Ken Rockwell has always surmised (is this the right verb) the Trip 35 has a Tessar design.
Olympus has been doing a better job of celebrating its heritage lately. The put a pair of vintage Trip 35 brochures online.
There was a little diagram on it that looks very Tessar-like.
The manual is at the brilliant Butkus site.
Cameras loaded as of today:
- Olympus Trip 35 with 40mm f2.8 D.Zuiko with Kodak Elitechrome 100 ASA
- Olympus Infinity Jr (AF-10 Super with flash off options) with 35mm f3.5 with Kodak Ektar 100
- Yashica Electro 35 CC with 35mm f1.8 Color-Yashinon with Kodak BW400CN
- Yashica 635 TLR with a 80mm f3.5 Yashikor with Fuji Reala 100 ASA