OtO Photonics' RedBullet (RB) series are a new generation of ultra-compact Czerny-Turner cavity spectrometers featuring a single concave mirror in place of separate collimator and focussing mirror components.
This innovative arrangement provides the sensitivity and resolution benefits of a Czerny-Turner cavity design in an extremely compact form-factor with an overall size (including connectors and control boards) of only 51.4mm x 36.4mm x 29mm (~54cm³ ).
Despite its compact form-factor SilverBullet features an extremely rigid optical bench ensuring a platform with excellent thermal, humidity, shock and vibration stability.
RedBullet is currently available with a choice of two linear InGaAs sensors - 128-pixel (RB4524) and 256-pixel (RB4564). In 2024 OtO Photonics will be releasing a thermoelectrically cooled model, GoldBullet, which will be the world's smallest TE-cooled NIR spectrometer.
All Bullet-series micro spectrometers feature 8-bit 8051 microcontrollers providing high optical resolution and sensitivity along with short integration time, fast readout speed, high accuracy trigger timing and low power consumption.
| Description | RB4524 | RB4564 |
| Sensor | Hamamatsu G8160 128 Pixel InGaAs |
Hamamatsu G8160 256 Pixel InGaAs |
| Dark Noise |
<14 (High Gain) <10 (Low Gain) |
<12 (High Gain) <10 (Low Gain) |
| Dynamic Range |
6250 (High Gain) 7200 (Low Gain) |
6500 (High Gain) 9500 (Low Gain) |
| SNR |
2000 (High Gain) 6000 (Low Gain) |
3000 (High Gain)
6700 (Low Gain) |
| Integration Time | 6µs to 24s | |
| Optical Parameters | f/#: 4.5 NA: 0.11 |
|
| Dimensions | 51.4 x 36.4 x 29 mm | |
| Spectral Range | 900nm to 1700nm | |
| Grating | 293.53 grooves / mm, Blaze Angle 1300nm | |
| Slit Width | 25µm, 50µm, 100µm | |
| Resolution (50µm Slit Width) | ≤ 15nm FWHM | ≤ 12nm FWHM |
Over time we expect additional grating options with application specific spectral range, sensitivity and resolution characteristics so please feel free to discuss your specific needs to see if we can match to existing configurations or develop an optimised solution.
 |
RedBullet product brief |
|
RedBullet data sheet |
Power and communication with RB-Series spectrometers is via high speed micro-USB with the addition of 6 user-programmable digital I/Os.
The inclusion of OtO's SpectraSmart software ensures that RedBullet users can be up-and-running within minutes whilst the availability of a Software Development Kit for Windows and example code for Linux facilitates integration into a broad range of OEM instruments.
For more information on RedBullet and the forthcoming GoldBullet TE-cooled NIR microspectrometer please Contact Us to discuss your application.
