Gradans light focusing polymeric optical elements with parabolic distribution profile of refraction index

The gradans developed for use as matching units in fiber-optic communication circuits, for optical valves in light guide engineering, in objectives, lenses etc.

The gradans are made of new polymeric optical material based upon cross-linked styrene copolymers. The gradans have the following advantages in comparison to traditional inorganic and polymeric analogs:

• Considerably shorter production time and simplier manufacturing equipment.
• Synthesized semi-manufactured articles are readily fit for machine processing and grinding.
• The products have high radiation stability and weatherability.

Basic characteristics:

• Refraction index gradient – 0,02-0,05
• Numerical aperture – 0,25-0,40
• Linear aperture, mm – 3-20
• Quarter-wave length of Gradans, mm – 10-100
• Focal spot at full linear aperture, micron – 28-57
• Diameter, mm – 5-20

The optical elements with parabolic distribution profile of refraction index based upon cross-linked styrene copolymers may be used for support elements in multimode fiber-optical lines in data transmission systems, for forming optical beams in high-speed opened communication lines units, and also for data collection and transmitting in optoelectronics.

The subject is awarded by RF Patent ¹722128.