Substrate Material: |
Mylar, Polyester; High optical transmission compatible to optical glass |
Refractive Index: |
1.640-1.670nm (wavelength band of 250-2500nm) |
Melting Point: |
254 deg C |
Thickness: |
200um,+/-10um |
Out Dimension: |
Square 25.0x25.0, +/-0.2mm; Cuttable and shaping to circular disc e.g. DIA25.0mm or less |
Pattern Mode: |
Single surface patterned; Concentric and symmetric design |
Pattern Design: |
11 concentric circles with cross reticle
Circle 1 ~ 10: center-line diameter =1.000mm ~10.000mm (+/-0.003mm); line thickness: 0.200mm
Circle 11: center-line diameter =20.000mm (+/-0.003mm); linewidth: 0.200mm |
Reticle Line: |
Cross line, with line width 0.200mm |
Pattern Tolerance: |
Within +/-3um |
Coating: |
Emulsion black |
Surface Quality: |
60-40 scratch and dig (Ra within 38nm scanned by profilometer) |
Substrate Unifromity: |
within 2um |
Surface Protection: |
Both surfaces come protection layers; Peel off these 2 layers before use |
Application: |
Able to directly glue onto glass or metal surfaces(polished or ground) to work as target, per customer's jig dimensions. Low cost and flexible in use. |