Why Google doesn't want to show our images?

[Meditinc.com]

Our website http://www.fiberscope.net has a good positions in search for the most of important keywords, but for some reason store's images are not visible in search results.

All images have ALT attributes but represented in Google Images very poor.

Any ideas and suggestions regarding this issue?

[Mike_Davis]

It looks good to me.  I did a image search for your alt tags and found your images.

Articulated Video Borescope - several of your images are showing.

Also check this out: site:http://www.fiberscope.net (Image Search)

You are looking golden!

[Meditinc.com]

Thanks Mike, but when you request a direct keyword, e.g. "borescope" we're nowhere (but still good in google search)

[Everett]

I see this image in the third row: http://static.fiberscope.net/media/infoblock/default/_IGP0894-copy_1.png on Google Image Search for "boroscope" and I see your site above the fold for Google web search, same keyword.

I don't see that there is any problem.