Portable optic metrology thermal chamber module and method therefor

A portable optic metrology thermal chamber module comprising:

• a housing defining a thermal chamber, with a thermally isolated environment therein isolated from ambient atmosphere, the thermal chamber being arranged for holding an optic device under test within the isolated environment;
• the housing having an optic stimulus entry aperture configured and disposed with respect to the optic device under test within the thermal chamber, for entry of a stimulus beam, from a metrology system stimulus source outside the thermal chamber, through the optic stimulus entry aperture onto an entry pupil of the optic device under test to an image analyzer;
• and
• a module mount coupling connected to the housing, the module mount coupling defining a module mounting interface of the portable optic metrology thermal chamber module so as to modularly mount the portable optic metrology thermal chamber module to a support of a metrology system of the metrology system stimulus source, the module mounting interface being configured so as to removably couple the portable optic metrology thermal chamber module as a unit to the support in a predetermined position relative to the metrology system stimulus source, and the housing is sized and shaped so that the portable optic metrology thermal chamber module is portable as a unit for moving to and removing from the predetermined position of the metrology system.