BCI GROUP LIMITED
BCI Group Ltd has been the key manufacturer of optics for more than20 years. Our guiding principle is to provide our customers with the highest quality optics products,we have successfully created a
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These high quality binoculars from feature a stylish rubber covered aluminium body which protects the device from external damage. The ergonomic thumb indents and finger ridges provide an anti-slip grip and make it easy to use these binoculars.
Optical:
The multi-coated optics of these binoculars ensures that you get bright and sharp images with high contrast by increasing the light transmission. These binoculars feature a roof-prism type lens with 8x 10x 12x magnification, 5 m closest focusing distance, 25 mm objective lens diameter, 7.5,6.0,5.0 degrees actual field of view, and 11 mm eye relief.
Materials:
Optical glass, aluminium alloy, Rubber, ABS
| Model | BJ5582 | ||
| Specification | 8x25mm | 10x25mm | 12x25mm |
| Magnification | 8x | 10x | 12x |
| Obj.lens (mm) | 25 | 25 | 25 |
| Eyepiece diameter(mm) | 13 | 13 | 13 |
| Field Angle | 7.5° | 6.0° | 5.° |
| Field of View @ 1000m | 131m | 105m | 88m |
| Field of View @ 1000yds | 393ft | 315ft | 264ft |
| Apparent Field of View | 60° | 60° | 60° |
| Exit pupil (mm) | 3.0 | 2.5 | 2.0 |
| Eye relief (mm) | 11.0 | 11.0 | 11.0 |
| Diopter Adjustment | ±5 | ±5 | ±5 |
| Dusk Index | 14.1 | 15.8 | 15.8 |
| Relative Brightness | 9 | 6.25 | 6.25 |
| Prism System | Porro | Porro | Porro |
| Prism Glass | Bk7 | Bk7 | Bk7 |
| Focus System | Center | Center | Center |
| Lens Coating | Fully Multi | Fully Multi | Fully Multi |
| Eyecups | Fold-Down | Fold-Down | Fold-Down |
| Waterproof | NO | NO | NO |
| Size (mm) | 109x53x101 | 109x53x101 | 109x53x101 |
| Weight (g) | 245 | 245 | 245 |