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    Optics
    QB NIR Cut-off Filter Glass
    QB NIR Cut-off Filter Glass

      QB NIR cut-off filter glass has strong absorption ability in the near infrared region, which can significantly improve the problems of ghost image, veiling glare and color bias in imaging, and it is widely used in mobile filter (IRCF) and low pass filter (OLPF). The company offers QB NIR cut-off filter glass such as QB5 series, QB6 series and QB7 series, which can meet different infrared suppression requirements.

      The company provides filters with different specifications for IRCF and OLPF. The main dimensions of OLPF are 41mm×37mm×0.8mm, 28mm×22mm×0.4mm, 16.8mm×12.7mm×0.3mm. The main dimensions of IRCF are 77mm×77mm×0.21mm, 55mm×42mm×0.145mm, and it can be customized according to customer requirements. 


    Blue glass light splitting with 50% wavelengths

    Material system

    Material

    Item

    Thickness   splitting relationship before coating Spectral Line Half-width after coating = The   following value +5 or 6

    Fluorophosphate   glass
     
    Visible light enhancement

    QB50A

    Thickness mm

    0.5

    0.54

    0.56

    0.59

    0.6

    0.65

    0.7

    0.73

    0.76

    0.8

    0.85

    0.9

    0.95

    1

    1.1

    50% splits nm

    655

    651

    649

    645

    644

    641

    637

    635

    633

    631

    628

    625

    623

    620

    617

    QB52

    Thickness mm

    0.3

    0.4

    0.45

    0.5

    0.54

    0.56

    0.59

    0.6

    0.65

    0.7

    0.75

    0.8

    0.85

    0.9

    0.95

    50% splits nm

    658

    642

    636

    631

    627

    625

    623

    622

    619

    615

    612

    610

    607

    605

    603

    QB53

    Thickness mm

    0.2

    0.21

    0.25

    0.27

    0.3

    0.32

    0.35

    0.4

    0.45

    0.5

    0.55

    0.6

    0.65

    0.7

    0.75

    50% splits nm

    669

    666

    655

    650

    644

    641

    636

    629

    624

    619

    615

    611

    608

    605

    603

    QB54

    Thickness mm

    0.19

    0.2

    0.21

    0.23

    0.25

    0.28

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.59

    0.6

    50% splits nm

    658

    655

    652

    647

    642

    636

    633

    629

    625

    622

    619

    617

    614

    602

    601

    QB55

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.22

    0.23

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.47

    50% splits nm

    653

    649

    646

    644

    641

    638

    636

    623

    620

    617

    614

    611

    609

    606

    604

    QB56

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.22

    0.23

    0.27

    0.3

    0.32

    0.35

    0.37

    0.4

    0.45

    0.5

    50% splits nm

    645

    642

    638

    636

    634

    631

    629

    621

    617

    614

    610

    608

    605

    600

    596

    QB58

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.25

    0.27

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.47

    50% splits nm

    633

    630

    627

    625

    623

    615

    612

    608

    605

    602

    600

    597

    595

    593

    591

    Fluorophosphate   glass
     
    Infrared suppression enhancement

    QB62

    Thickness mm

    0.3

    0.4

    0.45

    0.5

    0.54

    0.56

    0.59

    0.6

    0.65

    0.7

    0.75

    0.8

    0.85

    0.9

    0.95

    50% splits nm

    658

    642

    636

    631

    627

    625

    623

    622

    619

    615

    612

    610

    607

    605

    603

    QB63

    Thickness mm

    0.2

    0.21

    0.25

    0.27

    0.3

    0.32

    0.35

    0.4

    0.45

    0.5

    0.55

    0.6

    0.65

    0.7

    0.75

    50% splits nm

    667

    665

    654

    649

    644

    641

    636

    629

    624

    619

    615

    611

    609

    606

    604

    QB64

    Thickness mm

    0.19

    0.2

    0.21

    0.23

    0.25

    0.28

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.59

    0.6

    50% splits nm

    656

    653

    651

    546

    641

    635

    632

    629

    625

    622

    619

    617

    614

    603

    602

    QB65

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.22

    0.23

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.47

    50% splits nm

    652

    648

    645

    644

    641

    638

    636

    623

    620

    617

    614

    611

    609

    607

    605

    Phosphate glass
     
    Strength enhancement

    QB75

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.22

    0.23

    0.3

    0.32

    0.35

    0.37

    0.4

    0.42

    0.45

    0.47

    50% splits nm

    654

    650

    647

    644

    641

    638

    635

    622

    619

    616

    613

    610

    608

    605

    603

    QB76

    Thickness mm

    0.17

    0.18

    0.19

    0.2

    0.21

    0.22

    0.23

    0.27

    0.3

    0.32

    0.35

    0.37

    0.4

    0.45

    0.5

    50% splits nm

    646

    643

    639

    636

    634

    631

    628

    620

    618

    615

    609

    607

    604

    599

    595

     

     


    Product pictures
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