　　Weve combined our expertise in miniature spectrometers and accessories with experience as a manufacturer of precision optics to create a compact system for real-time transmittance measurement of ophthalmic lenses and other optical components.

　　The Ocean Optics Optical Transmittance Spectrophotometer (OTiS) is ideal for both in-line and in-lab applications where transmittance accuracy (to +/- 1.0%) and precision (+/- 0.1%) are critical. Common applications include measurement of optical coatings, windows and filters, and glass and plastic components.

　　About the System

　　The OTiS covers the 380-780 nm wavelength range and accepts samples from 10-150 mm in diameter and up to 10 mm thickness. The system comprises several components:

　　High-resolution miniature linear CCD-array spectrometer configured for 380-780 nm

　　High-power, 20-watt tungsten halogen light source

　　Fiber optic integrating sphere for collecting signal transmitted through the sample

　　Optics for improved beam collimation and spectral sensitivity distribution

　　Sample fixture (z-stage) to hold sample in place and exclude ambient light

　　Short optical fiber to channel signal from the integrating sphere to the spectrometer

　　Customized lens transmittance and color calculation software

　　Under the Hood

　　Characteristics

　　Spectral range: 380-780 nm

　　Detection: Miniature fiber optic spectrometer

　　Light source: High-power tungsten halogen (360-2000 nm)

　　Sample collection: Fiber optic integrating sphere

　　Color calculations: CIE L*a*b* color characteristics

　　Measurement calibration: Manual calibration using known filter standard (not included); calibration time <30 seconds

　　System calibration: Recommend annual recalibration

　　Transmittance calibration standards: Available (contact an Applications Scientist for details)

　　Typical samples measured: Windows, filters, glass and plastic lenses

　　Sample size: 10-150 mm diameter, up to 10 mm thickness

　　Optical stage: White powder-coated aluminum (optional black anodized aluminum version available)

　　Software: Customized lens transmittance and color calculation software

　　Quality: Calibration referenced to accepted standards

　　Manufacturing compliance: CE/UL/RoHS/WEEE

　　Performance

　　Transmittance measurement accuracy: +/-1.0%

　　Transmittance measurement precision: +/-0.1%

　　Data acquisition time: <5.0 seconds

　　Light source output: 20 watts

　　Light source stability: 0.5% (~15 minutes to stabilize)

　　Light source drift: <0.3% per hour

　　Bulb lifetime: 2,000 hours

　　Bulb color temperature: 3,000 K

　　Operating temperature: 5 C - 35 C

　　Operating humidity: 5-95% at 40 C

　　Computer & Power Requirements

　　Operating systems: Windows Operating System

　　Computer interfaces: USB 2.0 @ 480 Mbps

　　Power requirements: 100-240V, 50-60 Hz, 1.5A

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