We offer a full range of innovative products, As a supplier and representatives of many world's best manufacturers of precision optics, we meet the needs of consumers in the area of defense, commercial, space etc.,
Interference filters
We supply custom made optical filters, made to perform different functions; Filters in any shape can be specifically designed for any wavelength selection, and any width of pass band, transmittance, color matching, angle of incidence etc.
Our company is capable of delivering, among others:
- Band passes Filter
- Long pass Filter
- Short pass Filter
- Neutral Density Filter – Absorptive of Reflective
Band pass filters
We offer band pass filter with broad blocking and/or an optimized transmittance region. Large blocking and low wave front distortion can be optimized to meet customer demands. .
- Available in UV, Visible, and IR Center Wavelengths(Standard available CWL range: 400nm-2000nm)
- Excellent temperature stability
- Available in Standard 25.4 mm diameter and 50.8 mm square sizes and also customized sizes as per customer requirement
- Superior lifetime in harsh environmental conditions
Long Pass filters
Long-wave pass edge filters are specifically designed to transmit longer wavelengths than the cut-on wavelength while rejecting shorter wavelengths using either absorption or reflection. We offer several types of long-pass filters as well as long pass filter sets
Our supply range also includes Schott long pass filter with the following standard specifications
| Specifications – Standard | |
|---|---|
| Material: | Schott ® Filter Glass |
| Dimensions: | Ø +0.00/-0.20mm Squares +/-0.20mm |
| Thickness Tolerance: | ± 0.10mm |
| Edges: | Fine Ground |
| Flatness: |
|
| Surface quality: | 60/40 |
| Parallelism: | ≤ 3 arc mins |
| Custom Made Sizes | |
|---|---|
| Dimensions: | Squares/Rectangles 1mm x 1mm to 165mm x 165mm |
| Diameters: | 5mm to 160mm |
| Thickness: | 0.50mm to 6.00mm (subject to dimension) |
Shortpass Filters
Short-wave pass edge filters are specifically designed to transmit wavelengths shorter than the cut-off wavelength while rejecting longer wavelengths. We offer standard dielectric coated short pass filters, higher performance dichroic filters and short-pass filter sets.
- Steep cut-off transition slope
- High rejection stop band
- ≥65% transmission short pass band
- Cut-off wavelengths from 400-1000 nm
- Blocked to 1200 nm
Our supply range of Schott short pass filter comes with the following standard specifications
| Specifications – Standard | |
|---|---|
| Material: | Schott ® Filter Glass |
| Dimensions: | Ø +0.00/-0.20mm Squares +/-0.20mm |
| Thickness Tolerance: | ± 0.10mm |
| Edges: | Fine Ground |
| Flatness: |
|
| Surface quality: | 60/40 |
| Parallelism: | ≤ 3 arc mins |
| Custom Made Sizes | |
|---|---|
| Dimensions: | Squares/Rectangles 1mm x 1mm to 165mm x 165mm |
| Diameters: | 5mm to 160mm |
| Thickness: | 0.50mm to 6.00mm |
Neutral Density Filters
A Neutral-Density filter (ND filter) reduces the intensity of a wide spectrum of light equally. We offer standard ND filters including Absorptive glass ND filters and reflective metallic ND filters, for the visible/NIR and UV transmitting on glass or fused-silica,
Absorptive Neutral Density Filters
Absorptive Schott glass ND filters are used to control the intensity of light and are stackable without resulting in multiple reflections. The ND glass absorbs the light within the filter. Each glass type is polished to required thickness and measured to produce the exact optical density and transmission. Custom or standard optical densities and transmission can be produced to a particular wavelength.
Our standard stocks of Schott or Hoya ND Absorptive Filters are of the following specifications
| Material: | SCHOTT ® or HOYA® filter | SCHOTT ® or HOYA® filter | SCHOTT ® or HOYA® filter |
|---|---|---|---|
| Dimension tolerance: | Ø 12.5mm +0.00/-0.20mm | Ø 25mm +0.00/-0.20mm | 50x50mm +/-0.20mm |
| Thickness tolerance: | ± 0.10mm | ± 0.10mm | ± 0.10mm |
| Edges: | Fine ground | Fine ground | Fine ground |
|---|---|---|---|
| Surface quality: | 60/40 | 60/40 | 60/40 |
| Flatness: | ≤ 3 fringes | ≤ 5 fringes | ≤ 8 fringes |
| Optical density: |
|
|
|
| Parallelism: | ≤ 3 arc mins | ≤ 5 arc mins | ≤ 8 arc mins |
CUSTOM MADE SIZES
| Dimensions: | Squares/Rectangles 1mm x 1mm to 165mm x 165mm , |
|---|---|
| Diameters 5mm to 160mm | |
| Tdickness: | 0.50mm to 4.00mm (subject to dimension) |
| Surfaces: | 80/50 to 20/10 |
| Parallelism: | up to 1 min |
| Transmission: | to 2% |
| Absorbance: | to 0.02mm |
| Density: | To 0.02 |
| Custom densities & transmission at different wavelengths eg. 71% | T @ 589nm |
Reflective Neutral Density Filters
Reflective coated metallic ND filters are coated in two glass types. The visible IR range is ND coated on optical glass to cover 350nm to 2500nm. The UV range is coated on fused silica for use down to 170nm. Please be aware the densities are coated for 550nm, but in the UV this will give up to 40% higher density.
| Specifications – Standard | |
|---|---|
| Material: | Optical Glass |
| Dimensions: |
|
| Thickness: | 2mm ± 0.20mm |
| Edges: | Fine Ground |
| Surfaces: | 80/50 |
| Coating: | Metallic |
| Spectral Range: | 350nm-2500nm |
| Optical Density: | ± 5% @ 550nm |
| Custom Sizes | |
|---|---|
| Diameters: | 5mm to 300mm |
| Squares/Rectangles: | 1mm to 300mm |
| Thickness: | 0.30mm to 6mm |
**Inquire with us for any of your Filter requirement**