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Selection and Use of Methylcellulose Tablets

Release Date:

2021-06-30 11:15

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Selection and Use of Methylcellulose Tablets

　　Although the light‑blocking spacer and Mylar sheet are tiny components in a CMOS lens, they play a critical role, influencing key optical parameters such as image sharpness, aperture size, and autofocus performance. Many manufacturers regard these parts as insignificant, arbitrarily selecting suppliers and even adopting them without rigorously evaluating the supplier’s quality management system, production capacity, or technical expertise. As a result, optical defects like flare, dark spots, and misalignment frequently occur, leading to the scrapping not just of a small light‑blocking washer, but of the entire finished lens—clearly a case of losing far more than one gains. Today, high‑resolution lenses in devices such as the iPhone, Samsung, and Huawei all utilize premium, original Japanese light‑blocking materials—such as KIMOTO or blackened, matte‑finished stainless steel. To further suppress mechanical stray light like flare, the inner walls of the lens barrel must undergo chamfering and a frosted, matte finish. Additionally, to support advanced lens development, specialized machining is required for ultra‑precise bore finishing and tight control of corner radii. Most crucially, to address the most common quality issue—burrs—it is essential to employ a fully automated 100× magnification imaging inspection and identification system, ensuring that zero defective units leave the production line.

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