Model K1 CentriMax™

K-Series Long-Distance CentriTel® Video Microscope

  • CentriTel® Internal Focusing System for Constant Magnification
  • Focuses from 3 METERS to 60mm with MX-Series Objectives
  • Adapts to C or T-mount Cameras
  • Large Format Capability to 4/3-in. sensors
  • Accessories Enable Use up to 35mm (24mmx36mm) Sensors
  • Can be Equipped with Infinity-corrected Microscope Objectives—to the Theoretical Limits of Optical Microscope Resolution
  • Coaxial In-line Illuminator (optional) for Reflective Objects
Model K1 CentriMax
Model K1 CentriMax and MX-4 Objective. Shown with C-Mount and optional Mounting Bar.
Model K1 CentriMax
Model K1 CentriMax and MX-4 Objective. Shown with T-Mount and optional Mounting Bar.
Model K1 CentriMax
Model-K1-CentriMax.pdf Size: 839.98 KB Updated: 10/20/2015
  • Optical Data
  • Magnification Tables
  • Instruction Manual
Model-K1-CentriMax.pdf Size: 19.77 KB Updated: 1/13/2017
  • Pricelist
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Model K1 CentriMax Long-Distance Video Microscope

Challenge: Design a Long-Distance Microscope with nearly the same resolution of Infinity's flagship Model K2 DistaMax, provide it with internal focusing that maintains constant magnification from any chosen working distance and impart the ability to make precise Z-depth measurements over many times the original depth of field.

Challenge met: Model K1 CentriMax—Infinity's premier CentriTel optic.

Now, the original CentriMax has been reconfigured mechanically with the same robust construction as our Model K2 DistaMax. It now joins the K2 DistaMax as a true K-Series Long-distance Microscope, earning the K1 designation. No longer just a C-mount optic, the K1 CentriMax can also be used with T2 (e.g., "F-mount") cameras as well—directly with formats up to 4/3-in. When larger formats are desired or when "flip-mirror" DSLRs are used, all that is required now, is to use a NTX 2x Amplifier at its rear.

USAF Test Chart
USAF Test Target @ 630mm (25 inches)
K1 CentriMax with MX-1 Objective on Basler acA2000-50gm camera.
Courtesy of Robert Eastlund, Graftek Corporation.
iPhone 5 screen
iPhone 5 screen @ 630mm (25 inches)
K1 CentriMax with MX-1 Objective on Basler acA1300-30gm camera.
Courtesy of Robert Eastlund, Graftek Corporation.

Note: "Flip-mirror" DSLRs can not be used directly on the K1 CentriMax unless the NTX Tube is added because the rear construction does not allow this. In any case, DSLRs have large formats which require the use of the NTX Tube for proper functioning. No attempt should ever be made to attach the K1 CentriMax directly to a flip-mirror DSLR unless the NTX Tube is interfaced.

The K1 CentriMax can be actively focused anywhere from 3 METERS to 60mm by using supplemental MX-Series objectives. Once a working distance is chosen, its patented CentriTel® internal focusing system allows

focusing objects from top to bottom without magnification change.

Unlike its Model KX InfiniMax(tm) stablemate, the K1 CentriMax does not need physical movement to maintain magnification by a resetting of the focus. Rather, the CentriTel® internal focusing system inside each CentriMax maintains essential magnification as a constant during active focal translation. Depth details peel away, yet magnification remains essentially constant.

The Model K1 CentriMax is perfect for montaging and making measurements from a fixed position. The K1 CentriMax represents an entirely new approach to 3-D imaging and data collection. All this from a long-distance microscope that more than holds its own in terms of world-class resolution and stunning imagery.

A 2mm water drop vibrating over a speaker
Video Credit: "SLAM Mexico" www.corpslam.com
(Infinity Photo-Optical's distributors for Mexico and Latin America).

