Features

Spectroscopic Reflectometer

HORIBA Jobin Yvon (Edison, NJ) offers the DigiScreen spectroscopic reflectometer capable of measuring film thickness deposited on a large-area glass substrate in less than one second. With a spectral range of 400 nm to 800 nm, the DigiScreen can measure film thickness from 100 nm to several microns, and accepts sample sizes up to 2.5 × 2.7 m. The sample is manually loaded on a vertical, large-area motorized stage tilted at an angle of 10°. A Quartz Tungsten Halogen (QTH) light source coupled to an optical fiber is focused onto the sample, giving a spot size of 2 mm in diameter. A second optical fiber collects the light reflected from the sample. A 2048-pixel CCD coupled with a spectrograph measures the reflectance of the sample. The system can characterize materials such as SiN, SiON, a-Si(n+), a-Si (HDR, LDR), LTPS, c-Si, Silane-based SiOx, and TEOS.

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Photo Integrated Circuits

Hamamatsu Corp. (Bridgewater, NJ) offers a transmitter-receiver pair of photo integrated circuits (ICs) for use in MOST-compliant automotive multimedia networks. The L10063-01 transmitter and S10064-01 receiver provide a maximum data communications rate of 50 Mbps over plastic optical fiber links. The transmitter offers an operating mode that reduces the optical output level by half, reducing power consumption. The receiver has a low-power-consumption “sleep mode” and can shift into normal operating mode by detecting a light trigger. The receiver also features a wide dynamic range and is immune to external noise. Both components are housed in a clear plastic package and have an operating temperature range of -40°C to +105°C. Signal transfer between the components is performed digitally via a TTL interface.

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Ethernet CCD Camera

The TM-1405GE from JAI PULNiX (San Jose, CA) is a high-resolution, 1.4-megapixel CCD camera. The interline transfer CCD permits full vertical and horizontal resolution with shutter speeds up to 1/16,000 sec. Asynchronous test, combined with a no-delay, pulse-width controlled shutter, provides flexible triggering and exposure control for machine vision applications. The camera is combined with a standard 1/2" image sensor and captures 30 frames per second at full resolution of 1392 × 1040. The camera features 100-meter cables, standard ports, and a look-up table that allows full dynamic range control of the CCD by externally selectable knee slopes. The camera has both digital Gigabit Ethernet and analog output for interfacing with other equipment.

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Pulsed Fiber Laser

Lumics (Berlin, Germany) has introduced the LU1060F400 pulsed fiber laser that offers up to 0.8 mJ pulse energy with average power of 4W. It is a short-pulse Ytterbium fiber laser in Master Oscillator Power Amplifier (MOPA) configuration. The laser operation mode can be changed by selecting customer-specific parameters, such as output power, pulse energy, repetition rate, and pulse width, via a conventional USB interface. The laser emits at a wavelength from 1060 to 1080 nm from a fiber with a 25-um core. The fiber is a standard length of 1.5 m, terminated with an FC/APC connector. An optional collimator and focuser, as well as metal armored cable, are available.

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Image Analysis Software

Sensors Unlimited, Goodrich Corp. (Princeton, NJ) has released SUI Image Analysis Software, which allows full operational control of the high-speed windowing functions on the SU320MSW-1.7RT Shortwave Infrared (SWIR) Windowed Snapshot MiniCamera, and the SU640SDWH-1.7RT High-Resolution SWIR Windowing Camera. The standalone, executable software options include full control of four preset regions of interest or windows, in the center of the frame. Variable windows can be established through the software interface. The user may select position, size, and shapes, and may perform image enhancements on captured images and save the images in a movie format with or without NUCs and/or enhancements.

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QC Lasers Improve Hazardous Gas Monitoring

The measurement of gases associated with industrial processing/emissions monitoring has become increasingly important as the need to improve efficiencies in process control has increased, and legislation governing emissions has come into force. Gases including NOx, SOx, CO2, CO, NH3, and H2O commonly are used to assess processes such as combustion and quenching, while many fall under emissions legislation resulting from the Kyoto agreement.

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LUTs: Take Control of Your Imaging Application

It is hard to see how machine-vision camera manufacturers produce decent-quality products at reasonable prices. The multi-megapixel sensors at the heart of current machine-vision cameras are among the largest of VLSI (very-large-scale integration) semiconductor chips, and it is almost impossible to make them with the pixel-to-pixel uniformity required for high-precision imaging applications. Without some way of compensating for manufacturing variations across a given image sensor, many otherwise acceptable chips would have to be discarded. That would drastically reduce manufacturing yields and drive sensor-chip prices far beyond levels acceptable for many applications.

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