Originally posted by RioRico Last time I looked (about 90 seconds ago) Nikon was part of the Mitsubishi Group.
Last time I looked (about 90 seconds ago) Hoya was part of the Sanwa kieretsu. Which includes Hitachi, Sharp Corporation, Kyocera, Diahatsu, Suntory etc. IOW, a small slice of a large pie.
Japanese corporate structures and governance seem rather complicated. Technically, Nikon is a free-standing corporate entity. If you look at it's major shareholders in it's annual report for 2010, for example, you will only see about 5% of the stock has any direct Mitsubishi fingerprints on it. But history, and business (especially banking) relationships, no doubt go deeper than that. The same applies to Hoya I suspect.