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Dichroic Filter

Hyperion Optics is a premium full-service photonics supplier. Hyp designcapabilities can meet the unique requirements of various customers.

Hyperion Optics’s complete range of cost effective dichroic filter range offers superior transmission, reflection and absorption characteristics.

Key Features:

Sharp transition from reflection to transmission

High transmission in pass band

Hard coatings and no adhesives for long filter life span

All dielectric coated with IBS technology

Factory Standard – Contact us for manufacturing limit or custom specifications

Angle of Incidence: 45.0°

Shortpass Type Transmittance: Tabs>85%

Dimensions: 25.2mm*35.6mm*1.1 mm

Clear Aperture: >95%

Operating Temperature: -45°C ~ 85°C

Physical Durability: MIL-C-48497A

Longpass Type Transmittance: Tabs>90%

Reflection Band: Rabs>98%

Thickness Tolerance: ±0.1 mm

Transmitted Wavefront: 1/4λRMS@633nm (per inch)

Environmental Durability: MIL-STD-810F

Substrate: UV Grade Fused Silica

Dichroic optical filtersconsist of thin film dielectric coatings on glass and exhibit sharp transitions between transmitted and reflected wavelengths. Dichroic filters are similar to traditional interference filters but differentiate themselves by reflecting all unwanted wavelengths. Consequently our dichroic range also offers minimal absorbance characteristics.

Our dichroic filters are available in longpass, shortpass, bandpass, bandblocking and colour correction types over a range of wavelengths. Dichroic shortpass and longpass filters can also act as hot and cold mirrors respectively.

The Dichroic Filtercan divide natural light from a certain wavelength into two parts, one of which passes through, and the other is reflected or absorbed. Filters that allow longer wavelengths of light to pass through are referred to as long wave pass filters, and filters that allow shorter wavelengths of light to pass through are referred to as short wave pass filters.

The desired spectral range can be achieved by using different dichroic filters.

DichroicLongpassFilters

Cut-OnWavelength

TransmissionWavelength

ReflectionWavelength

WavelengthRange(nm)

WavefrontTolerance

Material

Diameter

400

420-1600

350-375

350-1600

1/4λ

FusedSilica

25

450

470-1600

350-430

350-1600

1/4λ

FusedSilica

25

500

520-1600

350-480

350-1600

1/4λ

FusedSilica

25

550

575-1600

415-515

415-1600

1/4λ

FusedSilica

25

600

625-1600

460-570

460-1600

1/4λ

FusedSilica

25

650

675-1600

495-610

495-1600

1/4λ

FusedSilica

25

700

725-1600

535-600

535-1600

1/4λ

FusedSilica

25

750

780-1600

565-715

565-1600

1/4λ

FusedSilica

25

800

830-1600

600-760

600-1600

1/4λ

FusedSilica

25

850

880-1600

635-805

635-1600

1/4λ

FusedSilica

25

900

935-1600

675-855

675-1600

1/4λ

FusedSilica

25

Dichroic Shortpass Filters

DichroicShortpassFilters

Cut-OffWavelength

TransmissionWavelength

ReflectionWavelength

WavelengthRange(nm)

WavefrontTolerance

Material

Diameter

400

325-385

420-485

325-485

1/4λ

FusedSilica

25

450

325-430

470-545

325-545

1/4λ

FusedSilica

25

500

325-480

520-610

325-610

1/4λ

FusedSilica

25

550

400-530

575-725

400-725

1/4λ

FusedSilica

25

600

400-580

625-795

400-795

1/4λ

FusedSilica

25

650

400-630

675-850

400-850

1/4λ

FusedSilica

25

700

400-680

725-990

400-990

1/4λ

FusedSilica

25

750

400-725

800-990

400-990

1/4λ

FusedSilica

25

800

400-775

850-1050

400-1050

1/4λ

FusedSilica

25

850

880-1600

635-805

635-1600

1/4λ

FusedSilica

25

900

400-820

910-1110

400-1110

1/4λ

FusedSilica

25



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