Author attended the 13th Congress of the International Commission for Optics(ICO-13) held on August 20-24

1984 in Sapporo

Japan and Post Congress Meeting on August 27-28 in Tsukuba. In this review

the general case of the two congresses is introduced. Since author’s interest is in information optics

the emphasis of the paper is on optical computing (in particular

optical computer)

effect of laser speckles

image processing and holography

etc.. At the same time

present and future

development of optical techniques in industries in some main developed countries(for example

USA

Japan) is dealt with.