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PIXELVISION, INC.

Imaging Spectrograph For Visible And Near Infrared (NIR) Spectral Ranges
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High-Efficiency Holographic Grating
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First Direct-Sight C-Mount Imaging Spectrograph
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Polarization Independent
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Specim Ltd. ImSpectorTM Ima ging Spectr o g raph
General Description The ImSpector adds spectral resolution to conventional imaging cameras via a standard Cmount. Rugged imaging spectrograph for visible and near infrared (NIR) spectral ranges with direct sight, astigmatism-free optics and highefficiency holographic grating with throughput independent of polarization. The system performance is polarization independent. The ImSpectorTM is an imaging spectrograph that captures a line image and disperses it to spectrum in a direction orthogonal to the line image. It is ideally suited for line inspection and color inspection machine vision systems. When coupled to a conventional black-and- white CCD camera, the addition of the ImSpectorTM forms a spectral line imaging system. Based on a unique prism-grating-prism (PGP) optical design, the ImSpectorTM is the only commercially available, direct-line- of-sight imaging spectrograph in which light goes through a straight optical axis. Unlike reflective techniques, the spectral dispersion is polarization independent. The spectrograph conveniently fits directly to most conventional C-mount imaging cameras or it can be coupled directly to PixelVision's highperformance back-illuminated cameras directly between the lens and the camera without reconfiguring the optomechanical setup. The ImSpectorTM has a broad spectral range from the 400 nm range up through the NIR (greater than 1.7 (m) and has a spectral resolution of between 5 nm and 10 nm. The direct-sight configuration offers a combination of several beneficial features: Ї High-quality, astigmatism-free image with a short focal point. Ї High-efficiency holographic volume diffraction grating and low f-number produce high throughput. Ї No reflective surfaces on the optics. Throughput independent of polarization. Ї Rugged, fixed and sealed cylindrical construction, suitable to harsh industrial conditions. Ї Small size, very simple alignment to camera. Ї Low customizing cost for application specific OEM uses in the wavelength region of 3802400 nm. The ImSpector is an ideal component for online machine vision and web inspection. It offers the first real alternative to the RGB color camera when high-resolution spectral identification, sorting and inspection on moving objects is required. The ImSpector N17, Specim's latest imaging spectrograph, is designed for NIR imaging in 900 - 1750 nm with InGaAs matrix cameras. The ImSpector converts the matrix camera to a spectral line imaging system. ImSpector N17 design employs the same unique, direct-sight spectrograph configuration as the ImSpector for silicon-camera wavelength ranges.

Astigmatism-Free Optics
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Applications Include: Online Machine Vision Web Inspection High-Resolution Spectral Identification Sorting and Inspection on Moving Objects Remote Sensing Medical Analysis
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Easy Customization for OEM Applications
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Process Control and Quality Monitoring
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Converts B&W Cameras to Color Analyzer
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Research and Development

PIXELVISION, INC. 14964 NW GREENBRIER PKWY. BEAVERTON, OR 97006 V . (503) 629-3210 F . (503) 629-3211 HTTP://WWW.PV-INC.COM E-MAIL: INFO@PV-INC.COM


Spectrograph's volume holographic transmission grating and antireflection-coated transmission optics provide high throughput which is practically independent of light polarization.

ImSpector N17 is available either with C-mount for lens optics or with a fiberoptics adapter. Up to 16 parallel fiberoptic inputs of 200 (m each can be coupled to the input slit. This makes a new generation multipoint NIR analyzer with no moving optomechanics.

ImSpectorTM Product Specifications
Model Spectral Range A
400 - 710 nm ±5 nm 430 - 900 nm ±5 nm 700 - 1000 nm ±5 nm 850 - 1750 nm ±10 nm

Dispersions

Spectral Resolution B (with 80 µm slit)
5 nm

Image Size

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Spacial Resolution
15 linepairs/mm 15 linepairs/mm 15 linepairs/mm 15 linepairs/mm

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Numerical Aperture
0.18 (F/2.8)

Slit Width
25, 50, 80, 160 µm available 25, 50, 80, 160 µm available 25, 50, 80, 160 µm available 25, 50, 80, 160 µm available

Total Efficiency (Typical)
> 50%, independent of polarization > 50%, independent of polarization > 50%, independent of polarization > 40%, independent of polarization

ImSpector V7 ImSpector V9 ImSpector V10 ImSpector V17

47 nm/mm

6.6 mm x 8.8 mm 6.6 mm x 8.8 mm 6.6 mm x 8.8 mm 7.7 mm x 9.8 mm

71.2 nm/mm

7 nm

0.18 (F/2.8)

45.5 nm/mm

5 nm

0.18 (F/2.8)

121 nm/mm

10 nm

0.18 (F/2.8)

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B

Custom Resolution can Custom image dispersion Notes for be changed to sizes available Custom slit and ranges sizes start at 1.5 nm to match OEM/Custom available in by narrowing customer's available Products the region of slit detector 380-2400 Standard spectral ranges are designed for a 6.6 mm detector (corresponding to shorter axis of 2/3" CCD). This closely matches the longer axis (6.4 mm) of Ѕ" CCD also. Spectral range may vary due to CCDE positioning tolerance in the camera. System spectral and spacial resolutions also depend on the discrete imaging nature of the CCD detector and lens quality.

ImSpector Applications

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On line machine vision for process control and quality monitoring § Upgrade of B/W vision systems with color/spectral resolving capability § Identification and sorting of colored piece-units (e.g. in electronics, automobile and plastic industries § Web and surface inspection in textile, interior material and graphic arts production § Spectral identification and sorting of agricultural and food products § 2-D color measurements § 2-D chemical analysis by fluorescence and NIR spectrometry Simultaneous multi-track process measurements with up to 16 fiber-optic inputs Field uses Scientific applications § Imaging and multi-track spectrometry in research labs and in the field § Spectral microscopy, biomedical analysis § High resolution spectral scanning of color images and works of art Airborne hyperspectral remote sensing and ground truthing

PixelView is a trademark of PixelVision, Inc. Rev. PVMD-032A - PixelVision, Inc. reserves the right to make changes to its products and product specifications and to discontinue any product or service without notice. PixelVision, Inc. warrants performance of its products to current specifications in accordance with PixelVision, Inc.'s standard warranty. Testing and other quality control techniques are utilized to the extent PixelVision deems necessary. Specific testing of all parameters of each device is not necessarily performed to support this warranty.