Invention Publication
- Patent Title: METHOD FOR RECORDING ULTRA-SHORT-EXPOSURE, HIGH DYNAMIC RANGE IMAGES AND RELATED IMAGING DEVICE
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Application No.: US18370441Application Date: 2023-09-20
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Publication No.: US20240129646A1Publication Date: 2024-04-18
- Inventor: Lau NØRGAARD , Thomas ANDERSEN
- Applicant: Phase One A/S
- Applicant Address: DK Frederiksberg
- Assignee: Phase One A/S
- Current Assignee: Phase One A/S
- Current Assignee Address: DK Frederiksberg
- Priority: DK 202270459 2022.09.21
- Main IPC: H04N25/532
- IPC: H04N25/532 ; H04N25/78

Abstract:
In global shutter image sensors, the light shields are often not completely lightproof and incoming light causes continued generation of charges in the shielded storage units even after the global shutter functionality has ended exposure, such as during the readout of the recorded image. This ‘parasitic light’ degrades the recorded image. Disclosed is a method, performed by an imaging device with a global shutter image sensor, for recording an image with reduced degrading effects from parasitic light in the image sensor. The disclosed imaging device and related method combine the global shutter functionality of the global shutter image sensor with a shutter such as a mechanical shutter. A precise synchronisation of the closing of the shutter means that the shutter can block all incoming light—and thus stop parasitic light in the image sensor—shortly after the exposure is stopped by the global shutter image sensor. This allows the imaging device to record very short exposure images without the detrimental effects of parasitic light.
Public/Granted literature
- US12212863B2 Method for recording ultra-short-exposure, high dynamic range images and related imaging device Public/Granted day:2025-01-28
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