Beam expander

Beam expander with 4 rod structure and lens holders, power supply and variable filters is able to expand light beams with the aid of different lenses.
This device is consisted of two lenses with 10 micron linear accuracy that expands the light beam. Furthermore it is contains an adjustable base for the elevation.
The specimen is installed on a stage that moves in one axis and the sensor is installed on another stage vertical in respect to specimen in which the combination of these two movements enables specimen surface measurement. According to mechanical restriction surface measurement accuracy is up to one micrometer.


  • Able to add pinhole
  • Able to add filters, crevice, pilaried
  • Possible to work with any light source
  • Able to change magnification
  • Inconsistent with variable lenses with different focal lengths
  • Able to install in different devices due to elevation adjustment

About Us

Fanavari Kahroba Company started its activities in 2011 with manufacturing EMC Camera device and began to be a member of science and technology park of University of Tehran since 2012. Later on with devising thin film thickness measurement device and far distance Moiré measurement device, its official activities in precis measurement industry begun. Its optical surface topography measurement devices was introduced in 2014. Thanks to first ranked graduate elites, Kahroba’s company has devised several products with no international competitors. In addition, its products have the advantage of consumers support, precision calibration and being financially affordable for local manifactures. Among the highest valued policies of Kahroba’s company, science management can be mentions. Its most precious investment is expert graduate researchers. Reaching high shares of optical based measurement devices in the international market is one of the perspectives of Kahroba’s company. This aim not only does increase national economical growth, investment return and export, but also it does help to improve scientific foundation of the country and creating more job opportunities. In order to achieve this goal, Kahroba’s mission is devising high precise optical based measurement devices without international competitors based on national scientific experts. Academic customers, research projects, industrial customers, International exhibitions

16 Academic customers
25 Research projects
13Industrial customers
27 International exhibitions


Our Customers

Products Calatogue


Contact Us

No 211,Building 2 ,Tehran University of Science & Technology Park,North Amir Abad , Tehran

021 86094102

021 86093205