Vermont Photonics Configured Devices

PC‑based electronic autocollimator with fully customizable software.

Digital refractometer to measure refractive index of unpolished glass slugs.

Easy-to-use software to help users make a surface plate calibration.

AKD

Vermont Photonics has developed the AKD Electronic Autocollimator using Möller-Wedel components and standard or customized software.   It replaces the display head with a laptop or desktop computer allowing greater flexibility in data collection and analysis.

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The AKD can be fitted with any of the Möller-Wedel objective tubes for desired accuracy and range. Image analysis algorithms allow measurement of angle, wedge error, 90º and prism error, refractive index, and more. Software can generate reports, log data, and display go/no go status, and can be fully customized to your needs. Please call for more information on the Vermont Photonics AKD.

AKD Models & Specs

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Vermont Photonics HCDR Refractometer

The Vermont Photonics HCDR is a refractometer that uses the Hilger-Chance method to measure the refractive index of glass slugs cut at 90º.

The HCDR combines customized software with precision angle measurement optics and a high accuracy rotary encoder. Index is accurate to ±3×10^-5. Using a spectral lamp and filter wheel, automated measurements at multiple wavelengths can be performed quickly and easily, and Conrady and Sellmeier coefficients can be generated to characterize the dispersion curve of the material. Custom reports can be generated with data and customer/job information etc. The HCDR is a compact unit that fits on a desktop. Please contact us for more information on the Vermont Photonics HCDR.

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SurfaceView Flatness Measuring Software

SurfaceView is designed specifically to help the user make a surface plate calibration that conforms to Federal Specification GGG-P-463c, the standard for surface plates.

Flatness measurements are made as a series of single angle measurements at specified locations.  Electronic autocollimators are the most accurate instruments for the small angle measurements required for a flatness measurement.*

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Click on the PDF icon to the left to view, print or download the SurfaceView Manual

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*Ref: "On the calibration of surface plates,” Measurement 46 (2013) 1019-1028".

SurfaceView, records all the measurements and calculates the surface profile accurately. SurfaceView is designed specifically to help the user make a surface plate calibration that conforms to Federal Specification GGG-P-463c, the standard for surface plates. SurfaceView also allows users to make other, less stringent measurements during production or for a routine check.

Electronic autocollimator measurements can be recorded by SurfaceView automatically and remotely. The user need only move the mirror to the next measurement position.

Other autocollimators or electronic levels can also be used, or data can be entered manually.

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Click on the PDF icon to the left to view an interesting article from 1955 on the "Moody Method" for measuring the flatness of plate surfaces.