نتایج جستجو برای: optical polariser
تعداد نتایج: 266587 فیلتر نتایج به سال:
Modulation techniques for measuring changes in optical birefringence, such as the rotating-polariser method (Wood & Glazer, 1980, J. Appl. Crystallogr. 13, 217), allow one to determine |sin delta|, delta = 2piLDeltan/lambda, Deltan = double refraction, L = light path and lambda = wavelength. However, they generally suffer from not providing absolute values of the optical retardance or are limit...
One recently reported approach to flat panel autostereoscopic 3D displays under investigation at Sharp Laboratories of Europe Ltd. (SLE) uses a high precision patterned optical half wave retarder combined with a re-configurable output polariser to “develop” a parallax barrier structure attached to an LCD display panel. Such a barrier is invisible without the polariser and thus a 2D/3D configura...
چکیده ندارد.
We propose a new analysis method of the Rayleigh backscattered field for the measurement of the birefringence spatial distribution in a single-mode optical fiber. The technique is based on a Polarization-OTDR set-up using a rotary linear polariser. We demonstrate that the birefringence distribution may be deduced from the measurement of the round-trip Mueller matrices derived from three POTDR t...
New three dimensional (3d) displays exploiting patterned retardation elements (i) external and (ii) internal to the LCD are discussed. The fabrication of a 13.8" diagonal patterned retardation element from reactive mesogen, which co-operates with a polariser to form a parallax barrier, is described. An electrically switching LC cell demonstration incorporating a polariser and retarder array ins...
Polarisers are one of the most widely used devices in optical set-ups. They are commonly used with paraxial beams that propagate in the normal direction of the polariser plane. Nevertheless, the conventional projection character of these devices may change when the beam impinges a polariser with a certain angle of incidence. This effect is more noticeable if polarisers are used in optical syste...
We present the study of two polarisation state analysers. The first consists a camera with removable QWP, and second non-polarisation rotating QWP stationary linear polariser. theoretical analysis experiment focus on studying influence polarimeter optical components accuracy errors such as retardation errors, misalignments extinction ratio Stokes parameters precision. This research is cornersto...
Optical couplers are very important devices in optical communication systems and optical sensor systems. Several types of optical couplers with different materials or different transmission characteristics have been reported. Here we propose a semi-reciprocal polarization maintaining fibre coupler with unique transmission characteristics, which is distinct from conventional polarization maintai...
The spectral evolution of fluorescence from 4-(dimethylamino)-4'-cyanostilbene (DCS) in methanol, and of two derivatives bearing either the anilino (ACS) or the julolidino (JCS) moiety, was measured by optical Kerr-gating with a time resolution of 0.35 ps. A special thin Glan polariser in the Kerr shutter allows high contrast without unnecessarily increasing the group delay dispersion. The emis...
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