that the laser beam beams onto the defect.

A vibration measurement device includes: a vibration-inducing section; a laser source; a scanning section for illuminating a partial area of a measurement area on an object with laser light and moving the illumination area; an illumination control section for sequentially illuminating each point within the measurement area with an illuminating duration equal to or shorter than one third of the vibration period; a displacement measurement section for measuring, for each point within the measurement area, an interfering light obtained by splitting an object light from the object into two bundles of light to measure a relative displacement in a back-and-forth direction between two closely-located points within the measurement area; and a vibration state determination section for determining the state of vibration of the entire measurement area, based on the relative displacement in the back-and-forth direction between two closely-located points at each point within the measurement area.

Provided are detection system and method, computer device, and computer readable storage medium; the detection system includes laser, camera unit, and computer device; the camera unit is mounted in upper region of measured object; the laser is mounted directly above the measured object, and transmitting port of the laser is facing the measured object; the laser is configured for projecting a laser plane, the laser plane intersecting surface of the measured object to form laser line, and the laser line dividing the surface into multiple different regions of interest; the camera unit is configured for collecting images of the measured object from different shooting angles, each image including part or all of each region of interest; and the computer device is configured for cutting and splicing all of the images based on the region of interest contained in each image to obtain target image of the surface.

A car body inspection device includes a main inspection device includes an illuminator to illuminate a surface of a car body; a light receiver to receive specular reflection light from a first inspection area of the surface illuminated by the illuminator; and circuitry configured to inspect the first inspection area based on the specular reflection light received by the light receiver. The main inspection device is coupled to an auxiliary inspection device to inspect a second inspection area other than the first inspection area on the surface, and the light receiver of the main inspection device does not receive the specular reflection light in the second inspection area.

This illumination optical system has a laser light source (301, 401, 501), a light collection optical system (311, 4il, 51i), and a support structure (312, 412) that is able to secure the laser light source and the light collection optical system, wherein the light from the laser light source is focused onto an object to be inspected (307, 407, 507). The light collection optical system includes a cylindrical mirror (306, 406, 506), and at least one cylindrical lens (304, 404a, 404b, 4G4c, 504a, 5046, 504c). The cylindrical mirror is an optical element that collects light in a first direction, and the cylindrical lens is an optical element that collects light in a second direction perpendicular to the first direction. The focal distance of the cylindrical lens to the object to be inspected is greater than the focal distance of the cylindrical mirror to the object to be inspected.

A method comprises: directing a laser beam onto a side of a tube, wherein the side includes a defect; moving the tube with respect to the laser beam such that the laser beam beams onto the defect; sensing a reflection of the laser beam from the side based on the defect; computationally identifying a change between the laser beam and the reflection; computationally acting based on the change. The side can be internal or external. In other implementations, the laser beam is moved with respect to the tube such that the laser beam beams onto the defect.

A defect inspection system is provided for inspection of defects in the surface of a sample. An array of light sources is used, with different light sources providing light to the sample from different directions. A main direction of illumination is defined with highest intensity, and this direction evolves over time. By providing varying directional illumination instead of blanket illumination, it becomes easier to detect defects.