An optical transmitting and receiving device 1 includes a main body portion 4 and has a base substrate 5 at a bottom-surface side of this main body 4. In a front surface 5a of this base substrate 5, formed is a recess-like first cavity 7 and second cavity 8, and an LD 9 is disposed in the first cavity 7, and a PD 12 is disposed in the second cavity 8. An LD terminal electrode 15 of the LD 9 is electrically connected, via a wire 28, to a base substrate wiring portion 19 formed on an insulating film 40 on the front surface 5a. Moreover, in a light shielding member 20 laminated on and fixed to the front surface 5a side of the base substrate 5, formed is a wire storing portion 29 to store the wire 28. Since these make it no longer necessary to provide a space to store the wire 28 in the first cavity 7, it becomes possible to downsize the first cavity 7. Accordingly, it becomes possible not only to downsize the base substrate 5 but also to downsize the optical transmitting and receiving device 1.光收受信裝置1係具備本體部4,並在該本體部4的底面側具有基體5。在該基體5的前面5a形成凹狀的第1空洞(cavity)7及第2空洞8,並在第1空洞7內配置LD9,在第2空洞8內配置PD12。LD9的LD端子電極15係透過電線28,而被電性地接續在前面5a之絕緣膜40上所形成之基體配線部19。此外,在被層積並固定於基體5的前面5a側之遮光構件20,形成收納電線28之電線收納部29。藉由此等,因為不需要將收納電線28之空間設在第1空洞7,而可以小型化第1空洞7。從而,小型化基體5,進而,能夠小型化光收受信裝置1。1...光收受信裝置5...基體5a...前面7...第1空洞(cavity)(第1凹部)8...第2空洞(cavity)(第2凹部)9...LD(發光元件)10...LD陽極11...LD陰極12...PD(受光元件)13...PD陽極14...PD陰極19...基體配線部(配線)20...遮光構件20a...前面20b...後面22...開口(第1光通過孔)23...針孔(第2光通過孔)27...光透過構件28...電線29...電線收納部40...絕緣膜
