Fig. 7
From: Zoom systems with tuneable lenses and linear lens movements
The collinear solution space for a classical zoom lens of the mechanical compensation type shown in Fig. 1 (above, requirements: \( \mathrm{V}=3,{\mathrm{f}}_{\mathrm{A}}^{\prime }=25\ \mathrm{mm},{\mathrm{e}}_{\mathrm{min}}^{\prime }=5\ \mathrm{mm},{\mathrm{f}}_{\mathrm{min}}^{\prime }=12,5\ \mathrm{mm} \)) and the 2D analysis of the minimum collinear system lengths for the classical (lower left) and the proposed ‘hybrid photographic zoom lens’ (lower right)