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Photomultiplier tube for film scanning
These include the Optel range of optical
in the absence of line sweeps, with provision for pre-set run-on length.
mounts, beam splitters, pinhole filters and transgimbal and holographic plate mounts. Also available is the Tri-Spider laser pipeline surveying system. The Tri-Spider which uses laser transmitter and optical detectors, each mounted on three adjustable positioning legs inside the pipe is claimed to enable pipes to be laid to an accuracy of 0.001 in. The system can be used in pipes 6 to 14 in in diameter.
Honeywell Ltd., Charles Square, Brackness, Berkshire, UK Arc lamp collimator Rofin has announced the Model B-32-40 arc lamp collimator, designed specifically for use on xenon and mercury arc lamp sources.
The company is also hoping to market two other devices; the Laser Doppler Velocimeter developed by Cambridge Consultants, and the speckle pattern interferometer developed by Professor Butters of Loughborough University.
Optical and Mechanical Development Division, Survey and General lnstrument Co Ltd., Sudbury House, Stanstead Parade, Tylney Road, Bromley, Kent. High-gain laser amplifiers Apollo Lasers have introduced a range of laser amplifiers which use ruby or neodymium doped glass. Three sizes of pumped length of laser rods are available: 6, 12 and 16 in. The laser heads are designed to operate at 12 kV resulting in short, pumping pulses from helical flashlamps. A small signal gain of up to 400 is attained with glass in the 12 in head with less than 5000 J input to the flashlamps. The amplifiers can be converted to oscillators with the addition of end mirrors and a Q-switch. Apollo Lasers Inc., 6365
Arizona Circle, Los Angeles, California 90045, USA.
Photomultiplier tube
applications in relatively high light levels. Intended for use in the blue and green channels, the 9558 F will gradually supersede the S 11 photocathode 9656 types. The $20 photocathode incorporated in the 9558 F has improved linearity and pulse shape over a wide range of light levels. This is expected to result in a better picture quality and easier setting up. The 9558 F is physically interchangeable with other tubes in the EMI $20 series.
Photomultiplier tube for film scanning A photomultiplier tube type 9558 F has been introduced by the Electron Tube Division of EMI Electronics, for use in colour flying spot film scanning
3 Windhill, Bishop's Stortford, Hertfordshire, UK
EMI Electronics & Industrial Operations, Blyth Road, Hayes, Middlesex, UK. Fibre-optic line-scan recorder A versatile line-scan recorder capable of vertical deflection has been introduced by Honeywell. Using a fibre-optic faced cathode ray tube for minimum spot size, it provides high resolution recordings of output from line-scanning infra-red, video, radar and ultrasonic systems.
Laser amplifier
The device consists of an input focusing tens, a pinhole and an output collimator lens. An image of the arc is formed at the pinhole by the lamp housing condensing lens. The 60 mm focal length achromatic exit lens provides a collimated beam, 22 mm in diameter, or will create an image of the pinhole at a distance. The pinhole is 25/am in diameter and can be adjusted to a 1/am resolution and the lens translation adjustment allow the users to focus or collimate the output beam. The device fits directly to the Oriel C-32 lamp source and may be fitted to the C-60 series of lamp housings via an adaptor. Rofin Ltd.,
Model 1856 uses a cathode ray tube to generate and deflect a light spot across 6 in recording paper or film at a controlled speed. Its intensity is modulated by the amplitude of the input signal, fibre optics being used to transmit the light from the inner phosphor to the surface of the recording medium. With a spot size of less than 0.005 in and a bandwidth of 10 MHz, about 50 line-pairs cm -1 can be resolved. A choice of sweep speeds from 2/as cm -1 to 1 s cm -t is available and automatic chart control turns off the chart drive
Arc lamp collimator
High-speed vacuum photodiodes E G & G Electro-Optics Division has announced the availability of a line of bi-planar, vacuum photodiodes capable of sub-nanosecond rise times. The photodiodes are obtainable with S-I, S-20, and S-25 photo-cathode surfaces with diameters of 10 mm and 20 mm. They are impedance matched with a coaxial design for 50 or 125 ~2. The photodiodes are claimed to feature low dark-current, long-term stability, wide dynamic range, and high linear
Optics and Laser Technology
April 1972
95
in the absence of line sweeps, with provision for pre-set run-on length.
mounts, beam splitters, pinhole filters and transgimbal and holographic plate mounts. Also available is the Tri-Spider laser pipeline surveying system. The Tri-Spider which uses laser transmitter and optical detectors, each mounted on three adjustable positioning legs inside the pipe is claimed to enable pipes to be laid to an accuracy of 0.001 in. The system can be used in pipes 6 to 14 in in diameter.
