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TOOLS & INSTRUMENTS

# Transfer spectrophotometer

A Perkin-Elmer Lambda 1050 spectrophotometer is used to complement the reference reflectance and transmittance instruments. It performs this function by measuring samples relative to standards calibrated on the reference instruments. The instrument measures non-fluorescent samples at room temperature. The conditions of measurement and measured quantities for this instrument are given below. The illuminator has two sources, a deuterium (D2) arc lamp and a quartz-tungsten-halogen incandescent lamp, order-sorting filters, a double-grating monochromator, and a chopper. The sample compartment has two beams, one for the reference and one for the sample. Integrating sphere accessories are added for diffuse reflectance and transmittance measurements. The receiver has collection optics and photomultiplier tube (PMT), indium-gallium-arsenide (InGaAs), and lead sulfide (PbS) detectors.

## Specifications/Capabilities

Conditions for transmittance and reflectance measurements using the Perkin-Elmer Lambda 1050

Optical / photometry / laser metrologyOptical physics and communications

## Organizations

                          - NIST Headquarters
                            - Laboratory Programs
                              - Physical Measurement Laboratory
                                - Sensor Science Division
                                  - Surface and Interface Metrology Group

## Details

## Contact

                    -  Catherine Cooksey  catherine.cooksey@nist.gov      (301) 975-6208   

## Related Tools & Instruments

Reference Transmittance Spectrophotometer (RTS)

Robotic Optical Scattering Instrument (ROSI)

Reference Integrating Sphere for Spectral Reflectance

## Related Projects

Spectrophotometry

Spectral Reflectance and Transmittance

### HEADQUARTERS

301-975-2000

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