\begin{document}$ l=0.01 $\end{document}. By analyzing the null geodesics, we derive the photon sphere, event horizon, effective potential, and critical impact parameters. We then employ a ray-tracing technique to study the trajectories of photons surrounding a thin accretion disk. Three different emission models are considered to explore the observed intensity profiles of direct rings, lensing rings, and photon sphere. By comparing these results with those of the standard Reissner-Nordström black hole (\begin{document}$ l=0 $\end{document}) and the Kalb-Ramond black hole with different values of the Lorentz-violating parameter (specifically, \begin{document}$ l=0.05 $\end{document} and \begin{document}$ l=0.1 $\end{document}), we find that Lorentz symmetry breaking leads to a decrease in the radii of the photon sphere, event horizon, and innermost stable circular orbit. Consequently, the detection of these black holes is more challenging."> Charged black holes in the Kalb-Ramond background with Lorentz violation: null geodesics and optical appearance of a thin accretion disk -
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