Honeywell Ltd., Charles Square, Brackness, Berkshire, UK Arc lamp collimator Rofin has announced the Model B-32-40 arc lamp collimator, designed specifically for use on xenon and mercury arc lamp sources.
The company is also hoping to market two other devices; the Laser Doppler Velocimeter developed by Cambridge Consultants, and the speckle pattern interferometer developed by Professor Butters of Loughborough University.
Optical and Mechanical Development Division, Survey and General lnstrument Co Ltd., Sudbury House, Stanstead Parade, Tylney Road, Bromley, Kent. High-gain laser amplifiers Apollo Lasers have introduced a range of laser amplifiers which use ruby or neodymium doped glass. Three sizes of pumped length of laser rods are available: 6, 12 and 16 in. The laser heads are designed to operate at 12 kV resulting in short, pumping pulses from helical flashlamps. A small signal gain of up to 400 is attained with glass in the 12 in head with less than 5000 J input to the flashlamps. The amplifiers can be converted to oscillators with the addition of end mirrors and a Q-switch. Apollo Lasers Inc., 6365
Arizona Circle, Los Angeles, California 90045, USA.
Photomultiplier tube
applications in relatively high light levels. Intended for use in the blue and green channels, the 9558 F will gradually supersede the S 11 photocathode 9656 types. The $20 photocathode incorporated in the 9558 F has improved linearity and pulse shape over a wide range of light levels. This is expected to result in a better picture quality and easier setting up. The 9558 F is physically interchangeable with other tubes in the EMI $20 series.
Photomultiplier tube for film scanning A photomultiplier tube type 9558 F has been introduced by the Electron Tube Division of EMI Electronics, for use in colour flying spot film scanning
3 Windhill, Bishop's Stortford, Hertfordshire, UK
EMI Electronics & Industrial Operations, Blyth Road, Hayes, Middlesex, UK. Fibre-optic line-scan recorder A versatile line-scan recorder capable of vertical deflection has been introduced by Honeywell. Using a fibre-optic faced cathode ray tube for minimum spot size, it provides high resolution recordings of output from line-scanning infra-red, video, radar and ultrasonic systems.
Laser amplifier
The device consists of an input focusing tens, a pinhole and an output collimator lens. An image of the arc is formed at the pinhole by the lamp housing condensing lens. The 60 mm focal length achromatic exit lens provides a collimated beam, 22 mm in diameter, or will create an image of the pinhole at a distance. The pinhole is 25/am in diameter and can be adjusted to a 1/am resolution and the lens translation adjustment allow the users to focus or collimate the output beam. The device fits directly to the Oriel C-32 lamp source and may be fitted to the C-60 series of lamp housings via an adaptor. Rofin Ltd.,
Model 1856 uses a cathode ray tube to generate and deflect a light spot across 6 in recording paper or film at a controlled speed. Its intensity is modulated by the amplitude of the input signal, fibre optics being used to transmit the light from the inner phosphor to the surface of the recording medium. With a spot size of less than 0.005 in and a bandwidth of 10 MHz, about 50 line-pairs cm -1 can be resolved. A choice of sweep speeds from 2/as cm -1 to 1 s cm -t is available and automatic chart control turns off the chart drive
Arc lamp collimator
High-speed vacuum photodiodes E G & G Electro-Optics Division has announced the availability of a line of bi-planar, vacuum photodiodes capable of sub-nanosecond rise times. The photodiodes are obtainable with S-I, S-20, and S-25 photo-cathode surfaces with diameters of 10 mm and 20 mm. They are impedance matched with a coaxial design for 50 or 125 ~2. The photodiodes are claimed to feature low dark-current, long-term stability, wide dynamic range, and high linear
Optics and Laser Technology
April 1972
95