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Dark adaptation refers to the ability of the human eye to adapt when the environment changes from light to dark. Drivers of various motor vehicles must have good night vision and rapid dark adaptation. The quality of the driver's night vision and dark-adaptive ability directly affects the safety of drivers and passengers.
Instrument Features
1. The instrument integrates light, machine, electricity and calculation. It is a new type of intelligent instrument. It is controlled by computer chips and has high reliability;
2. TV monitoring, comfortable and convenient; man-machine dialogue, easy to operate;
3. Liquid crystal display, automatic judgment, sound and light signal, intuitive and convenient, inspection results, fast and objective; especially suitable for inspection of large-scale groups;
4. The structure is reasonable and easy to use; it can be inspected in a general inspection room without absolute dark room;
The main technical parameters
1. Visual distance: ~300mm 2. Brightness adaptation: ~640cd\m2
3. Brightness of dark target: ~0.0064 cd\m2 4. Direction of target up, down, left, right
5. Color light: red, yellow, green 6. Input voltage: 220v \ 50hz
7. Dimensions: large 49*49*50cm 8. Instrument weight: large ~13kg; small ~5kg;
Small 24*24*40cm
AS Series Instruments Function List
| serial number | Features | AS-1atype | AS-1btype | AS-3 type (small) |
|
1 |
fast dark adaptation |
* |
* |
* |
|
2 |
Glare Recovery |
* |
* |
* |
|
3 |
TV surveillance |
* |
* |
|
|
4 |
optotype selection |
* |
* |
* |
|
5 |
automatic / manual |
* |
* |
* |
|
6 |
Color discrimination |
* |
|
|
|
7 |
Appearance |
1# |
2# |
3# |
|
8 |
Use features | fast dark adaptation | ||
|
9 |
Be applicable | Seafarer medical examination | ||
Note: This series is especially suitable for special inspection "dark adaptation" (such as physical examination of various motor vehicle drivers, seamen, special operators)
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