Lens, Double, Concave, Spherical: Optically worked, ground edges
|
Type |
Diameter |
Focal Length |
|
A |
50 mm |
50 mm |
|
B |
50 mm |
100 mm |
|
C |
50 mm |
150, 200, 250, 300, 500, 1000mm |
Lenses, Cylindrical, Plano Concave: Ground & polished faces, edges ground. Size 50 mm high & 45 mm wide.
|
Type |
A |
B |
C |
|
Focal Length |
60 mm |
150 mm |
300 mm |
Lens, Cylindrical, Double Concave: Ground & polished faces, edges ground. Size 50 mm high & 45 mm wide.
|
Type |
A |
B |
C |
|
Focal Length |
70 mm |
150 mm |
200 mm |
