EEVblog 1554 Optometrist Auto Refractor Keratometer TEARDOWN

A teardown of a very interesting bit of optometry kit, a Shin Nippon NVISION K5001 RefKeratometer (Auto Refractor Keratometer). It can measure the curvature of your cornea, and well as refractive error to diagnose near and far sightedness. Links: Manual: 00:00 What is an AutoRefractor Keratometer 03:41 Don t try this at home kids Can Dave measure his eyeball 06:17 Teardown 08:14 Pupil distance measurement 09:43 Should have read the 11:22 How the Keratometer mire circle is generated 13:42 Optical path and lenses 15:47 The camera 16:53 Fine autofocus mechanism 18:22 Main PCB Forum: If you find my videos useful you may consider supporting the EEVblog on Patreon: Or with crypto: BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4 USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF Web Site: Other channels: EEVblog2: EEVdiscover: TShirts: , ElectronicsCreators