Accessories & Kits

Filter Mount Accessory

This filter mount can be added to the 410 series lenses to allow an external filter (such as band-pass or polarizing filter) to be added to the system. The filter mount works with lenses with 35mm front barrel diameter and is held in place with 3 sharp point set screws. It will accept filters with M55x0.75 threads. Filters are not provided by Theia Technologies.

Part FMT-3555: High performance aluminum filter mount for use with lenses:

  • SL410
  • TL410
  • ML410
  • ML610

Part FMT-3555-S: Modified high performance aluminum filter mount for use with lenses:

  • SL1250
  • TL1250 *

(*special care required when installing filters to prevent damage to the motors)

MCR IQ™ Motor Control Board

Theia Technologies’ MCR IQ™ Motor Control Board series and new MCR IQ™ application facilitate operation of Theia's motorized lenses, allowing users to control zoom, focus, P-iris, and optional IR filters. Theia’s motorized lenses are designed for use in high detail imaging tasks such as ANPR or OCR in intelligent traffic systems. The motor control boards include the MCR IQ™ application with graphical user interface (GUI) and Python module to easily send and receive commands from the board for rapid and convenient evaluation and integration of the lenses. The user doesn’t have to worry about formatting the commands for the board.

The Theia MCR IQ Python module converts motor steps into the specific commands required by the board and sends the commands to the board. The companion GUI allows the user to easily operate the lens through the MCR IQ control board (see below). These programs are built and tested on Windows but are easily adapted for other operating systems.


The motor control board connects to the host computer via USB, UART, or I2C connection. The byte-string commands are the same regardless of connection method. The Theia MCR IQ Python module assumes a USB connection to a computer with a Windows operating system. The user may change this software to fit their needs.

The purchase of the board now includes access to this application through a royalty free license and by using the application software (GUI and/or Python code), the user agrees to the terms of Theia’s (standard BSD) license.

Theia’s motorized lenses come in 4-10mm, 9-36mm, and 12-50mm focal ranges, provide up to 12 megapixel, 300lp/mm resolution and are excellently IR-corrected from 435 – 940nm to maintain their high-resolution performance in the near IR spectrum. The lenses are offered in manual, DC Auto, or P-iris versions, in CS, C mount, and D25 board mount depending on the model. The lenses cover up to 1/1.7” or ½.3” sensor formats depending on the model. The fully motorized lenses come with motorized zoom and focus and combinations with optional integrated IR cut or bandpass filters and photo-interrupter motor stops. The motorized lenses allow for remote set up and occasional zooming and re-focus.

For more details please see the operator's manual and CAD data below.

Download Theia MCR IQ™ Motor Control Board Specification

Download MCR IQ™ Operator's Manual