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We present the type-1 active galactic nuclei (AGN) sample extracted from theVIMOS VLT Deep Survey first observations of 21000 spectra in 1.75 squaredegree. This sample, which is purely magnitude limited, free of morphologicalor color selection biases, contains 130 broad line AGN (BLAGN) spectra withredshift up to 5. Our data are divided into a wide (Iab < 22.5) and a deep (Iab< 24) subsample containing 56 and 74 objects respectively. Because of its depthand selection criteria, this sample is uniquely suited to study the populationof faint type-1 AGN. Our measured surface density (~ 472 +- 48 BLAGN per squaredegree with Iab < 24) is significantly higher than that of any other opticallyselected sample of BLAGN with spectroscopic confirmation. By applying amorphological and color analysis to our AGN sample we find that: (1)~23% of theAGN brighter than Iab=22.5 are classified as extended; this percentageincreases to ~42% for those with z < 1.6; (2) a non-negligible fraction of ourBLAGN are lying close to the color space area occupied by stars in u*-g' versusg'-r' color-color diagram. This leads us to the conclusion that classicaloptical ultraviolet preselection technique, if employed at such deep magnitudes(Iab=22.5) in conjuction with a preselection of point-like sources, can missmiss up to ~35% of the AGN population. Finally, we present a composite spectrumof our sample of objects. While the continuum shape is very similar to that ofthe SDSS composite at short wavelengths, it is much redder than it at lambda >3000 A. We interpret this as due to significant contamination from emission ofthe host galaxies, as expected from the faint absolute magnitudes sampled byour survey.Comment: Accepted to A&A, 18 pages, 14 figure

The VIMOS VLT Deep Survey: the faint type-1 AGN sample