China’s 4.03m Silicon Carbide Mirror: Hubble 3X Better, US Shocked

Added: 2026-05-11

[00:00:00]Welcome to Fantastic Vision.

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[00:00:08]Whether it involves satellites photographing Earth from space, missiles precisely locking onto targets or lithography machines etching chips.

[00:00:19]There is one essential component without which none of these operations would be possible.

[00:00:26]What is this component?

[00:00:28]Many people have likely never heard of it. It is called a silicon carbide mirror.

[00:00:36]Do not underestimate this mirror. It is 10,000 times more critical than China had previously imagined.

[00:00:45]In the past, China faced a truly frustrating predicament in this field.

[00:00:52]The market for small aperture high precision mirrors was monopolized by the Japanese while the core technology for large aperture mirrors remained firmly in American hands.

[00:01:06]Did China want to import?

[00:01:09]They simply slammed the door shut and cut off supplies.

[00:01:14]Did China seek collaboration?

[00:01:17]They wouldn't even let us through the door.

[00:01:21]The veterans of China's optical research community, those pioneers who endured the bitter taste of being strangled from both sides, will likely never forget that experience.

[00:01:35]Fortunately, in April 2026, this awkward impass was finally and decisively broken.

[00:01:44]Major news has emerged from the Chongchan Institute of Optics. Fine mechanics and physics scump Chinese research teams have achieved yet another breakthrough making critical strides in the additive manufacturing of silicon carbide mirrors.

[00:02:04]For those unfamiliar with the technical jargon, simply put, China has successfully boosted the silicon carbide content in these mirrors from less than 50% to an impressive 64.54%.

[00:02:21]Furthermore, they have fabricated a mirror body with a diameter of 220 mm, a surface so incredibly smooth that its roughness measures a mere 0.772 nanome.

[00:02:38]This is equivalent to 100,000th the thickness of a human hair. Compared to this mirror, even ordinary glass, which feels incredibly smooth to the touch, would feel like a washboard.

[00:02:53]Why is this component so difficult to produce?

[00:02:58]Because silicon carbide is an incredibly finicky material.

[00:03:03]Its hardness is second only to that of diamond. Moreover, it is highly heatresistant and resistant to deformationation, making it an indispensable choice for high-end optical manufacturing.

[00:03:18]Whether for the lenses of lithography machines or the core components of missiles and radar systems, this material is absolutely essential.

[00:03:30]In the past, China was forced to import parts for its lithography machines, and the performance of its weaponry and equipment was constrained by a lack of precision. All because the country had not yet mastered the production of this seemingly small mirror.

[00:03:49]This recent breakthrough was not a stroke of luck, but rather the culmination of over two decades of relentless, tenacious effort by the researchers at CIO.

[00:04:02]In the late 1990s, when foreign nations imposed a comprehensive technological blockade, China was forced to start from scratch and grope its way forward.

[00:04:16]In 2009, the team dared to challenge the internationally accepted aperture limit of 1.5 m, setting their sights on fabricating a 4 m mirror, a goal that at the time many dismissed as nothing more than a pipe dream.

[00:04:35]Yet, the team refused to accept defeat.

[00:04:39]Through hundreds of experiments and countless failures, a grueling process spanning nearly a decade, they succeeded in fabricating the world's largest monolithic silicon carbide mirror measuring 4.03 m in diameter.

[00:04:58]Furthermore, they successfully established an entire industrial supply chain and secured full independent intellectual property rights.

[00:05:09]When compared with the United States, China's advantages become even more apparent.

[00:05:16]The primary mirror of the Hubble Space Telescope measures a mere 2.4 m and is incredibly heavy.

[00:05:26]While the James Webb Space Telescope boasts a larger aperture, its mirror is segmented, constructed from multiple pieces, resulting in compromised imaging stability.

[00:05:40]In contrast, China's 4.03 mirror is a single monolithic structure formed in one piece. Its light gathering area is nearly three times that of Hubble and its resolution surpasses Hubble's by a factor of three.

[00:05:59]Today, China possesses the capability to master the production of mirrors across the entire spectrum from large apertures to small ones. A level of expertise that is truly unique on the global stage.

[00:06:16]It is no exaggeration to say that the spectacular debut of China's Eye in the Sky has stunned the world, adding yet another formidable asset to the nation's arsenal of strategic technologies.

[00:06:33]Drawing upon historical experience, China understands with cleareyed sobriety that core technologies can never be purchased. The silicon carbide mirror stands as the quintessential proof of this truth.

[00:06:50]The journey from being stifled by technological bottlenecks to overtaking the United States. From starting with absolutely nothing to becoming the world leader was achieved not through shortcuts, but through the unwavering perseverance and relentless dedication of an entire generation spanning two decades.

[00:07:12]This mirror reflects not only the starlight of the cosmos, but also the indomitable spirit of China's high-end manufacturing sector. A spirit that refuses to yield and serves as the bedrock of confidence, enabling China to break foreign monopolies and stand tall with dignity.

[00:07:33]In the future, this technology will be applied to lithography machines and next generation satellites. Indeed, the path of China's technological advancement will only continue to broaden.

[00:07:48]China achieves a breakthrough in silicon carbide mirror technology, transitioning from being stifled by the US and Japan to becoming a global leader.

[00:08:02]After two decades of unwavering dedication, the Chongchan Institute of Optics, Fine Mechanics, and Physics has successfully produced the world's largest monolithic mirror, a 4.03 m marvel with a resolution three times that of Hubble, thereby fundamentally reshaping the landscape of lithography machines, satellites, and missile systems.