Space navigation optical instrument and contaminant removing method thereof
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorKazuhiro Nagae
Life of this patent
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Abstract
In a space navigation optical instrument comprising a barrel for housing therein an optical part and a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space, a thermal gradient is generated in which the inside of the barrel is of a high temperature and the space is of a low temperature, and the inside of the barrel is opened to the space by opening the contaminant removing door to discharge contaminants into the space.
Claims10
A space navigation optical instrument comprising:
- a barrel for housing therein an optical part;
- and
- a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat rate coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space.
A method of removing contaminant for a space navigation optical instrument comprising a barrel for housing therein an optical part and a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat rate coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space, the method comprising the steps of:
- generating a thermal gradient between the inside of the barrel of a high temperature and the space of a low temperature;
- and
- opening the inside of the barrel to the space by opening the contaminant removing door to discharge the contaminant into the space.
Dependencies are inferred from the claim text.