pseudo1

Hi All, I am a newbie!!! Ok so here it is. I want a miniature lens to fit over my iPhone camera that fits all the following criteria: 1: reduced the horizontal field of view to approx. 20 degrees 2. minimum focal distance of 350mm 3. overall length dimension no greater than 15mm 4. don't mind if it magnifies the image. 5. light weight. I know many of you will ask why and so on but this is what I am looking for. Can anyone help??? Please??