Near Eye Displays Test System

A new test system from Gamma Scientific (San Diego, CA) offers high spatial resolution color and contrast measurements for near eye displays (NED), such as virtual reality (VR) and augmented reality (AR) headsets, and heads up displays (HUD). The Gamma Scientific NED Measurement System incorporates compact imaging optics which feed both an integrated camera viewing system and a low-noise, high-accuracy spectroradiometer.

A LED spot projector (viewed using the camera) enables the operator to point the optics at a precise position within the display field, and selection of the appropriate aperture (using a motorized wheel) then permits measurements over fields of view ranging from 0.1° to 5°. The system's graphics generator produces test patterns and color fields to measure luminance, color, contrast, uniformity, spectral transmittance, response time (flicker), transmittance MTF, and left/right eye parallax measurements on subregions of displays as small as a single symbol.

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Fiber Optic Temperature Sensing Signal Conditioner

Micronor (Camarillo, CA) and Optocon AG (Dresden, Germany) have collaborated to create the FOTEMP1-OEM-MNT, a low-cost, small-form-factor, single-channel signal conditioner that seamlessly integrates Fiber Optic Temperature Sensing into any industrial control system, medical instrumentation, or other OEM design. The standard FOTEMP1-OEM-MNT controller features include a calibrated measurement range of −40°C to +300°C and built-in USB, RS232, and SPI interfaces.

The FOTEMP1-OEM-MNT sources the broadband light to the GaAs sensor, and an internal optical spectrum analyzer evaluates the reflected optical signal to determine the corresponding absolute temperature. This sensing and interrogation method allows for lower cost, greater accuracy (±0.2°C), widest measurement range (−200°C to +300°C), and faster response compared to other fiber optic sensor techniques, including fluorescence decay and fiber Bragg gratings.

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Camera Link to HD-SDI Converter

The CLT-371 Camera Link Translator from Vivid Engineering (Shrewsbury, MA) converts Camera Link to HD-SDI, enabling the use of Camera Link cameras with HD-SDI monitors, etc. Camera Link to HDMI and Camera Link to DVI are also supported via an inexpensive external adapter.

The CLT-371 works with most color and monochrome base-configuration cameras. Output format is either 1920 × 1080 or 1280 × 720. Features include automatic frame rate adaptation, Bayer white balance correction, camera synchronization support, and an RS-232 port for camera control. No special programming is required; configuration is enabled via rear-panel switch settings.

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High-Speed Camera

FLIR Systems (Wilsonville, OR) has announced tire X6570sc high-speed infrared camera. The longwave infrared (LWIR) X6570sc records 640 × 512 full frame video at 234 Hz (up to 14,550 Hz with windowing), with the rapid integration times needed to analyze high-speed processes or monitor fast temperature spikes. Temperature differences are distinguished down to 20 mK Connection options include Camera Link Medium and BNC, for sync and trigger with external equipment. Additionally, the X6570sc offers saved user configurations for efficient transfer between test teams.

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Line-Scan Camera

Chromasens GmbH (Konstanz, Germany/Chesterland, OH) has introduced the 3DPIXA HR (High Resolution) line-scan camera system. The device is available in two models. The 3DPIXA HR 5 μm has a larger field of view (approximately 35 mm) and a scanning speed of up to 30 kHz. The 3DPIXA HR 2 μm camera covers a 16-mm field of view. Both options enable inspection in flip chip assembly and other 3D machine vision applications, such as verification of wirebonds and printed circuit boards, and the detection of micron defects on reflective flat or cylindrical metal surfaces.

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Circular Polarizer Filter

American Polarizers, Inc. (API) (Reading, PA) has developed a new circular polarizer filter with a 50% transmission level. Whereas most circular polarizers have maximum transmission levels of around 42%, the API high-transmission circular polarizers assure that more light is transmitted through the filter to the viewer, resulting in a brighter display.

The filters are available in standard sheet sizes from 8 × 10 inches up to 18 × 24 inches, as well as custom sizes. To accommodate requests for specially shaped filters, API utilizes inhouse laser cutting and waterjet technology to fabricate circular polarizer filters in custom shapes specified by the customer. API will also provide the high-transmission circular polarizers laminated to glass or acrylic. Anti-reflection, antiglare, and conductive coatings may be specified for the acrylic and glass filters.

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Line-Scan Camera

Princeton Infrared Technologies, Inc. (Monmouth Junction, NJ) offers the OEM version of its LineCam12, an indium gallium arsenide (InGaAs) line-scan camera that operates from 0.4 to 1.7 μm in the shortwave infrared (SWIR) and visible spectrum. With USB3 Vision™ and Camera Link digital outputs, the camera features a 1024 × 1 pixel format and 12.5 μm pitch. Powered by USB 3.0, the device images SWIR and visible light simultaneously.

The advanced SWIR-InGaAs 1024-element linear array images over 37k lines per second and comes in two models: the LineCam12-12.5-1.7T-OEM (with 250 μm tall pixels for spectroscopy), and the LineCam12-12.5-1.7M-OEM (with 12.5 μm square pixels for machine vision tasks). The OEM versions can be configured with customized settings, including high temperature operation at 70 °C or very cold operating temperatures of -40 °C.

