TECHNOLOGY OPTICS: FILTERS & COATINGS Optical synoptical A round-up of the latest products for filters and coatings


The Thin Film Division of Hind High Vacuum Company Pvt (HHV) designs, develops and manufactures precision optical coatings and components for industry and research. For the past four decades, HHV has developed thin film techniques to fulfil the needs of space, defence, electronics, semiconductor, and biology with diameters from 3 to 600mm. HHV produces operating


Iridian Spectral Technologies designs and manufactures optical filters for applications such as telecommunications, spectroscopy, and 3D entertainment. These industry leading filters are offered as custom solutions or standard items available for purchase online in the company’s webstore.


Recently Iridian has extended its visible and near-infrared filter offerings (300 to 2000nm) into the mid-wave and long-wave infrared (MLWIR) wavelength region (2 to 10µm).


Optical filters in this MLWIR range include band-pass filters (BPF), edge-pass filters (EPF), anti- reflection (AR), and beam-splitter (BS) coatings, enabling optical systems to detect the presence and concentration of gases of interest in environmental or process analysis. Standard gas lines include CO2 , CO, H2


, CH4 O and O3 filters with


custom wavelengths available on request. The standard sizes (1-inch diameter) can be customised to <3x3mm2


for use with TO can-


style detectors. All of Iridian’s filters provide


extreme reliability and durability and leverage in-house automation to offer low-cost solutions. www.iridian.ca


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theatre lighting reflectors, narrow-band filters, UV reflectors, infrared coatings, anti-reflection coatings, beam splitters, laser mirrors, metallic coatings and tribological coatings. HHV makes special filters with steep edges and narrow bandwidths for fluorescence imaging applications. These sets are manufactured using advanced deposition technology and address the needs of highly sensitive imaging applications. HHV has developed NIR biometric filters for applications in iris scanning, security screening at airports and borders, controlled access to restricted areas and personal identification. www.hhvltd.com


Edmund Optics Techspec Multi- Edge Fluorescence Dichroic Filters are for real-time live cell analysis or high-speed imaging applications. The filters are designed to be used with Techspec Multi-Band Fluorescence Bandpass Filters for isolating wavelength ranges. The filters can be used to create creating high contrast, multi-colour images using a Pinkel configuration. The filters have multiple cut-on


ELECTRO OPTICS l FEBEUARY 2013


Jenoptik Optics for infrared systems of metrology, test and monitoring equipment need to transmit high-quality images and signals with long-time stability. They must do so despite harsh conditions and use in industrial, civil and military applications. Standard DLC – also referred to as ‘hard carbon’ IR coatings – represent the cutting edge in optical systems of thermo- sensor-based monitoring plants for industrial, civil and military applications. This is typically achieved through a single-layer coating. Sophisticated design and processes combine a standard hard-carbon-coating with multi- layer anti-reflective coating to increase transmission at a wider


range while minimising internal coating tensions. The spectral properties can be achieved in two separate wavelength ranges (e.g. MWIR and LWIR) and provide users with new solutions in design and application. Jenoptik’s Hybrid-DLC coatings combine the properties of the superior toughness of protective DLC-coatings with the versatility and multi spectral functionality of high-end IR coatings. www.jenoptik.com/optics


wavelengths on a single filter, high peak transmission and allow the simultaneous viewing of multiple fluorophores. www.edmundoptics.com


Laser Components can offer a large range of optical filters for all types of applications including fluorescence, machine vision and astronomy. Owing to this, a variety of coatings are needed to achieve the optical requirements characteristic to each application.


Certain coatings such as IAD (ion


assisted deposition) and IBS (ion beam sputtering) are very popular in the current industry as high laser damage thresholds and high optical performance can be achieved. If used with an online monitoring system it allows control and in-process self-correction to ensure the final product is of exceptional quality. There are many filters available in stock such as laser line filters,


bandpass filters and neutral density filters. The company can cover a large wavelength range from 190nm up to 2500nm and custom options are available on request. www.lasercomponents.com


www.electrooptics.com


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