A device for measuring radiation is disclosed. The device comprises optics
and electronics at least partially enclosed in a housing portable by a
single human being. In a preferred embodiment, the housing comprises a
window to admit radiation of a desired wave length and houses optics and
electronics to collect and convert admitted radiation into an electrical
signal. A data processor may be disposed in the housing or exterior to
the housing and may convert and store the electrical signal into an
analyzed, e.g. digital, form. It is emphasized that this abstract is
provided to comply with the rules requiring an abstract which will allow
a searcher or other reader to quickly ascertain the subject matter of the
technical disclosure. It is submitted with the understanding that it will
not be used to interpret or limit the scope or meaning of the claims.