We manufacture high performance optical filters utilized in a wide range of industries and applications. The versatility of our coating processes, shaping and metrology equipment, part marking and packaging offerings enable our ability to offer a wide range of wavelength selection, size, shape & thickness, and surface quality in production optical filter volumes of hundreds to hundreds of thousands per customer annually. Working in partnership with OEM instrument manufacturer's optical engineers and scientists, we design custom thin film optical filters that are optimized for the optical path of the instrument architecture and the analysis to be performed. This team approach enables delivery of the best cost / performance / time-to-market value to each instrument manufacturer. We are eager to discuss your needs today.
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Life and Health Science
Please see Optical Filter Applications for additional information.
Our thin film coating capabilities deliver the full spectrum of solutions for managing light using optical filters and coatings from 250 nm in the ultraviolet to 2100 nm in the near infrared.
We engineer bandpass filters from the simplest to the most complex, over the range of 250 to 2500 nm with bandwidths as narrow as 0.5nm in the UV/VIS to as wide as 200nm in the NIR. Out of band blocking customized to each application from OD > 3 to OD > 8. See Specifying Bandpass Filters for additional information.
Our custom designed bandpass filters are designed for OEM applications such as microplate readers for quantification of biological and chemical assays, analytical instrumentation for diagnostics, colorimeters for color process control, environmental monitoring for water, gas and air, among many others.
Dichroic filters separate a broad spectrum of light into two components: a reflected component and a transmitted component typically splitting the light at a 45º angle of incidence.
Our custom dichroic filters are designed for OEM instrumentation such as fluorescence microscopy, germicidal monitors, endoscopes, cytometers, and many more.
Edge filters are designed to block shorter wavelengths while passing longer wavelengths, or conversely passing shorter wavelengths while blocking longer wavelengths as required to enable the system measurement.
Our custom edge filters are designed for OEM instrumentation in applications ranging from agricultural automation to medical diagnostics.
Our custom Neutral density (ND) filters are used to attenuate the intensity of a light beam over a narrow or a broad range of wavelengths. ND filters can be provided as either absorptive filters that are fabricated of colored glass best suited for 400 to 700 nm, or as reflective-absorptive glass filters (also referred to as metallic) covering 250 to 1200 nm manufactured with thin-films.
Our custom Colored-Glass Alternative filters were originally developed for OEM applications either as alternatives to a non-RoHS compliant Colored-Glass filter, as replacements of a Colored-Glass filter that had been discontinued, or as a new product to fill a gap in the wavelength offering of the major Colored-Glass filter manufacturers.
Our custom fluorescence filters are designed for OEM instrumentation such as DNA Analyzers, Flow Cytometers, PCR Thermocyclers, Microplate Readers, and many more. Working in partnership with the instrument manufacturer's optical engineers and biotech scientists, we design custom excitation and emission bandpass filters, and the dichroic filters optimized for the specific fluorophores or clinical assays of interest for use in each instrument.
As an integral part of our Optical Filter manufacturing technology, we have developed a series of damage-resistant anti-reflection coatings for use in applications where surface reflection from all elements must be minimized. Our anti-reflection (AR) coatings meet or exceed the durability requirements of MIL-C-675 and MIL-C-48497 and are manufactured to withstand energy levels typically found in laser-based analytical instrumentation. Coatings for special applications where high-power lasers are required are also available. Please see Optical Filter Coatings for addtional information.
The process of optical filtering may be accomplished by absorption, reflection, or transmission of light energy (or by using a combination of these methods). The choice of the method of filtering, the physical form of the filter, the method of assembly of the filter, and the coating technology to be employed to coat the optical filter substrates, will depend upon the constraints imposed by the specifications for the filter. We offer the following optical filter construction methods. Please see Optical Filter Construction for additional information.
Surface quality and internal element quality are specifications which are used to define the level of defects to be allowed on the surface of an optical filter or within the element. our optical filters offer a standard scratch-dig of 80-50 or 60-40 depending on the product selected and we can manufacture to 40-20 for custom filters where low scatter is critical. Please see Filter Surface Quality for additional information.
| Scratch-Dig | Cost | Applications |
|---|---|---|
| 80-50 | Low | Used for imaging and low-power laser applications with unfocused beams where scatter is not critical |
| 60-40 | Moderate | Ideal for imaging and laser applications with collimated beams where scatter begins to affect system performance |
| 40-20 | High | Excellent for imaging applications and laser systems with focused beams that can tolerate little scattered light |
Please see Specifying Optical Filters for a description of the important parameters associated with the specifications of Optical Filters.
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