We study the properties of the vortex lattice in unconventional superconductors, using µSQUID microscopy. The most important part is dedicated to the spin triplet superconductor Sr2RuO4. First, we examine the conventional superconductor NbSe2. It is a reference point to the unconventional superconductors imaged afterwards. We observe a hexagonal vortex lattice at low fields, and a rotation of the vortex lattice in respect to the crystallographic