While there are many apps to transfer via Bluetooth - I believe they only allow for transfers between iDevices. I haven't seen anything that'll go from a different device (e.g. Blackberry) to the iPad.
The only thing I can suggest is either e-mail them to yourself, use your computer to transfer between the two or use the Blackberry to upload the photos to an online storage "cloud." Not to be a shill for the company, but Dropbox has a Blackberry app and an iPad app. You could create a free account and then use Dropbox to transfer between the two. I'm not sure you can transfer to Dropbox via Bluetooth, however. But, definitely with WiFi or 3G...
Sorry I didn't provide better help/answer.
Marilyn