Meadowlark Optics - Wave Plates 6/24 LB 2024

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8,616 terms

Photonics Dictionary

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.

CVD

chemical vapor deposition; compact videodisc

CVF

continuously variable filter

CVL

copper vapor laser

CVROS

compact video-rate optical scanner

continuous wave; clockwise

CWDM

coarse wavelength division multiplexing

cyanocrylate cement

Adhering material used to glue optical components that transmit in the infrared. It is easily dissolved by acetone.

cyanometer

An instrument designed to measure the proportion of light emitted by a source in the blue region of the spectrum.

cyanometry

The analysis of light in the blue region of the visible spectrum.

cyberspace -> virtual reality

Virtual reality (VR) is a computer-generated simulation of a three-dimensional environment or experience that can be interacted with and explored by an individual using electronic devices, such as a...

cycloidal mass spectrometer

A small mass spectrometer, with a limited mass range, equipped with an analyzer to generate a cycloidal-path beam of the sample.

cyclotron resonance

The tendency of charge carriers to spiral about an axis in a direction identical to that of an applied magnetic field that has an angular frequency formed by the value of the applied field and the...

cyl

cylinder

cylinder axis

In a cylindrical lens, the meridian parallel to the generating lines of the cylindrical surface. In a toric lens, the cylinder axis is the axis of the equivalent cylindrical surface that has been...

cylindrical lens

A cylindrical lens is an optical component that has different curvatures along its two orthogonal axes, resulting in a shape resembling a cylinder. Unlike spherical lenses, which have the same...

cystoscope

An endoscope used for the visual examination of the bladder.

Czochralski technique

Czerny-Turner design

A form of monochromator optical system consisting of two spherical concave mirrors used in conjunction with a movable diffraction grating.

Czochralski technique

density; diopter

deci-

detectivity

A value used to designate the relative sensitivity of a detector. The higher the D* value, the better the detector.

D-star -> D*

A value used to designate the relative sensitivity of a detector. The higher the D* value, the better the detector.

D/A

digital-to-analog

deka-

DAA

data acquisition and analysis

DAC

digital-to-analog converter

Dall-Kirkham telescope

DAMA

diode array multichannel analyzer

Dammann grating

A Dammann grating is a type of diffractive optical element (DOE) used to create an array of equally spaced, uniform-intensity spots or beams. It is named after its inventor, Dr. Herbert Dammann. The...

damped least squares

An organizational method used in optical design computer programs. The technique produces one number (merit function) to measure the state of correction of an optical system. This number, which is...

damping

Continuous conversion of oscillatory energy into heat, relative to time or distance.

daNm

dekaNewton meter

DAP

deformation of aligned phase

dark adaptation

The ability of the human eye to adjust itself to low levels of illumination.

dark beam

A precision-engineered microminiature light source that is safe for darkroom use, yet emits a beam of light bright enough to read by.

dark box

A lightproof box used for storing photosensitive materials.

dark current

The current that flows in a photodetector when there is no optical radiation incident on the detector and operating voltages are applied.

dark decay

The decay of an electrostatic charge image resulting from long exposure to the dark.

dark discharge

In a gas, an electrical discharge that has no luminance.

dark fiber

Unused fiber; fiber that has been installed but reserved for future use. Carrying no light.

dark frame

A frame taken to identify electronic noise in a CCD imaging device. A dark frame is recorded without exposing the CCD to any external light by, for example, leaving the shutter of a CCD camera...

dark mirror

A multilayer coating that manifests both a low radiant reflectance and radiant absorption.

dark noise

The noise produced in a photodetector when the photocathode is shielded from all external optical radiation and operating voltages are applied.

dark operate mode

An operate mode in which the sensor is programmed to perform a task such as generating output when the light level falls below a certain threshold.

dark signal -> dark current

The current that flows in a photodetector when there is no optical radiation incident on the detector and operating voltages are applied.

dark space

The portion of a glow discharge tube that permits little or no light transmission.

Photonics Dictionary

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