QPC Lasers Inc. - QPC Lasers is LIDAR 4-24 LB

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Teledyne DALSA - Line Scan Leader 5/24 MR

200 terms

Photonics Dictionary: C

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cu

cubic

cube-corner prism -> corner cube

A corner cube, also known as a corner reflector or retroreflector prism, is a type of optical device used to reflect light or electromagnetic waves back towards their source with minimal deviation in...

CubeSat

A CubeSat is a type of miniaturized satellite characterized by its standardized size and modular design. CubeSats are typically used for scientific research, technology demonstration, educational...

cubic convolution

A method of resampling in which a 16-pixel neighborhood around a given pixel from the original image is used to calculate the final brightness value of that pixel in the corrected image.

cup bevel

A bevel produced by grinding with a cup-shaped tool.

Curie temperature

The temperature above which a ferromagnetic material becomes only paramagnetic.

curie

Standard maintained by the International Commission on Radiological Units as a unit of radioactivity defined as the quantity of any radioactive nuclide in which the number of disintegrations per...

curing

The use of chemicals or radiation to induce a desired change in a substance; e.g., some optical adhesives are set by exposure to ultraviolet light and are said to be UV-curing.

current saturation

A condition during laser operation when laser output can no longer be increased by additional electric current.

current transient

A sudden, brief increase in current or voltage in a circuit that can damage sensitive components and instruments. Preventive measures include slow-starter circuits, filtering and static control.

cursor

On a display monitor, a small, mobile rectangle, cross-hair or pointer that locates a feature in an image that is the object of attention, or indicates where the next character will appear in word...

curvature

The measure of departure from a flat surface, as applied to lenses; the reciprocal of radius. Applies to any surface, including lenses, mirrors and image surfaces.

curvature loss -> macrobend loss

In an optical waveguide, that loss attributable to macrobending. Macrobending usually causes little or no radiative loss.

curvature of field

A lens aberration that causes a flat object surface to be imaged onto a curved surface rather than a plane.

curvilinear distortion

A lens aberration in which the focal length varies radially outward from the center of the field. It has the effect of making a straight tangential line in the object appear curved in the image,...

custom lapping and polishing services

Custom lapping and polishing services involve specialized processes used to improve the surface finish and dimensional accuracy of components to meet specific requirements or standards. These...

custom optic

A custom optic refers to an optical component that is designed, manufactured, and tailored to meet specific requirements or applications. These optics can include lenses, mirrors, prisms, filters, or...

cut plane

In computer graphics, intersection of a plane with a three-dimensional object to create a sectional view.

cutback technique

A technique for measuring fiber attenuation or distortion by performing two transmission measurements. One is at the output end of the full length of the fiber. The other is within 1 to 3 m of the...

cutoff wavelength

1. In detector technology, the long wavelength at which detector response falls to a set percentage (usually 20 or 50 percent). 2. In fiber optics, the shortest wavelength at which a fiber transmits...

cuton wavelength

In filter terminology, that wavelength where the filter transmission increases beyond 5 percent.

cutting

The process of forming a lens to a given pattern, or of cutting a piece of glass along the line of scratch.

cutting center

The point on a cutting line that will become the geometrical center of the cut lens.

camera obscura

A forerunner of the modern camera, this instrument had a focusable lens that produced a sharp image on the enclosure opposite the aperture but had no photosensitive material to record it.

center of curvature

The center of the sphere of which the surface of a lens or mirror forms a portion. Each curved surface of a lens has a center of curvature; the surfaces may be convex or concave.

centered curve

The surface curvature designed to reduce the marginal error found in the periphery of a spectacle lens.

characteristic curve

A graph used in photography to portray the increase of a film's density as its time of exposure increases.

circular birefringence

The optical phenomenon in which right circularly polarized light transmitted by an active medium travels at a different velocity than that of left circularly polarized light.

circular dichroism spectroscopy

A type of spectroscopy used extensively in the analysis of biological samples. Because most biologically synthesized molecules, such as proteins, are optically active, circular dichroism spectroscopy...

circular dichroism

Circular dichroism (CD) is a spectroscopic technique used to study the structural characteristics of chiral (asymmetric) molecules, particularly biomolecules like proteins, nucleic acids, and certain...

circular scanning

Scanning characterized by the generation of a plane or right circular cone with a vertex angle of about 180° by the direction of maximum radiation.

circular variable filter

An optical interference coating, vacuum-deposited on a circular substrate, whose transmission characteristics may be varied by physical rotation.

circularly polarized light

A light beam whose electric vectors can be broken into two perpendicular elements that have equal amplitudes and that differ in phase by l/4 wavelength.

circulator

A passive device, having three or more ports, in which input light from one port is coupled only to the next sequential port in a given direction and is prevented from traveling in any other...

circum

circumference

circumzenithal arc

The halo phenomenon of a brightly colored arc having the colors of the rainbow and lying parallel to the horizon.

closed-circuit television system

A television system that does not broadcast television signals but transmits them over a closed circuit.

coincidence circuit

Electronic circuit capable of distinguishing the pulses emitted by separate counters in a given time phase and determining whether the pulses were emitted by the same particle or correspond to a...

computer-calculated diffraction pattern

The use of computer analysis in the calculation of diffraction patterns for information on the design of optical systems. In this method, the electric field amplitude and phase in the aperture are...

conjugate autofocus system

A system that determines whether an image is in or out of focus by means of a source of illumination at the conjugate focal point, which reflects off the target; the return beam is mediated by masks...

conjugate focus -> conjugate points

The two points on the principal axis of a mirror or lens so positioned that light emitted from either point will be focused at the other, i.e., object and image points.

converging meniscus

A converging lens with one convex and one concave surface.

corner cube

corner-cube prism -> corner cube

corner-cube reflector -> corner cube

Crayford focuser

A high-quality focuser that uses rollers rather than gears and offers smooth, precise motion while reducing or eliminating image shift and backlash.

cathodic etching -> vacuum etching

Also known as cathodic etching. Surface etching achieved by bombarding an evacuated surface with gas ions.

convexo-concave lens -> meniscus lens

A lens that has one convex surface and the other concave.

centi-; speed of light in a vacuum

C-mount

A standard lens interface initially made for 16mm movie cameras and now used primarily on closed-circuit television cameras. It is a 1-in.-diameter, 32-thread-per-inch interface with a...

Photonics DictionaryC