|
Both mineral (glass) and hard resin lenses are conformed to the following standards -- ISO8980-1 -1996, ISO14889-2003, GB10810-1996; hard resin lenses are also in conformity with QB2506-2001 standard. Warranty time is one year.
Material & Surface Shortcomings Each lens is divided into 3 zones as shown in the Carl Zeiss Master Plate.
|
Lens Diameter |
Zone A |
Zone B |
ZoneC |
|
55mm |
30.0mm |
9.5mm |
3.0mm |
|
60mm |
30.0mm |
12.0mm |
3.0mm |
|
65mm |
35.0mm |
12.0mm |
3.0mm |
|
70mm |
40.0mm |
12.0mm |
3.0mm |
|
72mm |
45.0mm |
10.5mm |
3.0mm |
Cosmetic inspection is to be made by experienced inspectors based on Carl Zeiss Master Plate. The following table is only a recommendation to the inspectors since cosmetic inspection is totally subjective.
|
|
1st Quality |
2nd Quality |
| Scratch |
Zone A |
If width =? 0.10mm, length =? 2.00mm, 1 allowed. |
If width =? 0.30mm, length =? 5.00mm, 2 allowed, but not centralized. |
| Zone B |
If width =? 0.15mm, length =? 2.00mm, 1 allowed. |
If width =? 0.30mm, length =? 7.00mm, 3 allowed, but not centralized. |
| Zone C |
If width =? 0.25mm, length =? 5.00mm, 2 allowed, but not centralized. |
If widths =? 0.30mm, length =? 10.00mm, 3 allowed, but not centralized. |
| Dots |
Zone A |
Not allowed. |
If diameter =? 0.20mm, 2 allowed, but not centralized. |
| Zone B |
If diameter =? 0.25mm, 1 allowed. |
If diameter =? 0.30mm, 3 allowed, but not centralized. |
| Zone C |
If diameter =? 0.25mm, 2 allowed, but not centralized. |
If diameter =? 0.50mm, 3 allowed, but not centralized. |
| Bubbles |
Zone A |
Not allowed. |
Not allowed. |
| Zone B |
Not allowed. |
If diameter =? 0.50mm, 1 allowed. |
| Zone C |
If diameter =? 0.50mm, 1 allowed. |
If diameter =? 0.50mm, 1 allowed. |
| Inclusions |
Zone A |
Not allowed. |
Not allowed. |
| Zone B |
Not allowed. |
If diameter =? 0.50mm, 1 allowed. |
| Zone C |
If diameter =? 0.25mm, 1 allowed. |
If diameter =? 2.00mm, 1 allowed. |
| Chips |
Zone A |
Not allowed. |
Not allowed. |
| Zone B |
Not allowed. |
Not allowed. |
| Zone C |
If width =? 0.50mm, length =? 2.00mm, 1 allowed. |
If widths =?1.00mm, length =? 3.00mm, 2 allowed, but not centralized. |
Random check to be made referring to ISO2859, ISO3951 and GB2828 standards, parameters for the sampling are Level 2, AQL 4.0.
|
Lot Size (Pieces) |
Sample Size (Pieces) |
Max. Rejection (Pieces) |
|
90-150 |
20 |
2 |
|
151 -280 |
32 |
3 |
|
281 -500 |
50 |
5 |
|
501 -1,200 |
80 |
7 |
|
1,201 -3,200 |
125 |
10 |
|
3,201 -10,000 |
200 |
14 |
|
10,001 -35,000 |
315 |
21 | |
Quality Control 
