Shenzhen Transsion has been granted a patent for a fill light device that includes a flash light and a light guide. The method for controlling the device involves face detection, pupil identification, and adjusting the light guide to change the light-exiting area and angle. GlobalData’s report on Shenzhen Transsion gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Shenzhen Transsion, Gesture-based recognition systems was a key innovation area identified from patents. Shenzhen Transsion's grant share as of February 2024 was 21%. Grant share is based on the ratio of number of grants to total number of patents.
Method for controlling fill light device based on face detection
A recently granted patent (Publication Number: US11906878B2) discloses a method for controlling a fill light device that includes a flash light and a light guide. The method involves performing face detection on a preview image captured by a camera module, identifying the position of the pupil upon detecting a face, determining a light-shielding area of the light guide based on the pupil position, and calculating a light-emitting angle of the fill light device according to the distance between the target and the device. By adjusting the shape and light-transmitting area of the light guide, the light-exiting area and light-emitting angle of the fill light device can be modified to enhance the quality of the captured image.
Furthermore, the patent includes details on controlling the flash light to pre-flash at a preset power or continue lighting during the preview image acquisition process. The method also involves changing the orientation of the liquid crystal layer within the light guide to make it opaque in specific areas, based on the determined light-shielding area. Additionally, the patent describes the use of a diastimeter to detect the distance between the capturing target and the fill light device, enabling the determination of the optimal light-emitting angle. The fill light device can be further customized with multiple flash lights arranged in parallel or a matrix, providing flexibility in the lighting setup for photography or video recording applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
