Broad band filter（900-1600nm）

Filters are made by adding special dyes to a plastic or glass substrate or by evaporating an optical film on the surface to attenuate (absorb) certain bands of light in a wave or by accurately selecting a small band through which to reflect or absorb other unwanted bands. By changing the structure of the filter and the matching parameters of the membrane structure, various spectral characteristics can be obtained, so that the filter can control, adjust and change the transmission and reflection state of light waves. Its advantages are: peak transmittance, flat band spectrum, excellent cutoff in a wide band range, and good wet temperature stability.

Yukang photonics specializes in the production of various high-end narrow-band filters, bandpass filters, infrared ultraviolet filters, dichroic filters, long-wave pass filters, short-wave pass filters, advanced optical coating equipment, mature physical hard film technology, fast delivery cycle, can meet your customized requirements.

Technical characteristics

■ advanced hard film coating technology, vacuum structure layer technology, interference multi-layer coating technology, etc

■ narrow bandwidth; High cut-off depth; Wide cut-off range

■ provide customized size, add metal protection outer ring, special metal outer ring and other customized types

Thickness: 0.55 mm - 6 mm

Chamfering: < 0.2mm

Thickness deviation: +0/-0.1mm

Base material: Fused silica; K7、 K9、 B270;

Dimensional deviation: + 0/0.2 mm (Φ D; LxW) Float glass, etc.

Clear aperture: > 90%

Operating temperature: -40°C /+70°C (low stress state)

Surface quality: 60-40 （MIL）

Storage environment: constant temperature ~23℃; And humidity < 40%

■ The highest filter can be provided, the product parameters are true and reliable

■ With custom gradient band pass filter design r & d production capacity

■ We provide the customized service of zhongyuan infrared filter

■ With a reflectance of 99.99% > dielectric membrane reflector design, the production capacity can be customized up to five bandpass filters

■ Ultra - steep transition zone filters can be customized

■ It has the ability of secondary customization of imported high-end filters

■ Development and production of microarray bandpass filters for CCD

■ It provides contactless laser cutting service for high-end filters