Doctor: LED display night glare has some damage to the cornea
Doctor >>
LED display night light has some damage to the cornea
So, what kind of impact does the glare from the LED display have on drivers, pedestrians or nearby residents? In an interview, an ophthalmologist who asked not to be named said that everyone is not sensitive to light. Therefore, the light on the LED display screen is different, but the strong light at night may cause damage to the cornea, which may cause feelings of fear of light, tears, and tingling. At the same time, the expert also said that light pollution can also interfere with the brain's central nervous system, leading to neurasthenia, dizziness, insomnia, physical weakness, etc., and cause vision loss, the incidence of cataract caused by light pollution is as high as 45% If you are exposed to ultraviolet light from these strong light for a long time, it will induce an increase in blood pressure and even cause other diseases.
1.ANTENK Card Edge Connectors are precision engineered PCB mount connectors developed to mate with the plated fingers of a printed circuit daughter board. Their bifurcated, cantilever contacts are set in a dual readout configuration and they offer a reliable connection for a wide range of PCB thicknesses. ANTENK`s sturdy solder tails with tapers allow easy insertion and rugged durability
Card Slot Connectors Specification:
*Electrical Characteristitics:
Current Rating;0.5A.
Withstanding Voltage:AC500V r.m.s.
Insulation Resistance:1000Megohms Minimum at DC 500V
Contact Resistance:100Miliohms Maximum.
*Mechanical Characteristics:
Mating Cyeles:5000 Insertions.
*Environmwntal:
Operating Temperture:-40°To+60°
*Material:
1.Housing:HI-Temp plastic UL 94V-0 Rated.
2.Contact:Copper Alloy.
3.Shell:SUS.
*Finish :
1u" Gold plated on conatct area,1u" Gold plated on
solder tails, Base Nickel :50u"Min
*Packing:
Number of connectors:750Pcs/REEL
MATERIAL&FINISH
Insulator:PBT Glass Fiber(UL94V-0)
contact:Brass
Contact:Gold-Plated Over Nickel
SPECIFICATIONS
Current Rating:1A AC,DC
Voltage Rating:250V AC,DC
Temperature Range:-40℃ To+105℃
Contact Resistance:20mΩMin
Insulation Resistance:1000MΩ Min
Withstanding Voltage:500V AC/Min
Type of Card Slot Connectors
CF Card Connector
Edge Card Connector
Memory Card Connector
PC Card Connector
SIM Card Connector
Smart Card Connector
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