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7 terms
Photonics Dictionary: O
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oblique spherical aberration
coma, fifth order aberration with on-axis focal point variation with incident off axis ray height position
obsidian
An acid-resistant, lustrous volcanic glass, usually black or banded.
optical center
The point on the optical axis of a lens that is the image of the nodal points. For any bundle of rays passing through the optical center of a lens, the incident and emergent rays through this point...
optical grating reflectance evaluator
A device for measuring diffraction grating efficiency at any angle of incidence, consisting of a reflectometer wherein the detector rotates around the grating at a specific distance and is attached...
optical grating
An optical grating, in the context of optics and physics, refers to a device with a periodic structure of closely spaced, parallel slits or rulings. These slits or rulings act as obstacles to the...
optical work
The degree to which the surface of a lens causes an incident ray of light to bend, or the amount of convergence or divergence that the surface contributes to a wavefront passing through it.
optics of material
The area of optics that deals with the interaction of light with a given material. The optical properties of material are generally described by the absorption, transmission, reflection, and...
Photonics Dictionary
O
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