As if this were not enough, the front of each K1 CentriMax can be supplemented by adapters for transmitted or coaxial in-line illumination — for use with Achrovid™, Mitutoyo, Edmund, Olympus or Nikon infinity-corrected objectives. The standard S-Front assembly of the K1 CentriMax can be removed and a special Z-Front can be put in its place. By using the Z-Front, Zeiss ICS objectives can be compatibly used as well. When infinity-corrected microscope objectives are used on CentriMax, the total system power is amplified (depending on the objective's make) by about a 2x factor. The correct position for focus is set at 180-degrees of the K1 CentriMax's 360-degree focus. That's all you need to do to set a microscope objective at its proper starting focus. Then, focus can be extended up or down—without external movement. You can put CentriMax on—even in—machines or assemblies. Now, you can fixture an imaging system and let it do the up and down focus—optically. A full line of accessories supports the capabilities of this revolutionary optic.

This is CentriTel
This is K1 CentriMax!

Whether manual or motor-driven, K1 CentriMax is perfect for montaging and making measurements from a fixed position. On K1 CentriMax, this represents an entirely new approach to 3-D imaging and data collection. When motorized and software driven K1 CentriMax can be used to make measurments and reconstructions heretofore impossible from a fixed-positioned optic.

All this from a long-distance microscope that holds its own in terms of resolution and stunning imagery. What more can we say? Take another look:

This is CentriTel
This is K1 CentriMax!

CentriTel and Format Size with the K1 CentriMax

CentriTel is based on a certain derivative of Abbe's Sine Condition.  Simply, a microscope's field of view must have the same magnification throughout from center to edge.  In CentriTel mode, the K1 CentriMax maintains magnification not only at one focal plane, but at all provided by the internal focusing system.  This derivative of the Abbe Sine Condition can only be met up to a 2/3-in. format with MX-Series Objectives.  This is absolutely no problem in terms of the image quality when large formats are used directly (e.g. F-mount cameras).  The image will still be excellent.  But the CentriTel feature will not hold with these formats when the K1 CentriMax is used directly with them.  In order to maintain CentriTel function with large formats, an amplifier (such as the NTX Tube) must be used to restore the field that is in accordance with the Abbe Sine Condition.

Difficult Research Imaging Solved by the K1 CentriMax

Liquid-liquid dispersion of organic-in-aqueous (i.e., "oil-in-water") from in-situ mixing in an annular centrifugal contactor. The red color comes from Nile Red fluorescence dye in the organic (dispersed) phase. Entrained air bubbles are also visible. Nikon D7000 camera was used with Infinity K1 CentriMax (with NTX 2X tube and MX-6 objective) and a SPOT 500ns Flash from Prism Science Works. Photo courtesy Kent E. Wardle, Argonne National Laboratory. Read more »
Cinemaphotomacrography: The Model K1 shown with ARRIFLEX mount.

Perfect for Breadboarding and OEM Applications

Z-Front

As if this were not enough, the front of each K1 CentriMax can be supplemented by adapters for transmitted or coaxial in-line illumination for use with Achrovid™, Mitutoyo, Edmund, Olympus or Nikon infinity-corrected objectives. Further, the S-Front assembly of the K1 CentriMax can be removed and a special Z-Front can be put in its place. By using the Z-Front, Zeiss ICS objectives can be compatibly used on K1 CentriMax. When infinity-corrected microscope objectives are used on K1 CentriMax, the total system power is amplified (depending on its make) by about a 2x factor. The correct position for focus is set at 180-degrees of K1 CentriMax's 360-degree focus. That's all you need to do to set a microscope objective at its proper starting focus. Then, focus can be extended up or down—without external movement.

Mounting Clamp with optional Mounting Bar

K1 CentriMax comes with a Mounting Clamp which has a 1/4-20 central tap and two "outboard" M4 taps. A central 24mm tube is designed to be exchanged for integral mounts for stereomicroscope and "boom" stands". You can put K1 CentriMax on—even inside—machines or assemblies. Now, you can fixture an imaging sytem and let it do the up and down focus—optically. A full line of accessories supports the capabilities of this revolutionary optic.

There's never been anything like K1 CentriMax because there's never been anything like its internal CentriTel focusing system. The possibilities are truly endless.

Model K1 CentriMax are trademarks of Infinity Photo-Optical Company.
CentriTel® is a Registered Trademark of Infinity Photo-Optical Company.

U.S. Patents 4,988,173, 7,869,139 and 9,164,266 may apply to this product.