An optical path length from the first output port to the asymmetric optical coupling unit is substantially equal to another optical path length from the second output port to the asymmetric optical coupling unit.
The interferometers have different optical path length differences (OPDs).
Auto focus (AF) is performed on the basis of the optical path length difference from signals obtained from the optical-path-length-difference imaging elements (21, 22).
The optical path length difference in each of the first sensing interferometers is approximately equal to the optical path length difference in the first matched interferometer.
This effectively changes that optical path length of the light, thus converting the wavelength.
An environmental condition corresponding to the absolute optical path-length difference can be measured using the measurement of the absolute optical path-length difference.
It is also possible, with the light path length correction element (15), to correct light path error which arises as the stepped shape is applied.
A controller (426) cooperates with the optical path length adjustor and the first optical detector (424).
This shortens the optical path length of the electron optical system so as to reduce the affect of the spatial charge effect and reduces generation of deflection aberration.
The optical path length of the cavity (26) is sized with the central reflection wavelength of the fiber gratings (20, 30) so as to create an optical resonator.
An optical path length adjustor (420) is coupled to the reference arm (430d,c).
An optical path length adjustor (420) is coupled to the reference arm (430d,e).
Said interference model, in conjunction with a known distance of the variation of the length of the optical path, enables the length of the eye (2) to be deduced.
A combination day/night sight includes an image intensifying sensor/display combination and a daytime optical path length compensator that may be selectively placed within the optical path.
Each frequency peak provides optical path length information about a corresponding pair of surfaces in the cavity.
The volume of the aliquot is calculated from the absorbance of the mixture and the optical pathlength of the container.
Light absorption by the analyte, together with the optical pathlength so determined, is used to calculate the concentration of the analyte.
For the correct determination of the optical path length, a minimum exhaust gas velocity of 20 m/s is required.
In this case, the layer material and/or the optical element (2) change(s) an optical property, in particular a refractive index or an optical path length, depending on a temperature change.
Two light sources (64, 67) are used within a spectrometer with each source being associated with a different optical path length.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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