Thermopile Configuration Options

Typical spectral characteristics of select optical windows (wide-band pass) are graphed in transmission curves for select filters.

As a window option for our ST line of thermopile detectors, we offer a Silicon Diffractive Lens. This document includes technical information such as diffractive lens transmission curve, lens dimensions and example FOV when used with our model ST60 thermopile with 0.61mm active area.

The field of view (FOV) may be modified inside the detector package using apertures. This is also useful in eliminating crosstalk in multi-channel detectors. On TO-5 packages, the FOV may be modified by customizing the internal aperture hole size. This also defines the amount of energy coming into the package and subsequently falling on the detector active area.

Dexter Research offers several thermistor options for thermopile detectors. This document gives resistance vs. temperature plots and tables for internally mounted Chip Thermistors, Poly-silicon Resistors on ST60 & ST150 models and Chip-in-Glass thermistors for external use.

Standard optical filters, wide-band and uncoated, are compared in an informative table.