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Available calibration data
The following calibration data frames are provided in a JSON format data file. The calibration curves are monitored from lens lot to lot to verify the continued accuracy of the curves. When a Theia IQ lens™ is purchased, the most recent average data file is provided (available from online download).
Data Frame | Y axis | X axis |
---|---|---|
Focus / Zoom tracking* | Focus motor step | Zoom motor step |
Focal length conversion* | Zoom motor step | Focal length [mm] |
Distortion^ | Object angle [deg] | Image height [mm] |
Relative illumination^ | Illumination [%] | Image height [mm] |
Aperture^ | Aperture [1/(2*F/#)] | Iris motor step |
Iris diameter^ | Iris short diameter | Iris motor step |
*Average measured data
^Design data
Learn about Theia’s family of individually measured Calibrated lenses, here.
Calibrated lens back focal length (BFL) calibration procedure
Due to the tolerances in the camera sensor and mount positions, there is a difference between the lens best focus position and the calibrated focus position. To mitigate this, the lens focus position should be set visually and compared to the calibrated focus motor step from the data file at several focal lengths. The Back Focal Length (BFL) calibration procedure is described in application note AN004. Depending on the application, a fine focus adjustment may be required for optimal focus.
TL1250P-IQ N5 CS |
Selected: TL1250P-IQ N6 CS |
TL1250P-IQ 850C N6 CS | TL1250P-IQ 940C N6 CS | TL1250P-IQ 940V N6 CS | |
---|---|---|---|---|---|
Motorized Focus / Zoom | ✓ | ✓ | ✓ | ✓ | ✓ |
Focus / Zoom Limit Indicator (Photo Interrupter) | ✓ | ✓ | ✓ | ✓ | ✓ |
Iris Type | P-iris | P-iris | P-iris | P-iris | P-iris |
Filter Switch | - | visible / clear | 850nm / clear | 940nm / clear | visible / 940nm |
Mount Type | CS-mount | CS-mount | CS-mount | CS-mount | CS-mount |
Calibration Type | Running Average | Running Average | Running Average | Running Average | Running Average |
Additional integrated bandpass and longpass filter options may be possible. Other lens versions with different feature combinations are also possible. For more information on these topics, please inquire here: Contact Us
The TL1250P-IQ lenses are compatible with the MCR IQ Motor Control Board.
Theia TL1250P-IQ N6 CS Lens Specification
Theia TL1250P-IQ 850C N6 lens specification
Theia TL1250P-IQ 940C N6 Specification
Theia TL1250P-IQ N5 specification
THEIA Motorized Lens Specification
THEIA Certificate of Conformance
THEIA CE UK RoHS III REACH Declaration of Conformity
THEIA NDAA Compliance Statement
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:
For ease of evaluating Theia’s motorized lenses Theia offers a motor control board. This board allows the user to control zoom, focus, P-iris, and IR cut filters (there is no control for DC auto iris lenses). For evaluation, we offer a Windows based test program to communicate over USB. You may also communicate over i2c or UART from within your own program. Details are covered in the instruction manual from the link below, as well as CAD model and drawing of the board.
For ease of evaluating Theia’s motorized lenses Theia offers a motor control board. This board allows the user to control zoom, focus, P-iris, and IR cut filters (there is no control for DC auto iris lenses). For evaluation, we offer a Windows based test program to communicate over USB. You may also communicate over i2c or UART from within your own program. Details are covered in the instruction manual from the link below, as well as CAD model and drawing of the board.