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is a breakthrough patented accessory for use with conventional binocular
ISIS dramatically reduces eyestrain and allows the operator freedom of
head position. The unmatched eye distance of 38mm allows, for the first time, prescription
eyeglasses to be worn in complete comfort, with common weaknesses (long and short sight,
astigmatism) no longer affecting user efficiency. Throughput and accuracy are enhanced,
despite prolonged periods of microscope use.
into the eyepice tubes of existing binocular microscopes
Can be used with stereo, compound momo, infinity corrected or finite, upright or
inverted microscopes of most leading brand names
Titting takes 60 seconds and is easily carried out by the user
Can be used with camera adapters, trinocular heads, and other accessories
Improves the optical performance of most stereo and mono microscopes at all
magnifications from 6x - 1200x
Works well with biological, metallurgical and oil immersion objectives
Can be used with a variety of illuminators including: polarization,
fluorescence, bright/dark field, Normarski, phase contrast, etc.
Dual ISIS eypieces with rotating
multilenticular disks for exit pupil expansion
Powered by 12v DC transformer (all
international variants available) with dual LED power indicators
Eyepiece magnification extending lenses of
10x, 15x, 20x available (10x is standard)
A range of standard and customized
graticules may be fitted to either eyepiece and rotated
Straightforward controls provide eyespacing,
operator diopter setting, and parfocality adjustment
Unpacked weight: 3 lbs
Packed weight: 5 lbs
How It Works
The patented ISIS accessory deploys Vision Engineering's award-winning
Expanded Pupil (EP) Technology and simply fits in place of the traditional eyepieces on
mono, routine, research, and stereo microscopes.
ISIS offers an exit ray bundle twelve times larger than a
conventional eyepiece, permitting a greater freedom of head movement shich reduces fatigue
and additionally increases the distance between the user's eyes and the eyepiece by a
factor of four. The Expanded Pupil image is generated by a pair of tiny multifaceted
transfer disks; one 83mm diameter disk for each eyepiece. Their surfaces contain over 2
million individual linticules (lenses) and spin at high speed to merge the millions of
individual optical paths, delivering an aberration-free, high-clarity image.
ISIS overcomes the usual requirement for users to precisely align their eye with
the center of each eyepiece.
Conversely, conventional eyepieces have a narrow exit ray bundle,
so users are required to precisely align their eye with the center of each eyepiece.
Typically, a slight movement of the eye results in loss of part of the field of vision as
the pupil moves beyond the narrow conventional ray bundle.
Information & Ordering
ISIS is designed to fit most microscopes with 30mm diameter eyepiece tubes, but will
shortly be compatible with microscopes with 23mm diameter eyepiece tubes.
ISIS fits most
well-known other-brand microscopes, with the number of compatible systems constantly
increasing as Vision Engineering continues their development process. To find out how ISIS
can be retrofitted to your current microscope, please contact Lab Essentials, Inc. at
1-888-522-7226. We will need your microscope manufacturer and model number.
and text copyright 2000 Vision Engineering. Used by permission.
Please visit Vision Engineering's website at www.visioneng.com.