product origin:
Chinashipping port:
Fuzhou Chinalead time:
4 working weekspayment:
T/T Payment, Western UnionUNI 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 |
Fused Silica IPL Filter for Hair Removal
Machine Vision Bandpass Filters
A band pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range, and it’s used to selectively transmit a portion of the spectrum while rejecting all other wavelengths.
Longpass Filters for Vision inspection Apllication
Longpass filters are ideal for a variety of applications, such as gas monitoring, temperature, sensing, thermal imaging and motion sensing, etc. Longpass filters block shorter wavelengths and transmit longer wavelengths. Blocking can be from reflectance, absorption or a combination. Transmission in the pass band can be enhanced with an antireflection coating on the second surface.
Optical glass neutral density filters
A Neutral Density filter allows a photographer to control the exposure in an image very easily. The filter stops light reaching the camera sensor, therefore allowing us to leave the camera with a higher aperture for a longer amount of time.
UN-TFA1220L-10MP
Product Features:
· High image contrast
· High brightness uniformity
· Suitable for 2.4u sensor
· Resolution up to 10MP
· Compact, lightweight and durable
Product information: Custom designs are available upon request.
Magnesium Fluoride (MgF2) Windows
Magnesium Fluoride Windows applicable for wide range spectrum, transmits well into the VUV region at the hydrogen Lyman-alpha line and beyond and it is particularly useful for Excimer laser application.It is resistant to mechanical and thermal shock, to radiation, and is chemically stable.
UN-ALS288K
Product Features:
· Developed for 32mm big frame sensor
· Large Aperture, up to F2.4· Excellent optical performance, uniform imaging of center and edge
Product information: Custom designs are available upon request.
Plano-Concave Circular Cylindrical Lenses
UN-GSWIR5014C
Product Features:
· Developed for 1" image format
· Wavelength: 900-1700nm
· Large Aperture, up to F1.4
· Compact and lightweight design
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Tel : +86-591-86395085
Email : sales@uni-optics.com
