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Xenics高速制冷短波紅外相機 - Cheetah系列是基于一個內部開發的制冷型InGaAs探測器，分辨率為640 x 512像素，像元尺寸20um。配有單級TE制冷探測器，提供400hz、800Hz或1700hz的高幀率；配備TE3制冷探測器的相機提供高達110hz的幀率。相機接口為CameraLink，可見短波紅外(vSWIR)選項可用于擴展到可見波長波段。
高速短波紅外相機產品特性：
1、分辨率：640×512；
2、像元尺寸：20μm；
3、幀速可達1700Hz；
4、低暗電流；
5、CameraLink接口。
高速短波紅外相機參數：
| 芯片參數 | Cheetah-640-CL | |||||
| 芯片類型 | InGaAs Focal Plan Array (FPA) ROIC with CTIA ology | |||||
| 分辨率 | 640 x 512 | |||||
| 像素尺寸 | 20 μm x 20 μm | |||||
| 光譜范圍 | 0.9 μm to 1.7 μm (VisNIR optional 0.4 to 1.7 μm) | |||||
| 量子效率 | 80% | |||||
| 像素轉化率 | > 99 % | |||||
| 芯片尺寸 | 12.8 mm x 10.2 mm; 16.4 mm diagonal | |||||
| 制冷方式 | TE1-cooled | |||||
| ROIC噪聲 | High gain: 60 e-; low gain: 400 e- | |||||
| 暗電流 | 0.19 x 106e-/s/pixel or 30 fA @ 200 mV bias at 288 K | |||||
| 滿阱容量 | High gain: 80 x 10x3 e-; low gain: 1.1 x 10x6 e- | |||||
| 增益 | High gain: 20 μV/e- | |||||
| 增益 | Low gain: 1.6 μV/e- | |||||
| 相機參數 | Cheetah-640-CL 400 Hz | Cheetah-640-CL 800 Hz | Cheetah-640-CL 1730 Hz | |||
| 鏡頭 |
| |||||
| 焦距 | 25 mm f/2.1 (SWIR) | |||||
| 鏡頭接口 | C-mount - Spectrometer holes | |||||
| 圖像性能 | ||||||
| 大幀速 | 444 Hz | 865 Hz | 1730 Hz | |||
| 集成類型 | Snapshot | |||||
| 讀出模式 | Integrate Then Read (ITR) | |||||
| 讀出模式 | Integrate While Read (IWR) | |||||
| 感興趣區域 | Minimum size 32 x 4 | |||||
| 曝光時間 | 1 μs up to 40 ms @ 25°C sensor temperature (high gain mode); or up to 100 ms @ 268K sensor temperature (high gain mode) | |||||
| 增益模式 | High gain and low gain | |||||
| 片上圖像處理 | Single Non-Uniformity correction (NUC) can be uploaded | |||||
| ADC | 14 bit | |||||
| 接口 | ||||||
| 相機接口 | CameraLink (serial LVDS line on CameraLink port 1) | |||||
| 圖像采集 | Base CameraLink (12 bit) | Medium CL (12 bit) | Full CameraLink (8 bit), 2 x medium CameraLink (12 bit) | |||
| 觸發 | Trigger in and out (3.3 V CMOS) | |||||
| 供電 | ||||||
| 功率 | < 4 W without TEC operation; Max. 25 W with TE-cooling | |||||
| 供電 | 12 V | |||||
| 物理特性 | ||||||
| 制冷方式 | Forced air cooling | |||||
| 工作溫度 | 0°C to 50°C | |||||
| 外形尺寸 | 140 x 135 x 90 | |||||
| 重量 | 2 kg | |||||
