The luminosity functions of 12 open clusters are derived for which their membership and the colors of their individual stars have been established by detailed proper motion study and high quality photometric work. The resulting luminosity functions of these clusters are presented and discussed.

ABSTRACT
Ⅰ. INTRODUCTION
Ⅱ. OBSERVATIONAL DATA AND REDUCTION PROCEDURES
Ⅲ. DERIVED LUMINOSITY FUNCTIONS
Ⅳ. A BRIEF SUMMARY AND CONCLUSIONS
REFERENCES

• ANN HONG BAE(Department of Earth Science, Busan National University)
• YU KYUNG LOH(Department of Astronomy, Seoul National University)
• YUN HONG SIK(Department of Astronomy, Seoul National University)