is the technique of analysing the interaction of light with any object to measure unknown quantities. The measurement is done by first considering the transmission of light without any obstacle in place and then comparing the same with the results of the transmission of light when there is an object placed in its path. This makes metrology ideal for applications where physical contact is not possible with the object in question. Optical metrology uses different sources of light for different applications. The different light sources include broadband, lasers and narrowband light sources. The light rays are then receieved and the data thus obtained undergoes processing, where it is analysed. Optical metrology can be used for measurement requirments where physical contact is not required but more importantly, it can be used for aplications where a specific point of a sample needs to be analysed against other points within the same sample itself. As such, there has been a considerable development in the field of miniaturization across all industries and in such a scenario, optical metrology serves as the perfect toll for minute measurements with high precision.
Further to the uses of optical metrology mentioned above, optical metrology is also used for the calibration of a number of equipment as well as sensors because of the ability to measure with high precision without contact which in many cases is a key requirement for calibration and testing.
Optical metrology has witnessed considerable changes in terms of advancements which have taken place over the years. The sensors have become more accurate and through miniaturization, have been able to be integrated across a number of devices across a wide range of applications. Oil and gas is one new application that has recently been adopting optical metrologys for use of testing and measuring. In addition to this, the recent onset of connected home living is another key area for the growth of the optical metrology market. Optical metrologys can be used to identify if any device is working beyond the stipulated time based on the amount of light which is released from it (in the case of a TV or even lighting at home) and accordingly send an electrical output to take action upon the same. As of 2015, Europe is leading the market in terms of contribution to the overall optical metrology systems market primarily for the aerospace sector.
In terms of Optical metrology by application the market has been divided into the following Sensor model calibration, Inspection of polished surfaces , Laser speckle metrology, Photogrammetry, Measurement of uncertainties in complex objects, Sensor signal processing and Interferometric distance measurements
The Optical metrology market
has also been segmented by the following devices Laser scanners, Vision measuring machines and Laser micrometry. In addition, the Optical metrology market has been segmented by light source Broadband, Lasers and Narrowband light. The Optical metrology market has also been segmented by the following geographies Americas, APAC, Europe and ROW.Following are just a few of the companies that are operating in the Optical metrology market:
- Breuckmann GmbH
- FARO Technologies
- GOM mbH
- Hexagon Metrology, Inc.