Nikon stock is rapidly approaching junk levels, they don't have as many other divisions that can prop them up.
Sorry, what do you consider "junk levels?" There is no such thing as "junk stock" and if there were such a thing, a stock with a 590.7 billion dollar market cap and a 12.5 P/E ratio would certainly not be one of them. Nikon is nowhere near its lowest stock price. Just because its stock has been on a slow steady marginal decline for a few month does not mean that Nikon is in any kind of long-term trouble.