The bi- convex lenses listed are made with BK7 glass however any glass type may be used. The lenses are designed to work best at 1:1 but can be used at any ratio.
The lenses have a standard AR coating but any type of multilayer coating may be ordered. Most lenses are in stock and can be shipped within 24 hours. Westech can produce a custom lens from any drawing or specification.
Bi-Convex Lens Specifications
| Diameter | EFL | P/N |
| 6.00 | 10.00 | 8057 NR |
| 6.00 | 12.00 | 8058 NR |
| 6.00 | 15.00 | 8059 NR |
| 6.00 | 30.00 | 8060 NR |
| 9.00 | 12.00 | 8061 NR |
| 9.00 | 20.00 | 8062 NR |
| 12.70 | 15.00 | 8063 NR |
| 12.70 | 20.00 | 8064 NR |
| 12.70 | 25.00 | 8065 NR |
| 12.70 | 30.00 | 8066 NR |
| 12.70 | 40.00 | 8067 NR |
| 12.70 | 50.00 | 8068 NR |
| 12.70 | 100.00 | 8069 NR |
| 25.40 | 25.40 | 8070 NR |
| 25.40 | 30.00 | 8071 NR |
| 25.40 | 35.00 | 8072 NR |
| 25.40 | 40.00 | 8073 NR |
| 25.40 | 50.00 | 8074 NR |
| 25.40 | 60.00 | 8075 NR |
| 25.40 | 75.00 | 8076 NR |
| 25.40 | 100.00 | 8077 NR |
| 25.40 | 125.00 | 8078 NR |
| 25.40 | 190.00 | 8079 NR |
| 25.40 | 175.00 | 8080 NR |
| 25.40 | 200.00 | 8081 NR |
| 25.40 | 250.00 | 8082 NR |
| 25.40 | 300.00 | 8083 NR |
| 25.40 | 400.00 | 8084 NR |
| 25.40 | 500.00 | 8085 NR |
| 25.40 | 750.00 | 8086 NR |
| 25.40 | 1000.00 | 8087 NR |
| 50.80 | 60.00 | 8088 NR |
| 50.80 | 75.00 | 8089 NR |
| 50.80 | 100.00 | 8090 NR |
| 50.80 | 125.00 | 8091 NR |
| 50.80 | 150.00 | 8092 NR |
| 50.80 | 175.00 | 8093 NR |
| 50.80 | 200.00 | 8094 NR |
| 50.80 | 250.00 | 8095 NR |
| 50.80 | 300.00 | 8096 NR |
| 50.80 | 400.00 | 8097 NR |
| 50.80 | 500.00 | 8098 NR |
| 50.80 | 750.00 | 8099 NR |
| 50.80 | 1000.00 | 8100 NR |