in a similar way as the previously described or slightly different if the liquid lens is made of metal one electrical contact is for example done by the liquid lens holder and an electrically insulating ring made of plastic for example will be introduced between the liquid lens cap and the liquid lens holder in order to avoid electrical shortcut see fig9 to 12 the z alignment may be performed by moving up and down the liquid lens in the liquid lens holder a variable glue thickness may be used to compensate the gap in an alternative embodiment the liquid lens holder comprises means allowing adjusting the z position for example legs that can be plastically deformed when applying pressure in the z direction from top to bottom one advantage of such an embodiment is that the lens module maker may receive an optical part that can be easily integrated with the rest of the lens stack nearly like any other lens system according to another embodiment the aa is performed at the lens module manufacturing level and not at the liquid lens level in such an embodiment the z position is adjusted during the integration of the optical device comprising the liquid lens and the liquid lens holder in the lens module comprising other optical elements according to another embodiment the liquid lens holder comprises an aperture stop as illustrated for example in fig1 this solution is particularly.