Lots of interesting points made here, and I'm still mulling them over; none are wrong either.
Leupold is in business making and selling optical products for a profit. Up till the time they bought the name Redfield, all of their products had Leupold stamped on the product.
Somewhere along the way, the Leupold Management saw that they just might make some money by buying the name Redfield, and introducing scopes with the name Redfield stamped on them. It was strictly a management decision/gamble. I would think that leading up to the time Leupold actually bought the name Redfield, there were MANY knock down, drag out meetings by the Leupold Management on the +'s and -'s of indulging in such a caper. After the dust settled, the +'s outweighed the negatives, and at that point, Leupold made the commitment to buy the Redfield name, and produce scopes using the Redfield Logo. I, of course, do not know any of the details of that desision. What I can say is Leupold Management was 100% committed, to making Redfield scopes once more, and doing so profitably. My feeling is that the Marketing people at Leupold thought very strongly that scopes with the Redfield name on them would be a money maker. I can see no other sensible reason why Leupold would do such a thing, as mentioned by the guys posting above, and I happen to agree with their postings.
I personally have fond memories of the Redfield scopes I have had on rifles. They were very good scopes of yesteryear. Would I buy one of the Redfield's being made in the Leupold factory? I just don't know; maybe??