A method of determining a condition of an interior of a can may include illuminating an interior of one can of a plurality of cans on a production line using at least one light source. The method may include imaging the interior of the one can while the interior is illuminated by the at least one light source. The method may include determining whether a state of the interior of the one can matches a predetermined state based on an image of the interior of the can.

Described herein are various technologies pertaining to an automated light field illumination container inspection. The container inspection system includes a plurality of cameras that capture images of a container when the container is illuminated by way of light field illumination. Bands in images that include reflections in the exterior surface of the sidewall are identified, and a determination is made as to whether the container is defective based upon the identified bands.

A side surface inspection device is provided for a cylindrical battery having a side surface defining a first region and a second region as a remainder of the side surface. The device includes a first light to emit light to the side surface of the cylindrical battery; a first mirror and a second mirror on respective sides of the cylindrical battery to each reflect light from respective portions of the first region of the cylindrical battery; and a camera to capture a first image from the light reflected by the first mirror, and to capture a second image from the light reflected by the second mirror. The first region of the cylindrical battery is more than half of the side surface of the cylindrical battery. The first and second images corresponds to a full region of the first region of the cylindrical battery.

An inspection system is described. The inspection system includes a camera and a housing. The housing contains a reflective dome. The reflective dome includes an apex and a viewport. The viewport is offset from the apex. The camera is mounted to capture light exiting the reflective dome through the viewport. And, a plurality of light sources are arranged about the reflective dome such that light output from the plurality of light sources enters the dome.

A linearly-overlapping light measurement system measurement head having one or more linearly-overlapping modular light sources each having individual light sources arranged in a geometric pattern, the light sources being single- or multi-wavelength and programmable to generate light that is transmitted through and/or reflected from a work piece to be detected by linearly-overlapping modular light detectors having individual light detectors arranged in a geometric pattern. The measurement head also has linearly-overlapping modular light detectors arranged in a geometric pattern to receive light emitted by the light sources. A computer controller coordinating the operation of the light source array and light detector array to automatically sense and record the light transmittance and/or reflectance of one or more spectral ranges in real time from the work piece and then adjust the work being performed on the work piece to attain pre-determined standards. Reference feedback circuitry is provided for monitoring the light sources in each light source module. The reference feedback circuitry adjusts the operating parameters of a light source module to ensure that the intensity and the chromatic output of the light therefrom remains at a consistent level.

Disclosed are methods and apparatus for imaging a rounded edge of a sample, such as a wafer with a beveled edge. In one embodiment, the system includes a curved diffuser having an internal surface for positioning towards the rounded edge of the sample and an external surface opposite the internal surface and light sources for generating a plurality of illumination beams adjacent to a plurality of positions on the external surface of the diffuser so that the diffuser outputs uniform light onto the rounded edge of the sample at a wide range of incident angles. The system further includes a sensor for receiving light scattered from the rounded edge of the sample in response to the incident light and generating a detected signal for generating an image. These elements are partially or entirely integrated into a compact assembly.

Provided herein is an apparatus including a photon emitter array. The photon emitter array includes a number of photon emitters selectively oriented in a number of polarized orientations. The photon emitters are configured to controllably emit photons onto a surface of an article. The apparatus also includes a photon detector positioned to receive photons scattered from features on the surface of the article. The photon detector simultaneously receives photons oriented in the number of polarized orientations. In addition, the photon detector provides information for mapping the features on the surface of the article.

A light-emitting table suitable for use in metrology includes a plurality of light sources and a field to be illuminated. Light-emitting centers of the light sources represent starting points of light source axes which perpendicularly intersect the field to be illuminated. The light-emitting centers of the light sources on one side and the field to be illuminated on the other side delimit an intermediate space in the interior of the light-emitting table. Located between the light source axes within the intermediate space are curved and mirrored surfaces, the focal points or caustics (K) of which are located within the intermediate space between the curved and mirrored surfaces and the field to be illuminated. A coordinate measuring machine for capturing the coordinates of a workpiece includes at least one optical sensor and a light-emitting table for illuminating the workpiece during measurement of the coordinates of the workpiece using the sensor.

Methods and systems detect markings or flaws on the backs of playing cards. The method includes: providing ambient radiation at a gaming table and reflecting some of that radiation off a back surface of a playing card; capturing reflected radiation with a radiation sensor; the radiation sensor transmitting signals based on the reflected radiation captured by the radiation sensor; the transmitted signals providing data that contains image data of the back of the playing card; and displaying an image of the back of the playing card based on the image data. The transmitted signals provide image data of the back of the playing card and are also received by a processor that evaluates or compares that data. The system may be an installed casino system (with eye-in-the-sky technology), a portable box, or a component within a shuffling device or dealer shoe.

An apparatus for acquiring three-dimensional information of objects and surfaces comprising a first camera having a vertical optical axis, a first flat sensor having orthogonal axes lying in a horizontal plane, a second camera having a horizontal optical axis, a second flat sensor having orthogonal axes lying in a vertical plane, a plurality of light projectors angularly spaced around the vertical optical axis of the first camera, a first vertical optical arm associated with the first camera and coaxial with the vertical optical axis, a second horizontal optical arm associated with the second camera and coaxial with the horizontal optical axis, an optical beam splitter splitting the light beam reflected by the object into first and second light beams directed along the first and second optical arms, wherein the first and second flat sensors have the same shape and arranged to acquire the object with the same field of view.