Floating light source module for film scanners
AssigneeAvision Inc.
InventorThomas Sheng
Life of this patent
Estimating the term…
Abstract
The separation between the light source module for a film scanner and the protection window for pressing against the film document is minimized to increase light intensity by inserting low friction material between the scanning light source module and the protection window. The pressure is exerted by means of a spring or gravity.
Claims17
A light source module for a film scanner having a scan window over which a film document lies, a protection window for protecting said light source module and pressing said film document against said scan window, and an optical module for sensing and processing optical signals transmitted through said film document, said light source module comprising:
- a light source for transmitting light through said film document;
- a carriage for moving said light source;
- a guide for said carriage;
- means for pressing said light source module toward said protection window and toward said optical module;
- and
- low friction material inserted between the lowest point of said light source and said protection window and preventing said light source from rubbing said protection window when said light source module is scanning over said protection window.
A light source module for a film scanner having a scan window over which a film document lies, a protection window for protecting said light source module and pressing said film document against said scan window, and an optical module for sensing and processing optical signals transmitted through said film document, said light source module comprising:
- a light source for irradiating said film document;
- a carriage for moving said light source;
- a guide for said carriage;
- means for pressing said light source module toward said protection window;
- and
- low friction material inserted between the lowest point of said light source and said protection window and preventing said light source from rubbing said protection window when said light source module is scanning over said protection window, wherein said means for pressing is gravity of the light source module.
A light source module for a film scanner having a scan window over which a film document lies, a protection window for protecting said light source module and pressing said film document against said scan window, and an optical module for sensing and processing optical signals transmitted through said film document, said light source module comprising;
- a light source for irradiating said film document;
- a carriage for moving said light source;
- a guide for said carriage;
- means for pressing said light source module toward said protection window;
- and
- low friction material Inserted between the lowest point of said light source and said protection window and preventing said light source from rubbing said protection window hen said light source module is scanning over said protection window, wherein said light source is hanging uncovered in said light source module without being enclosed, and said low friction material wraps around said light source.
Dependencies are inferred from the claim text.