Tunable VCSEL Camera Focus Adjustment Without Resolution Loss

The patent applies preliminary action by capturing multiple images at different focus positions (focus stacking) before final processing. Instead of attempting to refocus a single captured image, the system pre-captures a series of images with varying focus depths, then combines them computationally to achieve both post-capture focus adjustment and high spatial resolution. This resolves the contradiction by performing the focus adjustment action in advance across multiple captures rather than on a single image.

The patent employs dynamics by making the focus position variable and adjustable after capture through computational processing. The system dynamically combines information from multiple images captured at different focus positions, allowing the final image's focus plane to be adjusted flexibly. This dynamic approach enables both focus correction and maintenance of native sensor resolution, overcoming the static limitation of conventional preoptic systems.

The system performs preliminary focus adjustment by capturing multiple images at different focus positions in rapid succession. This preliminary multi-image capture ensures that at least some images are properly focused, and the computational combining process is performed afterward to guarantee image quality. This resolves the contradiction by shifting the focus correction action to the preprocessing stage rather than requiring perfect focus on the first capture.

The patent implements feedback through computational analysis of multiple captured images to determine optimal focus combination. The system evaluates the focus quality of different captured images and uses this feedback information to selectively combine them, ensuring the final output meets quality requirements. This feedback mechanism maintains both capture speed and image quality by automatically adjusting the combination process based on actual capture results.