opto engineering ITALA - OE Liquid Lens Control; Liquid Lens Interface

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Itala | INSTRUCTION MANUAL

6.17 OE Liquid Lens Control

This section describes all the features related to the liquid lens control.

Feature Description Interface Access

oeLiquidLensEnable Enable the liquid lens controller IBoolean RW

oeLiquidLensConﬁgurationData Get the conﬁguration for the

liquid lens

IEnumeration R

oeLiquidLensSerialNumber Liquid lens serial number. This

string is a unique identiﬁer of the

liquid lens

IString R

oeLiquidLensTemperature Temperature read by the sensor

integrated in the liquid lens

(available on speciﬁc models

only)

IFloat R

oeLiquidLensMode Select the lens control mode IEnumeration RW

oeLiquidLensMaxPositiveCurrent Maximum positive current which

can be applied to the lens

IFloat RW

oeLiquidLensMaxNegativeCurrent Maximum negative current

which can be applied to the lens

IFloat RW

oeLiquidLensCurrent Set the liquid lens coil current IFloat RW

oeLiquidLensPower Set the liquid lens focal power IFloat RW

oeLiquidLensResultingCurrent Resulting liquid lens coil current IFloat R

oeLiquidLensResultingPower Resulting liquid lens focal power IFloat R

Table 35: OE Liquid Lens Control Features

6.17.1 Liquid Lens interface

The liquid lens interface allows to control an Opto Engineering® product with liquid lens tech-

nology directly from the camera device. This ensure maximum integration with the camera SDK

and compatibility with third party software thanks to GigE Vision and GenTL standards.

The interface can operate in two diﬀerent modes:

• EEPROM mode;

• manual mode;

In EEPROM mode the camera automatically detects the connected lens and read the calibration

data from the embedded EEPROM. Through the GenICam feature tree is possible to read the lens

attributes and directly set the lens focal power. The EEPROM also includes a temperature sensor

used by the controller for thermal compensation of the lens current. This ensures a costant focal

power across a wide range of operating temperature. It’s also possible to directly control the lens

current and check for the actual resulting focal power, which depends on the lens temperature.

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