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100W Picosecond Laser

Onefive GmbH (Zurich, Switzerland) has released the new Genki – 10 XP picosecond laser featuring 100W output power in a new, compact package. The system is based on the ultra-stable Genki seed laser and provides clean pulses shorter than 10 ps, which is an optimal pulse duration for many micro-machining applications.

To satisfy the increasing demand of picosecond laser workstations, the Genki – 10 XP has been optimized to provide up to 100W of average power and 300 J pulse energy at the industry-standard wavelength of 1064 nm. Wavelength conversion options are also available. Pulse repetition rates up to 80 MHz can be achieved. It also offers burst-mode operation.

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Beam Expanders

Optical Surfaces Ltd. (Surrey, UK) is currently manufacturing high-performance beam expanders for the Extreme Light Infrastructure for Nuclear Physics (ELI-NP) project to develop the world's most powerful laser system. Offering an unprecedented level of power in ultrashort pulses, the two new 10 petawatt (1,000,000,000,000,000) high-intensity lasers will be delivered to the Horia Hulubei National Institute of Physics & Nuclear Engineering (IFIN-HH) in Magurele, Romania.

Because of its international reputation for supplying high power laser optics, Optical Surfaces Ltd. was selected to manufacture and supply 4 × 580 mm aperture and 6 × 200 mm aperture laser beam expanders for the ELI-NP project.

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Smart Cameras

The new EyeCheck 5xxx smart camera series from EVT Eye Vision Technology (Karlsruhe, Germany) is available with the EyeVision image processing software or as an OEM version. Both camera options are Linux (Ubuntu) smart cameras, equipped with a quad-core Intel ATOM CPU. The EyeCheck 5xxx series also offers 4 GByte DRAM and 64 GByte storage, as well as a HDMI display port. The products contain CCD and CMOS sensors with resolutions between 0.3 and 12 Megapixels. A LED ring light can be dismounted if necessary, and the camera has two programmable, constant LED drivers. The EyeCheck smart camera provides image evaluation for tasks such as pattern matching, code reading (bar code, DMC, QR), OCR/OCV, object detection, measurement technology, and surface inspection.

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Ultra-Small CMOS Camera

Toshiba Imaging Systems Division (Irvine, CA) has released the IK-CT2, an ultra-small, chip-on-tip video camera system that can be integrated into medical endoscopes and industrial inspection systems. The 0.7 × 0.7 mm backside-illuminated CMOS sensor features 220 × 220 pixels and an integrated 120-degree field-of-view glass lens. The IK-CT2 features 12-channel color matrix adjustment, freeze frame, and five user-programmable settings files. Remote control is possible through RS-232. The new system includes the CMOS sensor assembly (which fits a 1.0-mm diameter tip), 120-degree field-of-view lens (with a focal range of 3 mm to 50 mm), 3.5-meter sensor cable, interface board, and camera control unit (CCU). The CCU delivers color accuracy and contrast at 59.94 Hz progressive scan, using DVI-D and USB 2.0 outputs.

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Laser Interferometer Surface Isolation Source

4D Technology Corporation (Tucson, AZ) has introduced the adjustable Surface Isolation Source (SIS) for its AccuFiz Fizeau laser interferometers. Plane-parallel optics are transparent components with parallel faces, or optical systems with two or more parallel surfaces. Measuring plane-parallel optics with a laser interferometer can be challenging as the parallel surfaces all contribute interference fringes.

The Surface Isolation Source is an optional, external laser source for 4D Technology AccuFiz Fizeau interferometers. The fiber coupled source excludes all but the surface of interest, making it straightforward to measure flat, transparent optics with physical thickness as thin as 200 microns. In a single setup both the front and back surfaces of an optic can be measured, without repositioning.

Transmitted wavefront error, homogeneity, and optical thickness can then be obtained from a combination of measurements. The adjustable path match mechanism allows the operator to quickly select and optimize fringe modulation for any surface that is within a 20 millimeter measurement zone centered at 100 mm in front of the aperture.

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Laser Patterning Software

LinPerf™, short for Linear Perforation, is a new feature of the LASERDYNE S94P software from Prima Power Laserdyne (Champlin, MN). It provides an easy way to create programs that produce linear patterns of laser processed features on flat surfaces. The flat surfaces may be oriented in any plane accessible by the laser beam based on the number of axes and configuration of a LASERDYNE laser processing system.

LinPerf is designed to take the hard work out of creating patterns with a laser system. Users provide information about the pattern such as hole spacing, orientation of the pattern, number of passes required to produce the holes, laser conditions, type of assist gas, and hole diameter or feature shape in the S94P graphical interface. The S94P dialog box also displays calculated parameters including linear speed, hole elongation, and an estimate of run time for PosiPulse and MultiPulse modes. Calculated parameters are automatically updated when any inputs are changed.

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Photonics & Imaging Technology Magazine

This article first appeared in the March, 2017 issue of Photonics & Imaging Technology Magazine.

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