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