| model | BRM-6501 | BRM-6502 | BRM-6503 |
| Grating parameters | Number of scribed lines: 1200 lines Shine wavelength: 500nm |
Number of scribed lines: 1200 lines Shine wavelength: 500nm/800nm |
Number of lines: 1200 lines/600 lines Shine wavelength: 500nm/800nm/1800nm |
| wavelength range | 200~1100nm | 200~1100nm | 200~2200nm |
| Wavelength accuracy | ≤±0.5nm | ≤±0.5nm | ≤±1nm |
| focal length | 250mm | ||
| stray light | <0.0002 | ||
| Electronic shutter | Standard configuration, supports remote control | ||
| Filter wheel | Optional, electric control | ||
| size | 331×295×167mm | ||