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NEMA Dictionary Terms

kinematics
That portion of physics concerned with motion in the abstract, such as of points or space figures, and separated from its dynamic properties.
light field
The term light field refers to the spatial distribution of light rays traveling in all directions through a given space. It...
director
In a liquid crystal system, the director refers to the local symmetry axis around which the long range order of the liquid...
image jump
In optics, the term image jump refers to a displacement or shift in the apparent position of an image when a change occurs...
supertwisted nematic phase
A form of liquid crystal in which the 90° twist of the twisted nematic phase has been increased to 180° or more,...
frame rate
Frame rate refers to the frequency at which consecutive images, or frames, are displayed in a video sequence. It is...
Digital Imaging and Communications in Medicine
Digital Imaging and Communications in Medicine (DICOM) is an international standard for medical imaging created by both the...
kinematic mount
A mount for an optic element or optics assembly, designed so that all six degrees of freedom are singly constrained. This...
holographic cinematography
A technique used to create a series of interrelated holographic images that give an appearance of motion when projected in...
nematic phase
A form of liquid crystal with an appearance of moving, threadlike structures, particularly visible when observed in thick...
cinemicrography
Cinematography performed with the use of a microscope to film the actions of microscopic specimens.
liquid crystal
Liquid crystals are a state of matter that exhibits properties intermediate between those of conventional liquids and solid...
cinematography
The technique of making motion pictures.
supertwisted birefringent effect display
A liquid crystal display using the material in its supertwisted nematic phase; the birefringence of the liquid crystal...
cylindrical lens
A cylindrical lens is an optical component that has different curvatures along its two orthogonal axes, resulting in a shape...
homogeneous orientation
The parallel orientation of the molecular axes of the nematic molecules in a nematic crystal, relative to the electrode...
mount
See gimbal mount; kinematic mount; lens mount.
retarder cell
A device that uses nematic liquid crystals sandwiched between fused silica substrates to change the phase of polarized...
ophthalmic photography
The methods and techniques used to obtain medical photographs of the human eye. To photograph the exterior of the eye,...
homeotropic orientation
The perpendicular orientation of the molecular axes of the nematic molecules in a nematic crystal, relative to the electrode...
twisted nematic phase
A form of liquid crystal widely used in displays, achieved by sandwiching a liquid crystal material between two substrates...

(21 results found)

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