日本光学产业技术振兴协会总结并公布了日本近三年国内光学产业产值的调查结果。这次调查共向338家相关公司发出了问卷调查表,得到其中1/3即113家公司的有效回答。公布的数据表明,1997年的实际产值为5兆2724亿日元,比1996年增长99%,首次突破5兆日元(图1)。但与1996年的同比增长 The Japan Optical Industry Technology Promotion Association has summarized and announced the survey results of Japan’s optical industry output value in the past three years. In this survey, a total of 338 companies were sent questionnaires and 1/3 of them, 113 companies, responded effectively. The published data shows that the actual production value in 1997 was 5 trillion 272.4 billion yen, an increase of 99% over 1996, and exceeded 5 trillion yen for the first time (Figure 1). However, the year-on-year increase from 1996