The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 14, 1995
Filed:
Jun. 15, 1994
Chun-Chi Liao, Taichung City, TW;
Other;
Abstract
A transparency adaptor for use in a flat bed type image scanner. The transparency adaptor which is to be displaced on the image window of the image scanner to project uniform 'planar' light through a light-transmittable medium on which image to be scanned is printed so as to eliminate the need of complicated and sophisticated line light source upon the scanning window includes a shallow panel like casing inside which a pair of cold cathode fluorescent lamps (CCFLs) are disposed in a spaced and opposite manner to project light toward each other. A plate-like lighting guide is disposed between the CCFLs to uniformly distribute the light through a given planar area. A reflection sheet is provide to direct the light generated by the CCFLs toward a desired orientation. Light diffusers may be disposed along the out-going path of the light to more uniformly distribute the light through the given area. A cable is provided to supply direct current from the image scanner to an inverter mounted inside the transparency adaptor which converts the direct current to alternate current for starting the CCFLs.