| ZEISS | Carl -, optical instruments manufacturer established in Jena, Germany, in 1846 (5) |
| CARL | and 7dn, German maker of optical instruments who founded a company in Jena, Germany in 1846 |
| LOTTO | Italian sportswear manufacturer established in 1973 in Montebelluna in the Veneto |
| ACORN | Computer manufacturers established in Cambridge in 1978 and dissolved in 2015 (5) |
| VOGEL | Eberhard ....., 1962-76 East Germany, 1961-70 FC Karl- Marx-Stadt and 1970-82 Carl Zeiss Jena striker; 1981 European Cup Winners' Cup Final runner-up (5) |
| SAALE | Left-bank tributary of Germany's Elbe River that flows through the cities of Jena and Halle (5) |
| CANON | Originally named Precision Optical Instruments Laboratory, the current name is derived from this Japanese company's first camera, which was in turn named for the Buddhist Bodhisattva of mercy |
| STAGG | Belgium-based instrument manufacturer |
| DARKO | Donnie ___, 2001 film by Richard Kelly starring Jake Gyllenhaal and Jena Malone |
| SPECS | Optical instruments, to some |
| SISU | Finnish truck manufacturer established in Helsinki in 1931 (4) |
| MASERATI | Italian luxury vehicle manufacturer established in 1914, in Bologna, whose emblem is a trident |
| GRUNDIG | German consumer electronics manufacturer established in Nuremberg in 1945 |
| GOLDENEAGLE | Au pairs in Jena beat ugly English bird |
| RENAULT | Automobile manufacturer established by brothers Louis, Marcel and Fernand in 1899 (7) |
| YAMAHA | Torakusu ?, Japanese watchmaker born in 1851 who founded a motorcycle and musical instrument manufacturer (6) |
| WATERMAN | Luxury fountain pen manufacturer, established New York 1884 (8) |
| LENS | A transparent biconvex body in the eye which focuses upon the retina light rays entering the pupil / piece of transparent substance used in optical instruments to form an image |
| SCOPES | Optical instruments in cloak smuggled aboard ship (6) |
| PERISCOPES | Optical instruments in submarines for looking above the surface of the water (10) |
