A former Paterson police officer who recorded a video of himself smiling before watching a fellow cop beat a hospital patient last year was sentenced Tuesday to six months in federal prison for his attempts to cover up the assault.

Roger Then was also given a year of supervised release when he was sentenced by U.S. District Judge William H. Walls on Tuesday in Newark, the U.S. Attorney’s Office said in a statement.

Then, 29, of Paterson, was accused of pushing a hospital patient who earlier attempted suicide and later recorded another cop beating the man.

Then pleaded guilty in December to a single charge of misprision of felony - or concealing the assault by his partner, Ruben McAusland.

Then and Ruben McAusland went to St. Joseph’s Regional Medical Center in the city on March 5, 2018, to monitor a man who had been hospitalized after attempting suicide, authorities said.

The first of the two assaults was captured on the hospital’s surveillance video. It shows McAusland pushing the victim’s wheelchair with his hands and punching the man in the face near the admissions desk after the man threw medical glove boxes at the staff. Moments later, Then grabbed the man by the back of the neck and pushed the falling wheelchair further toward the floor.

The second took place while Then and McAusland were watching the man as he lay in a hospital bed. Then hit record on his cell phone, smiled into the camera and turned it toward McAusland as his partner put on a pair of hospital gloves and struck the man in the face after the patient directed an expletive toward him.

An incident report filed by the officers' didn’t mention either assault.

The hospital patient’s injures were severe enough that he had to to undergo eye surgery, officials said.

McAusland was sentenced to more than five years in prison last week. McAusland, 27, pleaded guilty last year to selling marijuana, heroin, and powder and crack cocaine that he stole from a crime scene. McAusland sold the drugs to a person working with law enforcement.

In addition, five Paterson cops have been charged in an alleged scheme to steal cash during traffic stops and then falsify reports.

Jeff Goldman may be reached at jeff_goldman@njadvancemedia.com. Follow him on Twitter @JeffSGoldman. Find NJ.com on Facebook.