https://hk.finance.appledaily.com/finan ... 6/57378551降Face ID質素換產量?蘋果罕有澄清:無咁嘅事!蘋果罕有地公開對個別傳媒報道作出澄清!在接受iPhone X預訂前,蘋果公開澄清有關公司就為配合生產而在面部識別功能上作出妥協的報道。並指「質素及準確度並沒有改變,仍然保持只有百萬分一機會有其他人以面部識別可開啟你的iPhone。」
蘋果更進一步指明,有關《彭博》就公司降低面部識別的準確度以遷就生產的報道完全不正確,我們預期新面部識別功能將會是黃金水平。
彭博早前引述消息人士報道,蘋果要求生產商降低面部識別質量水平以提高產量。
https://medium.com/bloomberg/inside-app ... da6650db4b... The 3-D sensor has three key elements: a dot projector, flood illuminator and infrared camera. The flood illuminator beams infrared light, which the camera uses to establish the presence of a face. The projector then flashes 30,000 dots onto the face which the phone uses to decide whether to unlock the home screen. The system uses a two-stage process because the dot projector makes big computational demands and would rapidly drain the battery if activated as frequently as the flood illuminator.
The dot projector is at the heart of Apple’s production problems. In September, the Wall Street Journal reported that Apple was having trouble producing the modules that combine to make the dot projector, causing shortages.
The dot projector uses something called a vertical cavity surface-emitting laser, or VCSEL. The laser beams light through a lens known as a wafer-level optic, which focuses it into the 30,000 points of infra-red light projected onto the user’s face.
The laser is made of gallium arsenide, a semiconductor material, and the lens is constructed of glass; both are fragile and easily broken.
Precision is key. If the microscopic components are off by even several microns, a fraction of a hair’s breadth, the technology might not work properly, according to people with knowledge of the situation.
To make matters worse, Apple lost one of its laser suppliers early on. Finisar Corp. failed to meet Apple’s specifications in time for the start of production, and now the Sunnyvale, California-based company is racing to meet the standards by the end of October. That left Apple reliant on fewer laser suppliers: Lumentum Holdings Inc. and II-VI Inc.
The fragility of the components created problems for LG Innotek Co. and Sharp Corp., both of which struggled to combine the laser and lens to make dot projectors. At one point only about 20 percent of the dot projectors the two companies produced were usable, according to a person familiar with the manufacturing process. LG Innotek and Sharp slowed the production process down in an effort to prevent breakages and ensure the components were assembled with the required level of precision.