Waveplates (retardation plates or phase shifters) are made from materials which exhibit birefringence. The velocites of the extraordinary and ordinary rays through the birefringent material varies inversely with their refractive indices. This difference in velocitiesgives rise to a phase difference when the two beams recombine. In the case of an incident linearly polarized beam this is given by δ=2πd(ne-no)/λ, where α is phase difference; d is thinkness of waveplate; ne, no are refrective indices of extraordinary and ordinary rays respectively; λ is wavelength. At any specific wavelength the phase difference is governed by the thinkness of the retarder.Standard WaveplatesIncluding full-wave (λ), half-wave (λ/2), quarter-wave (λ/4) and octadic-wave (λ/8) plates are widely used in synthesis and analysis of light in various states of polarization. Specification of our waveplate as follow:*Dimension Tolerance:+/-0.20mm to +0.01/-0.01mm *ThicknessTolerance:+/-0.20mmto +/-0.005mm *Surface Quality:80-50 to 10-5 *Flatness: at 633nm lambda -- lambda/20per 25mm *Clear Aperture:80% -- 100% *Parallelism(arc min):3min -- 3sec*Crystals directional precision:5min to 30sec*Bevel:0.3+/-0.20mm* 45degree *No Bevel *Coating R
Plano-Convex Lens is widely use in optical display systems, projection optics systems, imagining optical systems, and laser measurement systems. It is best use where conjugate point-- object distance,
Rod Lenses are highly polished small diameter rods made of optically transparent homogeneous materials. A carefully controlled manufacturing process produces rods (or fibers) with precise diameters an
Wedge prism is an optical element having plane-inclined surfaces, usually the faces are inclined toward one another at very small angles. Wedges divert light toward their thicker portions.Wedge prism
A lens cover or lens cap provides protection from scratches and minor collisions for camera and camcorder lenses. Lens covers come standard with most cameras and lenses. Some mobile camera phones incl
Meniscus Lens can increase the NA of the system while only adding slightly to the total spherical aberrations. The Negative Meniscus Lens is used to increase the focal length of another lens while mai
Nd:YVO4 crystal is one of the most excellent laser host materials, it is suitable for diode laser-pumped solid state laser. The crystal has these main features: low lasing threshold, high slope effici
In photography, a lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare.The geometry of the lens hood can vary f
Adapter ring is used between camera(or projector) and lenses,it could mount kinds of conversion lenses,such as telephot lens,wide angle lens,fisheye lens,and so on.Adapter rings are labeled from
The dome lens/hemisphere dome we manufactured be used to protect the lens of underwater camera,which could resist the pressure of water,and give a best view field to catch picture.Specification of hem
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