Link to Standard Products Link to Custom Products Link to Case Studies Link to Ceramic and Glass Materials Link to Design Notes Link to Working Together Link to Accuratus Contact Form
link to Accuratus home page email link - voice: 908-213-7070 fax: 908-213-7069

Design Notes

Useful Conversion

Accuflect® Reflector Design

Accuflect® IR Background Notes


IR Radiation and Accuflect® IR

Quick Notes

1.  Emitter power density varies with the fourth power of temperature


    M=power  density in  W/m2
    A=radiating  surface area in  m2
    ε=emissivity  factor
    σ=Stefan Boltzman Constant in Wm-2T-4
    T=absolute temperature in °K

Takeaway:  Changes in temperature dramatically affect power density

2.  Wavelength of peak emission varies inversely with temperature (Wiens displacement law)


    λmax=peak emission wavelength in microns
    c=constant  2898 µm·°K
    T=absolute temperature °K

Takeaway:  emitter can be "tuned" to match absorption spectrum of the receiver

3.  Received power is proportional to distance for some source types

Point Source

P proportional to r-2

Line Source

P proportional to r-1

Planar Source

P independent of r

    r=source to receiver distance

Takeaway:  Accuflect IR provides a planar source where distance between source and receiver is not critical nor requires specially shaped reflectors

4.  Radiative transfer for a planar source


    P=power in W
    ε=source emissivity factor
    σ=Stefan Boltzman constant Wm-2T-4
    Ae=emitter area in m2
    F=view factor for receiver (as seen from emitter)
    Te=emitter absolute temperature °K
    Tr=receiver absolute temperature °K

Back to top.

Standard Products | Custom Products and Services | Case Studies | Materials
Design Notes | Working Together | Vision | Contact Us
| Site Map


© 2013 Accuratus

Site Design M. Adams