lindsaylohancourtpreview.jpgX17online exclusively has learned that Judge Elden Fox has decided to ban all cameras from his Beverly Hills courtroom during Lindsay's court appearance this Friday in connection with her probation violation.

A courthouse source confirms that everything in the courtroom will be kept under wraps. Judge Fox has also made it known that all devices are prohibited ... including Blackberrys, laptops and iPhones.

However, like the last court appearance, a sketch artist will be allowed inside in order to draw up the courtroom happenings.

Court starts promptly at 8:30. We'll see if Lindsay, who will be making her way from Betty Ford in Rancho Mirage, is on time.