Recently, although demands of larger scale and large function for integrated circuits are increased, the progress of VLSI technologies is slowing down. Therefore, optically reconfigurable gate arrays (ORGAs) that can realize dynamic reconfiguration have been developed as an alternative technology of current integrated circuits. The ORGAs consists of a holographic memory, a laser array, and a gate array VLSI. The ORGAs can be dynamically reconfigured by using such optical components. Among such researches, programmable ORGAs that can be reprogrammed by a writer have been developed. This paper presents the architecture of a 4-context programmable ORGAs and its writer without an imaging lens.