Intra-dewar structure
A system including an optical system having at least one refractive or reflective element, the optical system configured to substantially receive electromagnetic radiation emanating from a source, the optical system being located within a Dewar, a support structure, support structure being mechanically disposed between the optical system and a surface of the Dewar, the support structure having substantially low thermal conductance, a cold source; the cold source being located within the Dewar, a thermal link, the thermal link being mechanically disposed between the optical system and the cold source, the thermal link being substantially flexible and having substantially high thermal conductance.
1. A cryogenic optical device comprising:
a Dewar vessel;
a cold finger;
a thermal link;
said thermal link configured to be flexible;
a support structure;
said support structure disposed between cold and warm components; said warm components comprising an inner surface of said Dewar vessel;
said support structure comprising one or more spiders;
said one or more spiders being mechanically disposed between said cold and said warm components;
said cold components comprising an optical system;
said cold finger not being supported by said support structure;
said optical system comprising at least one of an imager or an imaging spectrometer;
said one or more spiders having a geometric shape;
said one or more spiders configured to minimize thermal conductivity between said cold components and said warm components;
said one or more spiders further configured to rigidly support for said cold components with respect to said warm components;
said cold components also configured to not be supported by said cold finger;
said cold finger flexibly and operatively thermally connected to said cold components by said thermal link;
said cold components, cold finger, and support structure disposed inside the Dewar vessel.
2. The cryogenic optical device of claim 1 , wherein said one or more spiders further comprise wires or filaments or spokes or sheet material in tension; said geometric shape of said one or more spiders is maintained by said tension.
3. A cryogenic optical device comprising:
a Dewar vessel;
a cold finger;
a thermal link;
a chassis;
said thermal link configured to be flexible;
a support structure;
said support structure disposed between cold and warm components; said warm components comprising said chassis;
said support structure operatively connected to said chassis;
said cold finger not being supported by said support structure;
said support structure comprising one or more spiders;
said one or more spiders being mechanically disposed between said warm components and said cold components;
said cold components comprising an optical system;
said optical system comprising at least one of an imager or an imaging spectrometer;
said one or more spiders having a geometric shape;
said one or more spiders configured to minimize thermal conductivity between said cold components and said warm components;
said one or more spiders further configured to rigidly support said cold components with respect to said chassis;
said cold components also configured to not be supported by said cold finger;
said cold finger flexibly and operatively thermally connected to said cold components by said thermal link;
said chassis, said cold components, said cold finger, and said support structure disposed inside said Dewar vessel;
said chassis being configured to be removable from said Dewar vessel.
4. The cryogenic optical device of claim 3 wherein said one or more spiders further comprise wires or filaments or spokes or sheet material in tension; said geometric shape of said one or more spiders being maintained by said tension.
5. The cryogenic optical device of claim 3 wherein said chassis is a warm component.