日本光产业技术振兴协会发表了1989年度光产业生产总值(预计)的调查结果。调查表明,日本的光产业生产总值预计达到24983亿日元,比1988年度增长20%(4128亿日元)。这一金额包含了从1988年度追加的 The Japan Photonics Industry Technology Promotion Association released the survey results of the 1989 gross industrial output (expected). According to the survey, Japan’s gross output value of optical products is expected to reach 2,498.3 billion yen, an increase of 20% (412.8 billion yen) over 1988. This amount includes additional from 1988