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Alluxa - Optical Coatings LB 8/23
apertures Dictionary Terms

collector
A positive lens located at or close to an intermediate image plane. The collector refracts off-axis light bundles, directing them into the apertures of subsequent optics.
scalar diffraction theory
Scalar diffraction theory is a simplified approach used to describe the propagation of electromagnetic waves, particularly...
optical bench
A support for optical parts comprising a solid bed that permits precise longitudinal movement of one component relative to...
vignetting
In an optical system, the gradual reduction of image illuminance as the off-axis angle increases, resulting from limitations...
Schmidt camera
A camera that consists of a concave spherical mirror with an aspheric plate situated at the center of curvature of the...
optical caliper
A device for measuring linear dimensions. The optical caliper generally consists of two circularly mounted mirrors whose...
inefficient shutter
A shutter in which the opening and closing times for a large aperture setting occupy a substantial fraction of the total...
hololens
A series of permanent holograms in dichromated gelatin formed by opening total page-composer apertures and setting a point...
confocal scanning microscope
A microscope design that involves apertures inserted in conjugate plane positions inside the microscope, with one aperture...
double slit
A pair of long, slender parallel apertures used in experiments on diffraction and interference.
paraxial
Characteristic of optical analyses that are limited to infinitesimally small apertures. Also called first-order or Gaussian...
astronomical telescope
An astronomical telescope is a type of optical instrument designed to gather and magnify light from distant celestial...
point source lamp
A lamp, usually incandescent, that has a very compact filament, permitting a greater concentration of emitted light, aided...
cineradiography
The photographic filming of the action of x-ray images recorded on a fluorescent screen by means of large lens apertures and...
masks for evaporation/deposition
In the context of thin film deposition processes such as evaporation or sputtering, masks are used to selectively deposit...
angular spectrum approach
The angular spectrum approach is a mathematical and computational technique used in the field of optics to analyze and...
Shack-Hartmann wavefront sensor
The Shack-Hartmann wavefront sensor is an optical device used for measuring the wavefront aberrations of an optical system....
Sonnar lens
A photographic objective that uses the thick meniscus principle to obtain its power. It is designed to photograph small...
precision aperture
An accurately produced hole of any size and shape that is used as a masking device in an optical system. Pinhole apertures...

(19 results found)

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