Investigators also found he had been secretly filming a woman in the shower without her knowledge, and that he had adapted her computer so that he could access it from his own.
Terence Munro, 58, a driver, of Goodwood Way, Brighton, was sentenced to a total of 20 months in prison when he appeared at Chichester Crown Court on Thursday (December 22).
He had previously pleaded guilty to three charges of making indecent images, one charge of voyeurism and one charge of computer misuse.
He was also required to register as a sex offender for ten years, and was given a Sexual Harm Prevention Order (SHPO) to last indefinitely, severely restricting his access to children and computers.
Officers from the Sussex Police Paedophile On-Line Investigation Team (POLIT) had executed a search warrant at Munro’s address in May 2015, after receiving information that he was accessing indecent images of children on-line.
On examining his computer they found not just 1,000 indecent images of children, but also evidence that he had interfered with the computer of a woman known to him.
On making further enquiries they also discovered that he had also secretly fitted a miniature camera into the bathroom she used, enabling him to monitor her use of it.
Sussex Police said none of the indecent images are of the woman; they are taken from the Internet, and none are thought to be of local children
In sentencing Munro, Judge Christopher Parker said: “This was a sophisticated and planned intrusion into, and the entire removal of, the privacy of a... young woman.”
Investigator Mark Hibberd of POLIT, said: “We are very glad to have brought this man to justice. Each viewing of indecent images is in effect a further abuse of the children in them, and he also caused personal torment to a victim for his own sexual gratification.”