PHOTON RT UV-VIS-MWIR SPECTROPHOTOMETER

• World’s first spectrophotometer designed for optical coaters
• World’s only instrument to feature UV-MWIR (220-5200 nm) polarization measurement capability, a unique opportunity offering deeper insight into real performance of optical coatings

The PHOTON RT UV-VIS-MWIR scanning spectrophotometer is designed specifically for unattended measurement of optical samples with coatings. The instrument is produced in six configurations relative to the effective wavelength range – from 185 nm up to 5200 nm.

KEY ADVANTAGES:

• Record-wide wavelength range configuration in a single instrument: 185-5200 nm
• More than 10 times faster measurement compared to other tools on the market
• No need to re-calibrate the baseline after change of angle of incidence
• Measurement of transmittance and absolute specular reflectance from the same area on the substrate – perfect for backward analyses of thin film design
• The state-of-art measurement channel head represents the most complex and capable mechanism of its kind to be used for characterizing of coatings at different AOIs, polarizations, with wide range of beam deviation and beam displacement up to /- 60,0 mm
• Fully unattended measurement of sophisticated single-element and cemented prisms: beamsplitters, dove prisms, right angle prisms, penta and half penta prisms, rhomboid prisms, roof prisms, Schmidt prisms, Pechan prisms. Prisms can be mounted or unmounted.
• Radically minimized human errors in the measurement process due to fully automated procedures
• Silent and smooth mechanism for lifting and lowering the lid

PHOTON RT LWIR Spectrophotometers

Application

LWIR Transmission and Refection Measurement of Plano Optics at Normal and Variable Angles of Incidence

Description

Accurate and reliable infrared spectral measurements of optical coatings are one of the most critical challenges today. Optical manufacturers around the world specify increasingly sophisticated IR coatings for their planar optics focusing on better detection and identificaion of objects at long distances. Often, the production capabilities for obtaining optical coatings are well ahead of the existing metrological capabilities for certifying their quality.

The PHOTON RT 7512 spectrophotometer is a unique instrument specially designed to effectively meet these challenges. The instrument allows measuring the transmission and reflection of coatings designed for LWIR. An unsurpassed feature of the PHOTON RT 7512 is the ability to carry out automatic measurements at variable angles of incidence up to 60 degrees in polarized light. These non-trivial tests are supported with the built-in feature which accurately compensates for beam displacement at high angles and ensures S-pol and P-pol results in just a few minutes. Maximum thickness of the sample can be a record 40 mm.

LINZA 150 Spectrophotometer for Lenses and Lens Assemblies

The LINZA 150 spectrophotometer is designed for broadband transmittance and reflectance measurement of lenses and lens assemblies (objectives), adding a whole new dimension to your optical metrology capabilities.

Indeed, lenses come in vast variety of sizes and shapes which makes them extremely difficult to measure. Given the inherent challenges in measuring transmittance or reflectance on lenses, optical engineers often need to combine data from a several witness samples in order to tease out basic details about optical performance of a lens. However, due to the nature of any deposition technology, the coating on lenses differs from that on the witness sample. Even more insurmountable barrier is the need to measure the off-axis performance of the optical lens .

With LINZA 150, you get transmission data on axis and reflection data at any point of the lens surface, fully unattended. This ensures that only perfect lenses with perfect coatings are delivered to customers and approved for lens assemblies. This valuable data also helps our customers to backward analyze and improve their deposition technology.

LINZA 150 Spectrophotometer is also a great instrument for your QA/QC lab ensuring that lenses from your supplier do meet your specs. The instrument is perfectly suited for both routine lens measurements and sophisticated improvement of lens coating technology.

Application
MWIR On-axis Transmission Measurement of Lenses and Lens Assemblies.

Why spectral measurements of lenses are so important?

Most of the optical parts are lenses. Lenses come in vast variety of forms and sizes, both convex, concave, cylindrical and aspheric. Lenses are coated in vacuum chambers when placed on the fixture or planetary rotation holder.

Due to the nature of the vacuum deposition process there is no possibility to measure actual transmittance or reflectance on lenses in a real time. So flat witness samples are always used for process monitoring. However, the coating on lenses often differs from that on the witness sample. For many applications, it is critical to know transmission of the real lens. The actual optical performance can be often analyzed only once all lenses are installed in the optical system. It may take substantial time and efforts to identify the «bad» lens. These costs grow even higher for systems and objectives having multiple lenses. Needless to say, spectral performance of complete lens objectives also needs to be assessed!

LINZA 2752 spectrophotometer effectively addresses these challenges when it comes to on-axis transmission measurements of MWIR lenses and objectives. With its large compartment and sliding detectors, one can successfully measure individual lenes with diameter from 10 mm to 150 mm, and complete lens assemblies with end-to-end length up to 680 mm.