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Neutral Density Filters ZAB Series

Focus on Colored Glass Melting and Optical Filters Manufacturing for Over 30 years'.

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  • Product description
  • Our products neutral density filters ZAB Series are neutral filter glass with balanced blocking in the visible light, they are equivalent to filter glass NG Series of Germany Schott and optical lens ND series of Japan Hoya.

     

    These filters possess level spectral transmittance characteristics in the visible region independent of wavelength. They are ideal for exposure control in color photography, and are also used for light control in other measuring instruments. They are designed to uphold designated performance capabilities through controlling the thickness.

     

    Main Application: Camera Lens, Optical Instruments.

     

     

     

    Type

    Thickness

    A[2856k]

    D65

    Chemical Stability

    ND

    α×10-7
    (℃)

    Tg (℃)

    Ts (℃)

    S

    (mm)

    x

    y

    Y

    x

    y

    Y

    DA

    DW

    ZAB00

    0.5

     

     

     

     

     

     

    5

    3

    1.527

    65

    469

    582

    2.46

    ZAB02

    1

     

     

     

     

     

     

    5

    3

    1.514

    65

    469

    582

    2.41

    ZAB2

    2

    0.447

    0.396

    1.1

    0.306

    0.315

    1

    5

    3

    1.509

    65

    469

    582

    2.43

    ZAB5

    2

     

     

     

     

     

     

    5

    4

    1.505

    65

    469

    582

    2.42

    ZAB10

    2

    0.434

    0.402

    9

    0.297

    0.314

    8.9

    1

    3

    1.526

    65

    469

    582

    2.52

    ZAB25

    2

    0.442

    0.408

    25.7

    0.308

    0.327

    25.4

    5

    3

    1.502

    65

    469

    582

    2.41

    ZAB30

    2

     

     

     

     

     

     

    1

    3

    1.523

    65

    469

    582

    2.52

    ZAB50

    2

    0.444

    0.408

    45.7

    0.31

    0.329

    45

    5

    3

    1.502

    65

    469

    582

    2.41

    ZAB65

    2

     

     

     

     

     

     

    1

    3

    1.521

    65

    469

    582

    2.52

    ZAB70

    2

    0.499

    0.41

    70.2

    0.316

    0.385

    68.7

    5

    3

    1.502

    65

    469

    582

    2.41

     

    Technical Standard of Neutral Density Filters

    Type

    Thickness(mm)

    TP(%)

    QZ(%)

    standard tolerance

    ZAB00

    0.5

    2

    1.0~4.0

    ≤4.0

    ZAB02

    1

    1.5

    0.5~3.0

    ≤3.0

    ZAB2

    2

    2

    1.0~3.0

    ≤3.0

    ZAB5

    2

    5

    1.0~9.0

    ≤5.0

    ZAB10

    2

    10

    6.0~15.0

    ≤5.0

    ZAB25

    2

    25

    18.0~32.0

    ≤6.0

    ZAB30

    2

    30

    23.0~37.0

    ≤10.0

    ZAB50

    2

    50

    41.0~59.0

    ≤8.0

    ZAB65

    2

    65

    58.0~72.0

    ≤6.0

    ZAB70

    2

    70

    63.0~77.0

    ≤7.0

     

    Quality Level of Neutral Density Filters

    Type

    Bubble

    Stripe

    Stress

    ZAB00

    C-B

    4

    3

    ZAB02

    C-B

    4

    3

    ZAB2

    C-B

    4

    3

    ZAB5

    C-B

    4

    3

    ZAB10

    C-B

    4

    3

    ZAB25

    C-B

    4

    3

    ZAB30

    C-B

    4

    3

    ZAB50

    C-B

    3C

    3

    ZAB65

    C-B

    3C

    3

    ZAB70

    C-B

    3C

    3

     

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