Das saw off a tough challenge from Chinese Taipei's Deng Yu-Cheng earlier in the day.
Svetlana Gomboeva collapsed as she checked her final scores
Power of love helps archer Atanu Das defeat 2012 champion Oh.
Deepika shot 668 out of a possible 720 points at the 72-arrow 70-metre round to qualify for the knock-out round while Atanu Das was ranked 19th in the men's section.
Ranked fourth in the qualification round, Deepika found the going tough against the second seed, who produced fine shooting, including a flawless third set to clinch the match 6-0 in her favour.
Summary of sports events and persons who made news on Saturday