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Exclusive dustproof design protects the precision optical components and ensures maintenance-free operation. The BETA200 / 200 S Ophthalmoscopes are the only instruments with an aluminium frame system. Optical components are flush-mounted on a cast aluminum frame, eliminating misalignment and making the instrument shock-resistant. The BETA200 LED has virtually unlimited hours of working life (up to 100,000 hours). No need to ever replace bulbs. Maintenance-free for a lifetime.
Range of lenses: 27 lenses from -35D to +40D. Without macula aperture (pinhole). Exclusive continuous brightness control between 100 % and 3 (patent pending) with one-finger operation. No stray light due to the recessed, multi-coated viewing window – eliminates distractions. Precise one-hand control of the instrument. Ergonomic design offers flexibility while examining. Suitable for large as well as small or undilated pupils. Ergonomic design fits the orbita comfortably, and blocks out ambient light.
[ 01 ] Flat, elliptical illumination beam produced by HEINE’s patented Aspherical Optical System.
[ 02 ] Observation path.
[ 03 ] Redirected iris and corneal reflexes.
[ 04 ] The elliptical light beam enters through the lower half of the cornea. The illumination beam has been separated from the observation beam (Gullstrand-Principle). All reflexes are diverted away from the observation beam due to the curvature of the reflective cornea. Due to the flat, compressed form of the light beam, a maximum amount of light enters through the pupil.
[ 05 ] Once past the anterior chamber, the light beam opens up dramatically to illuminate a large area of the retina.
|Power Sources||BETA 4 USB rechargeable handle with USB cord and plug-in power supply|
|Magnification||27 lenses from -35D to +40D|