Raynauld Ltd. is a creative company that represents several international patents and the related products exclusively.

At present, we have the following patents available for business developments:

Directivity White Balance Filter


Product introduction & how-to-use video

Camera Filter White Balance Device


White Balance Device for Video Screen

DWB Filter can be used to calibrate the camera white value to zero against the screen for true color photo. It does the same for camera video and helps every people to shoot color almost perfect 4K video.

With DCC40 to calibrate the camera, it is so easy to shoot color-perfect 4K photo
directly from it!  

Electric Thermos With Manual Timer Switch

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