Projection system and method

An image projecting method, the comprising:

• operating a spatial light modulating (SLM) system, including one or more SLM units located in the propagation of input light coming from one or two light source assemblies to modulate the light in accordance with the image to be projected, the light source assembly being configured to generate light of one or more predetermined wavelength range;
• and operating said one or more SLM unit to modulate input light in accordance with the image to be projected;
• and
• selectively directing the input light propagating towards the SLM system or light modulated by the SLM system to propagate along at least one of first and second light propagation channels associated with first and second projection planes, respectively to thereby project the image onto at least one of the first and second planes.

A miniature projection system comprising:

• a light source system including at least two light source assemblies generating at least two light beams, respectively, of different wavelength ranges;
• a planar optical element operable as a light guide for light incident thereon with an angle corresponding to a total internal reflection condition to thereby maintain substantially all the energy of the incident light within the waveguide;
• a first light director assembly accommodated in optical paths of the at least two generated light beams to direct them onto said planar optical element with said predetermined angle of incidence;
• the planar optical element carrying on its surfaces a phase modulation arrangement including at least two phase modulation elements in optical paths of said at least two light beams, respectively, propagating along the waveguide, and a spectral phase adjusting element accommodated in an optical path of the phase modulated light propagating along the light guide, the phase modulation arrangement and the spectral phase adjusting element acting together to provide beam shaping and wavelength combining to enable combining of said at least two light beams of different wavelengths into a combined light beam and direct the combined light beam towards a spatial light modulator (SLM) unit.