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High Precision Colored Glass Filters

Colored glass filters are optical components that control incident wavelength by distributing an optical absorbing substance in glass.
  • product origin:

    China
  • shipping port:

    Fuzhou China
  • lead time:

    4 working weeks
  • payment:

    T/T Payment, Western Union
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  • description

UNI Optics’s colour glass filters are manufactured by injecting coloured dye into a glass substrate.

 

1、How do optical filters work?


Optical filters are passive devices that allow the transmission of a specific wavelength or set of wavelengths of light. Absorptive filters have a coating of different organic and inorganic materials that absorb certain wavelengths of light, thus allowing the desired wavelengths to pass through.

 

2、What is the central wavelength of a red filter?


Recall that the visible wavelength ranges are: 430 to 490 nm = blue; 490 to 530 nm = green; 530 to 580 nm = yellow; 580 to 630 nm = orange and 630 to 700 nm = red.



Common specification 

Material: color glass
Bevel:<0.25mm X 45°
Coating: Optional (Uncoated, AR Coating, etc.)

 

Standard

High Precision

Dimension Tolerance

+0.0/-0.2

+0.0/-0.02

Thickness Tolerance

±0.2

±0.05

Surface quality:

60-40

20-10

Clear Aperture

>85%

>95%

Flatness(per 25mm@633nm)

λ /2

λ /8

Parallelism

3 min

10 sec





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