Fig. 1. Principle diagram of continuous zoom optical system with three group linkage

Fig. 2. Flow chart of continuous zoom optical system design

Fig. 3. Configuration of continuous zoom optical multiple system

Fig. 4. Layout of continuous zoom optical system

Fig. 5. MTF curves of continuous zoom optical system

Fig. 6. Spot diagrams of continuous zoom optical system

Fig. 7. Distortion diagrams of small field (a) and large field (b) of continuous zoom optical system

Fig. 8. MTF curves of continuous zoom optical system at high and low temperatures

Fig. 9. Spot diagrams of continuous zoom optical system at high and low temperatures

Fig. 10. Worst offenders

Fig. 11. Estimated radius of spot RMS

Fig. 12. Estimated value of MTF

Fig. 13. Relationship of phase and periods with diameter of the binary optical element

Fig. 14. Diffraction efficiency of binary optical element

Fig. 15. Cam curve of continuous zoom optical system

Fig. 16. Relationship between cam rotation angle and pressure ascending angle