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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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Product Features:


· High relative illumination and high contrast
· Low distortion and excellent corner brightness

· High resolution

· Compatible with 4/3" 45MP camera


Product information: Custom designs are available upon request.

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Product Features:


· Covering a wide working distance range

· Very low distortion and high resolution

· Lockable distance and aperture settings


Product information: Custom designs are available upon request.


Custom Truncated Doublet and Singlet Lenses
Custom Truncated Doublet and Singlet Lenses

Custom Truncated Doublet and Singlet Lenses from UNI Optics


We offer an extensive custom truncated doublet lens service. With our 30 year heritage of experience in the industry means we can always find the right product and specification for you, whether you require exotic materials, or exceptionally tight tolerances, we are confident in our ability to supply to your complete satisfaction. The table below is a brief overview of our doublet lens  and is not an exhaustive list. If your individual requirements are not met, then please contact our technical sales team who will be happy to advise.es and is n’t an exhaustive list. If your individual requirements are not met, then please contact our technical sales team who will be happy to advise.


Typical Specifications:


Typical materials: Flint (N/F2) and Crown (BK7)
                             Flint (SF6) and Crown (N-LAK22)
                             UV & IR materials on request
Diameter: 3mm to 200mm+
Focal length: 3mm to 1000mm+
Centration: < 3 arcseconds
Surface figure: < 0.1 fringe
Surface quality: < 10/5 Scratch/dig
Coating options: Single layer and BBAR coatings for UV/VIS/NIR with R.avg.<0.25%

More information on the achievable specifications for your individual application can be found by contacting our technical sales team. 

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