Vision assistive device with extended depth of field
The present disclosure relates to a vision assistive device for use by blind or low vision users. The device includes an imaging unit for viewing objects positioned beneath the device. The device further includes a forwardly facing screen for displaying an enlarged view of the imaged object to the u...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The present disclosure relates to a vision assistive device for use by blind or low vision users. The device includes an imaging unit for viewing objects positioned beneath the device. The device further includes a forwardly facing screen for displaying an enlarged view of the imaged object to the user. The imaging unit is configured to take multiple views of the object, each with a different area of focus. This can be accomplished by digitally changing the imaging sensor's area of focus or by pivoting the sensor via a focus motor. In either event, the resulting images are combined into a single, integrated, focused, and composite image. Combining images with differing areas of focus helps eliminate any blurry regions in the composite image. The device further includes a rearwardly positioned fin that facilitates positioning the device in multiple different orientations. In a first orientation, the device is vertically positioned upon a desktop. In a second orientation, the device is reclined and placed in the user's lap with the fin positioned between the user's legs. |
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