Systems and methods for image projection

A method, comprising:

• providing, via a light source at a first position within a housing, a light beam;
• positioning a first achromatic doublet at a second position within the housing;
• and
• positioning a second achromatic doublet at a third position within the housing, the second position between the first position and the third position,
• receiving, via a slot within the housing, a slide that includes a graphical image, the slot located between the first position and the second position and at a defined distance from the first achromatic doublet, the defined distance dependent on a first focal length of the first achromatic doublet, a second focal length of the second achromatic doublet and a distance between the first achromatic doublet and the second achromatic doublet;
• and
• forming, by a combination of the first achromatic doublet positioned at the second position and the second achromatic doublet positioned at the third position, a virtual thin lens to produce an effective focal length (feff) defined in terms of the first focal length of the first achromatic doublet, the second focal length of the second achromatic doublet and the distance between the first achromatic doublet and the second achromatic doublet, wherein the virtual thin lens is located at a fourth position defined according to second position and the third position.