Patent ID: 9322703
Filing Date: 2016-04-26
CPC Classification: G01J,G02B

Claim Text:
1. A spectroscopic instrument, comprising: a compartment which houses spectroscopic instrument components and is arranged to receive desiccant to protect the instrument components; a deformable container having at least one wall portion which is movable within the compartment so as to vary a volume of the compartment that is occupied by the deformable container as the container is deformed, the interior of the deformable container being in fluid communication with the surroundings of the instrument, such that a difference in pressure between the compartment and the surroundings tends to cause the deformable container to deform, moving the wall portion; and at least one valve for allowing fluid communication between the compartment and the surroundings, when a pressure difference between the compartment and the surroundings exceeds a predetermined threshold.