Method and structure for image sensor attachment

A method for attaching an image sensor to an optics unit of an imaging device, the method comprising the steps of:

• releasably attaching an attachment part to a sensor attachment surface of the optics unit,
• releasably attaching the image sensor to a sensor holder,
• wherein the sensor holder is positioned in relation to the image sensor by abutting an image sensor abutment surface of the image sensor against a sensor holder abutment surface of the sensor holder, the image sensor abutment surface being a circumferential surface of the image sensor,
• using an active alignment method, adjusting a position of at least one of the image sensor and the optics unit, such that the image sensor is positioned at a desired angle in relation to an optical axis of the optics unit and in a desired position in relation to the optics unit, thereby positioning the image sensor in an aligned position,
• permanently attaching the sensor holder to the attachment part, such that the image sensor is fixed in the aligned position, wherein,
• the image sensor is releasable from the sensor holder when the sensor holder has been permanently attached to the attachment part.