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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.

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-4 Semi PLAN
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........................................$899

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I-4PB. Infinity PLAN, Binocular
#I4PB......................................$1,299

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Trinocular-head models:

I-4ST. Infinity Semi-PLAN, Trinocular
#I4ST......................................$1,149

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I-4PT. Infinity PLAN, Trinocular
#I4PT.....................................$1,499

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Accessories for the I-4

M250XPi Infinity PLAN 50x Oil objective
50x Oil Immersion Objective, Infinity PLAN
#I4O-050X-IPOL.......................................$649
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.

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Hard Carry Case for the I-4
#I4P-CSE7-HDLK......................................$159
The microscope is a delicate instrument with precision-aligned optics. Protect your investment with a hard case made just for the I4.

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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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M2 Lab Scope




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Revelation III Microscope




Bio-VID CCD camera
Bio-VID color CCD camera



Mini-VID eyepiece camera
MiniVID eyepiece camera