EEVblog | EEVblog 1554 - Optometrist AutoRefractor Keratometer TEARDOWN! @EEVblog | Uploaded 1 year ago | Updated 1 hour ago
A teardown of a very interesting bit of optometry kit, a Shin Nippon NVISION K-5001 RefKeratometer (Auto Refractor Keratometer).
It can measure the curvature of your cornea, and well as refractive error to diagnose near and far sightedness.
Dave's Dodgy Optometry Service: youtube.com/watch?v=cgCFNi8CekE
Links:
rexxam.co.jp/themes/eye-care/products/images/nvk5001/NvisionK5001.pdf
https://www.academia.edu/59315264/Clinical_Evaluation_of_the_Shin_Nippon_NVision_K_5001_Grand_Seiko_WR_5100K_Autorefractor
opticsforhire.com/blog/keratometer-optical-design
Manual: yumpu.com/en/document/read/25018677/english-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 manual...
11:22 - How the Keratometer mire circle is generated
13:42 - Optical path and lenses
15:47 - The camera
16:53 - Fine auto-focus mechanism
18:22 - Main PCB
Forum: eevblog.com/forum/blog/eevblog-1554-optometrist-autorefractor-keratometer-teardown!
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A teardown of a very interesting bit of optometry kit, a Shin Nippon NVISION K-5001 RefKeratometer (Auto Refractor Keratometer).
It can measure the curvature of your cornea, and well as refractive error to diagnose near and far sightedness.
Dave's Dodgy Optometry Service: youtube.com/watch?v=cgCFNi8CekE
Links:
rexxam.co.jp/themes/eye-care/products/images/nvk5001/NvisionK5001.pdf
https://www.academia.edu/59315264/Clinical_Evaluation_of_the_Shin_Nippon_NVision_K_5001_Grand_Seiko_WR_5100K_Autorefractor
opticsforhire.com/blog/keratometer-optical-design
Manual: yumpu.com/en/document/read/25018677/english-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 manual...
11:22 - How the Keratometer mire circle is generated
13:42 - Optical path and lenses
15:47 - The camera
16:53 - Fine auto-focus mechanism
18:22 - Main PCB
Forum: eevblog.com/forum/blog/eevblog-1554-optometrist-autorefractor-keratometer-teardown!
If you find my videos useful you may consider supporting the EEVblog on Patreon: http://www.patreon.com/eevblog
Or with crypto:
BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM
ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c
BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4
USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c
LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF
Web Site: http://www.eevblog.com
Other channels:
EEVblog2: http://www.youtube.com/EEVblog2
EEVdiscover: youtube.com/eevdiscover
T-Shirts: http://teespring.com/stores/eevblog
#ElectronicsCreators
