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Q:  What are "infinity" optics?

A:  Essentially, they yield a collimated beam (parallel light rays) that is focused into an image by way of an additional lens in the light path.  This allows for an added degree of image correction.  Infinity optics have to be used in a microscope that was specially designed for them (such as the I4 or M2 lab scopes).
 

 

Q:  What are Achromatic, PLAN, and Semi-PLAN?

A:  Achromatic is a standard lens type designed to reduce or eliminate chromatic (color) aberration.  Semi-PLAN and PLAN optics are improvements over the basic type.  They "flatten" the field of view (i.e., more of the subject appears in the plane of focus).  Full PLAN optics are the most expensive but allow the greatest "flattening" of the image.  







































CR Scientific

I-4 medical and lab microscope
We are pleased to offer the new I4 lab scope, a stunningly high-quality microscope at a hard-to-believe low price.  This microscope is really turning heads.   It's an economical unit that offers meaningful competition to Nikon, Olympus, Leica, and Zeiss.

The I-4 doesn't start at $2,000 or even $1,500.
 
The I-4 starts at only $710.  

That comes standard with Infinity Semi-PLAN achromat objectives having a 30-year antifungal coating.

I-4 models are available with additional features:  full PLAN, darkfield, phase contrast, and trinocular head.  The binocular model can be fitted with the handy, easy-to-use Mini-VID eyepiece camera or the high-resolution Bio-VID CCD camera.  Trinocular-head model lets you attach the Bio-VID or other C/CS mount  CCD camera for high-res photomicrography while keeping both eyepieces free..

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I-4SB
Specs & Features:
• 40x / 100x / 400x / 1000x total magnification
Infinity Semi-PLAN optics are standard!
• Optics have 30-year anti-fungal coating
"Daylight" LED illumination, 0 to 20 watt adjustable intensity
• Multi ball-bearing nosepiece
• Rotating headpiece
• NA 1.25 Iris diaphragm / moveable Abbe condenser
• Mechanical stage w/ fine control
• Coaxial focus (coarse & fine) with tension control knob
• Lifetime manuf. warranty
(excludes bulbs and fuses)


The I4 SB lab scope


Binocular-head models:

I-4SB. Infinity Semi-PLAN, Binocular
#I4SB.........................................$960  Our price $710
Save $250 off the manufacturer's retail price!

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I-4PB. Infinity PLAN, Binocular
#I4PB.......................................$1249  Our price $990
Save $259 off the retail!

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Trinocular-head models:

I-4ST. Infinity Semi-PLAN, Trinocular
#I4ST......................................$1190  Our price $920
Save $270 off the retail!

Quantity:


I-4PT. Infinity PLAN, Trinocular
#I4PT.....................................$1500  Our price $1250
Save $250 off the retail!

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Accessories for the I-4

M250XPi Infinity PLAN 50x Oil objective
50x Oil Immersion Objective, Infinity PLAN
#M250XPi..............................................$700  Our price $599
Allows for 500x magnification with a much better image than an "air" objective can give.  This is the highest-resolution objective for the I4 and provides twice the field of view as the 100x oil objective.  Great for differential counting.  
Will work on many other brands of microscope that accept Infinity objectives.

Quantity:









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If you're looking for a microscope to view minerals, fossils, gems, stamps, dissected biology specimens, prints, etc., please have a look at the Paragon and Achiever stereo inspection microscopes.



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Mini-VID eyepiece camera
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