Invention Grant
- Patent Title: Vision assistive device with extended depth of field
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Application No.: US17221987Application Date: 2021-04-05
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Publication No.: US12159548B2Publication Date: 2024-12-03
- Inventor: Todd Conard
- Applicant: Freedom Scientific, Inc.
- Applicant Address: US FL Clearwater
- Assignee: Freedom Scientific, Inc.
- Current Assignee: Freedom Scientific, Inc.
- Current Assignee Address: US FL Clearwater
- Agency: Dennemeyer & Associates LLC
- Main IPC: G09B21/00
- IPC: G09B21/00 ; H04N5/232 ; H04N23/959

Abstract:
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.
Public/Granted literature
- US20210225202A1 Vision Assistive Device with Extended Depth of Field Public/Granted day:2021-07-22
Information query