Fig. 1. (a) JWST primary mirror deployed; (b) Deployment sequence of JWST in orbit

Fig. 2. Stowed and deployed configurations of LUVOIR-A (a) and LUVOIR-B (b)

Fig. 3. Segmented Mirror Telescope (SMT)

Fig. 4. (a) HOASIS in deployed configuration; (b) Primary mirror of optical instrument in stowed configuration

Fig. 5. (a) Primary and secondary mirror in stowed configuration; (b) Primary and secondary mirror in deployed configuration

Fig. 6. TU Delft DST in deployed configuration

Fig. 7. High-resolution deployable CubeSat for Earth observation

Fig. 8. (a) Optical layout of DISCIT; (b) Schematic diagram of DISCIT; (c) The stowed hinge; (d) The deployed hinge

Fig. 9. (a) Proof of concept of deployment in zero gravity; (b) Primary mirror segments deployed by compressing springs

Fig. 10. (a) The stowed DPT; (b) The deployed DPT

Fig. 11. (a) Primary mirror in stowed configuration; (b) Primary mirror in deployed configuration

Fig. 12. (a) Overview of the PRISM in orbit; (b) Flame structure of the deployable boom

Fig. 13. (a) Collapsible Dobson space telescope; (b) Deployable tube primary structure shown collapsed （left） and deployed （right）

Fig. 14. (a) Stowed configuration; (b) Deployed configuration; (c) Movement directions of components

Fig. 15. (a) Deployable barrel in deployed configuration; (b) Spring motor mounted below primary mirror

Fig. 16. Working principle of the deployment mechanism