OpTest® 7 offers sophisticated measurements for a wide range of users
OpTest 7 offers an entirely fresh approach to making a sophisticated measurement technique accessible to a wide range of users. It’s based on a legacy of over 30 years of developing Optikos® MTF measurement software, and its endurance is assured by adopting the latest Microsoft® programming environments and by coding the graphical user interface separately from the application. By carefully considering the underlying architecture we have ensured that the software will endure across new generations of operating systems.
Powers both OpTest and LensCheck lens testing systems
At its core, OpTest 7 is a software application that integrates with all OpTest metrology systems, including LensCheck instruments. It controls the electronic hardware assemblies, including all motorized motion elements, to acquire and analyze video and scanning detector signals, and to present the measurement results to the user with powerful visual graphics. OpTest 7 runs under Windows 7 and 10 operating systems and includes a licensed version of Microsoft Excel with each installation. All measurement data may be exported directly to formatted Excel workbooks for easy customization and inclusion in customer reports.
Industry-leading stray light measurements
The Glare Spread Function for visible systems, and Relative Illumination measurement for both visible and infrared video-based system modules are particularly useful for automotive applications, and expand the scope of your testing with important measurements.
Auto-exposure algorithm for unsurpassed measurement efficiency
OpTest 7 version offers users a wide array of new features that enhance your measurement options, efficiency, compatibility, and ease-of-use, including our auto-exposure algorithm to automatically adjust camera levels to optimal intensity for faster measurements.
Support for measuring folded optical systems
Optikos SD-800 MWIR and SD-900 LWIR periscopic scanning image analyzers provide an unparalleled testing capability for folded optical systems and are fully supported by our latest software release.
Python™ scripting and support for new OpTest modules
The OpTest 7 flexible platform allows a wide range of measurements, including Python™ scripting with an integrated editor, while maintaining OLE support through a COM objecto in legacy programming environments, such as Microsoft Excel VBA; and also supports the new OpTest Finite Conjugate and Afocal Modules.
Easily select the interface to match your information requirements
OpTest 7 features operating modes that are designed to match the requirements and technical sophistication of a variety of users. It provides a powerful laboratory tool in Engineering Mode, while also ensuring that manufacturing operators have access to relevant settings for their needs in Production Mode. Set up and measurement of many first order parameters such as focal length and field curvature are easy to understand, and OpTest 7 also performs sequences of measurements and is able to extract many measurements from a single data structure.
OpTest 7 includes the option to make intelligent choices for you, allowing you to rely on it for automatic selections such as camera gain and exposure or sampling reticle width.
Other features include:
- Enhanced Pass/Fail criteria for improved utility for EFL, GSF, and distortion measurements
- Option to abort Combo measurement if Pass/Fail criteria are not met
- Pass/Fail flag added to MTF measurement tab and Excel report
- Optional Tan/Sag difference criteria now available
- Support for Optikos Thermal Modules for testing lenses over a range of temperatures
- MTF (Modulation transfer Function)
- Focal length
- Back and Flange Focal Length
- Chief Ray Angle
- Field tilt
- Field Curvature
- Relative Illumination
- Line of Sight
- Encircled Energy
- Axial Color
- Lateral Color
The VideoMTF ® Image Analysis Module is used in conjunction with a two-dimensional imager to provide real-time measurement of MTF. The VideoMTF ® module can be configured for use with most industry standard video format cameras to provide high-speed laboratory quality measurement capabilities. While typically used in the visible wavelength range, we offer image analyzers for the near-infrared, mid-wave infrared, and longwave infrared. An Image Analysis-based testing system is recommended for visible applications or for high-speed production testing at any wavelength. The Image Analysis Module comes equipped with the appropriate framegrabber.
VideoMTF® Provides Real-Time MTF Testing
Classical MTF testing is performed by scanning a physical edge across an image produced by an optical system edge or slit. The resultant “knife-edge scan” is a graph of the amount of light passing the edge as a function of its position. The derivative of the knife-edge function is the Line Spread Function (LSF), a one-dimensional profile of the image. The MTF of the system is the magnitude of the Fourier transform of the LSF. The VideoMTF® module uses an innovative acquisition technology to capture the entire image instantly. The area of interest, the image, is fixed within two rectangular “crosshairs” on the screen. The location of the crosshairs can be adjusted manually by the operator or automatically by the VideoMTF® module. The image area defined by the crosshairs is mapped into the computer memory through a framegrabber board. Two orthogonal LSFs are derived from the “grabbed” images and the MTF is calculated and graphically displayed. It all happens in a fraction of a second, and is continuously updated so that the MTF is displayed in real-time.
- Real-time measurements
- Framegrabber gain and offset control
- Background/dark current correction
- Sloping slit/edge correction
- Video camera
Allows for accurate MTF measurements of optical systems that form complex image structures, such as fiber optic faceplates.
The EROS™ Scanning Image Analysis Module
The EROS™ Scanning Image Analysis Module is used with OpTest® mechanical scan hardware and a single element detector to perform the most flexible and demanding measurements. Image scanning is used where video image acquisition is impractical or impossible, such as in multiple wavelength range testing or at extremely high resolutions. The scanning EROS™ software can be configured for source scanning, knife-edge scanning, or image analyzer scanning depending on the capabilities of the OpTest® hardware used with the system. The EROS™ scanning module allows complete control of scan length, number of samples, data averaging, and data filtering, making it the most powerful and flexible image analysis tool available.
- Source scanning, knife-edge scanning or image analyzer scanning
- Knife-edge function or line spread function image acquisition
- Complete control over image acquisition parameters
- Data acquisition and filtering tools
Signal acquisition, source intensity, and lock-in amplifier settings can all be monitored while scanning.
Scanning Image Analysis Module can be used in any spectral range from the ultraviolet to the long wave infrared.