Коптильня с древесным углем для сада и керамики оптовая продажа садовый гриль
132,00 $ - 150,00 $
Оптическое оборудование с ЖК дисплеем и светодиодной подсветкой
- Категория: >>>
- Поставщик: Shenzhen Holya Vision Optical Industrial Co. Ltd.
Сохранить в закладки 1600304821569:
Описание и отзывы
Характеристики
Specification
LCD Vision Chart Optical equipment Near Vision Chart with LED light
An eye chart is a chart used to measure visual acuity.
Eye charts are often used by health care professionals, such as physicians or nurses, to screen persons for vision impairment.
Ophthalmologists, physicians who specialize in the eye, also use eye charts to monitor the visual acuity of their patients in response to various therapies such as medications or surgery.
The eye test chart is placed at a standardized distance away from the person whose vision is being tested.
The person then attempts to identify the symbols on the chart, starting with the larger symbols and continuing with progressively
smaller symbols until the person cannot identify the symbols.
The smallest symbols that can be reliably identified is considered the person's visual acuity.
The Snellen chart is the most widely used. Alternative types of eye charts include the logMAR chart, Landolt C, E chart, Lea test, Golovin–Sivtsev table, the Rosenbaum chart, and the Jaeger chart snellen chart.
Eye charts are often used by health care professionals, such as physicians or nurses, to screen persons for vision impairment.
Ophthalmologists, physicians who specialize in the eye, also use eye charts to monitor the visual acuity of their patients in response to various therapies such as medications or surgery.
The eye test chart is placed at a standardized distance away from the person whose vision is being tested.
The person then attempts to identify the symbols on the chart, starting with the larger symbols and continuing with progressively
smaller symbols until the person cannot identify the symbols.
The smallest symbols that can be reliably identified is considered the person's visual acuity.
The Snellen chart is the most widely used. Alternative types of eye charts include the logMAR chart, Landolt C, E chart, Lea test, Golovin–Sivtsev table, the Rosenbaum chart, and the Jaeger chart snellen chart.
Product Description
1 | LED screen size :21 |
5 " | |
2 | Pixel pitch:0 |
24825mm | |
3 | Max brightness:250cd/m² |
4 | Max contrast ratio:1000:1 |
5 | Mas resolution:1920*1080 |
6 | Input signal:RGB |
7 | Signal Joint:15 PIN D Pattern Plug |
8 | Energy consumption:17W |
9 | Net weight :3 |
92KG,All weight:5KG | |
10 | Compatibility:PC/MAC |
11 | Dimesion 150(D)*540(W)*385(H)mm |
12 | Screen power :AC 100V~240V 50/60Hz |
Company Profile
Company information
Shenzhen Holya Vision Optical Industrial Co., Ltd Founded in 2015， is one of the most professional manufacturers and trader of
optical optometery and ophthalmic equipments provide all kinds of products(like: Slit Lamp, tonometer, Retina Camera, Funduscamera & FFA, Ultrasound A scan, AB scan, Pachymeter, Biometer & Pachymeter, Auto refractometer, Auto Ker-Refractometer, AutoLensmeter, Auto Phoropter (view tester), Chart Monitor, Near Vision Tester, to cover the entire visual industry , we Located inShenzhen city visual health eye filling equipment operation training, training agents around the world ahead of visual field, help to promote industrial upgrade and healthy development of the global vision Better vision, better love!!
optical optometery and ophthalmic equipments provide all kinds of products(like: Slit Lamp, tonometer, Retina Camera, Funduscamera & FFA, Ultrasound A scan, AB scan, Pachymeter, Biometer & Pachymeter, Auto refractometer, Auto Ker-Refractometer, AutoLensmeter, Auto Phoropter (view tester), Chart Monitor, Near Vision Tester, to cover the entire visual industry , we Located inShenzhen city visual health eye filling equipment operation training, training agents around the world ahead of visual field, help to promote industrial upgrade and healthy development of the global vision Better vision, better love!!
FAQ
1. How do you ensure your products quality?
Production or inspection report before the goods packing. And we got CE, ISO certification.
2. What about your after-sale service?
We have a professional team for after-sale service. Our team will follow the order once you ordered.
3. What is your warranty policy?
1-2years due to different products and lifetime maintaining.
Customer Service:
Should you have any questions,please feel free to contact us.
- Our customer service team will serve you 7 days a week except pubic holidays.
- Due to the time difference between countries,the e-mails might not be answered in time,but we are sure you can get our reply within 24 hours.
Production or inspection report before the goods packing. And we got CE, ISO certification.
2. What about your after-sale service?
We have a professional team for after-sale service. Our team will follow the order once you ordered.
3. What is your warranty policy?
1-2years due to different products and lifetime maintaining.
Customer Service:
Should you have any questions,please feel free to contact us.
- Our customer service team will serve you 7 days a week except pubic holidays.
- Due to the time difference between countries,the e-mails might not be answered in time,but we are sure you can get our reply within 24 hours.
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