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We investigate gravitational lensing by a primary photon sphere which is asphere filled with unstable circular light orbits, and by a secondary photonsphere on a wormhole throat in a black-bounce spacetime which is suggested in[F. S. N. Lobo, M. E. Rodrigues, M. V. d. S. Silva, A. Simpson, and M. Visser,Phys. Rev. D 103, 084052 (2021)] in strong deflection limits. There is anantiphoton sphere between the primary photon sphere and the secondary photonsphere. If a light source and an observer are on the same side of the wormholethroat, in addition to an infinite number of images slightly outside of boththe primary and secondary photon spheres, an infinite number of images formedby light rays reflected by the potential barrier near the antiphoton sphere,slightly inside the primary photon sphere, might be observed.

Gravitational lensing by two photon spheres in a black-bounce spacetime in strong deflection limits