  We present the first results obtained at CFHT with the TRIDENT infrared
camera, dedicated to the detection of faint companions close to bright nearby
stars. Its main feature is the acquisition of three simultaneous images in
three wavelengths (simultaneous differential imaging) across the methane
absorption bandhead at 1.6 micron, that enables a precise subtraction of the
primary star PSF while keeping the companion signal. Thirty-five stars have
been observed in two observing missions, with no detection so far. It is shown
that a faint companion with a DeltaH of 10 magnitudes would be detected at 0.5
arcsec from the primary.
