Skip to content
You are here: Home arrow Optical Lenses arrow Quality Control
Lens Quality Control Print E-mail

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.

Image

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 Quality2nd Quality
ScratchZone AIf width =‹ 0.10mm, length =‹ 2.00mm, 1 allowed.If width =‹ 0.30mm, length =‹ 5.00mm, 2 allowed, but not centralized.
Zone BIf width =‹ 0.15mm, length =‹ 2.00mm, 1 allowed.If width =‹ 0.30mm, length =‹ 7.00mm, 3 allowed, but not centralized.
Zone CIf width =‹ 0.25mm, length =‹ 5.00mm, 2 allowed, but not centralized.If widths =‹ 0.30mm, length =‹ 10.00mm, 3 allowed, but not centralized.
DotsZone ANot allowed.If diameter =‹ 0.20mm, 2 allowed, but not centralized.
Zone BIf diameter =‹ 0.25mm, 1 allowed.If diameter =‹ 0.30mm, 3 allowed, but not centralized.
Zone CIf diameter =‹ 0.25mm, 2 allowed, but not centralized.If diameter =‹ 0.50mm, 3 allowed, but not centralized.
BubblesZone ANot allowed.Not allowed.
Zone BNot allowed.If diameter =‹ 0.50mm, 1 allowed.
Zone CIf diameter =‹ 0.50mm, 1 allowed.If diameter =‹ 0.50mm, 1 allowed.
InclusionsZone ANot allowed.Not allowed.
Zone BNot allowed.If diameter =‹ 0.50mm, 1 allowed.
Zone CIf diameter =‹ 0.25mm, 1 allowed.If diameter =‹ 2.00mm, 1 allowed.
ChipsZone ANot allowed.Not allowed.
Zone BNot allowed.Not allowed.
Zone CIf 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
 
< Prev   Next >
[ Back ]