METHOD OF BONDING AN OPTICAL ELEMENT WITHIN AN ENCLOSURE

摘要

The invention provides a method of bonding an optical element within an enclosure, the method comprising providing an optical element within an enclosure having interior walls configured and sized to surround the exterior walls of the optical element with clearance, so as to form a space therebetween; introducing into the space members having a cross-section substantially the same as the cross-section of the space at the locations of the members; filling the space with adhesive which does not adhere to the members, and removing the members, forming air-filled voids which cause the reduction of stress in the optical element when its temperature changes. The invention further provides an optical system to be used in the described method.