SAN FRANCISCO—Jins Eyewear is launching Jins Screen Night, a new version of its Jins Screen glasses that protect the eyes from prolonged use of digital devices, including computer screens and smart phones.

Designed for those who spend late nights surfing and texting on a tablet or other mobile device, these glasses filter out 60 percent of melatonin-reducing blue light, which may be just enough to help get the restful sleep deserved, the company said.

A 2015 study conducted by Keio University in Japan showed that wearing Jins Screen Night increases production of the sleeping hormone, melatonin. Jins reported that since launching Jins Screen—originally known as Jins PC—in Japan in 2011, it has sold more than six million pairs.

Jins Screen Night is available online and at the Jins Union Square store in San Francisco. It can be specially ordered and is available for an additional $80, plus the cost of the frame. The regular Jins Screen costs an additional $60, and is also available in the non-prescription boxed Square and Wellington styles.

amobijohn@jobson.com