Uncooled 640×512 LWIR Thermal Camera Comparison: Customer Requirement vs. Mini Series Module
目次
導入
最近, a customer inquired about a compact thermal imaging module with the following key parameters:
解決: 640×512
フレームレート: 60fps
レンズ: 9.1mm athermal fixed-focus
視野 (H×V): 48.7°×38.6°
Spectral range: 8-14μm
Thermal sensitivity (NETD): <50mK
ビデオ出力: CVBS (NTSC)
動作電圧: 4.5–18V
動作温度: -40°C~+80°C
大きさ: 25.8×25.8×28mm
重量: 38グラム
This request perfectly aligns with our Thermal Module (Mini Series) line — a family of ultra-compact uncooled LWIR camera cores. Below is a detailed comparison between the customer’s requirements and our Mini-640-CVBS モデル.
1. Specification Comparison
| パラメータ | 顧客の要件 | Vcan2170 (Mini-640-CVBS) | Result |
|---|---|---|---|
| 検出器の種類 | Uncooled (unspecified) | Vanadium Oxide (VOx) uncooled FPA | ✅ Match |
| 解決 | 640×512 | 640×512 | ✅ Match |
| ピクセルピッチ | 12μm | 12μm | ✅ Match |
| スペクトル範囲 | 8-14μm | 8-14μm | ✅ Match |
| レンズ | 9.1mm athermal fixed-focus | 9.1ミリ / 13mm F1.0 athermal | ✅ Match |
| 視野 (視野) | 48.7°×38.6° | 45.9°×36.9° | ⚠️ Slight difference |
| フレームレート / Refresh Rate | 60fps / 25Hz | 50fps | ⚠️ Slightly lower |
| 熱感度 (NETD) | <50mK | ≤40mK @ F1.0 | ✅ Better |
| 画像処理 | NUC, 3DNR, DDE | NUC, 2D/3DNR, DDE | ✅ Match |
| Display Mode | ホワイトホット | 18 color palettes (includes White Hot) | ✅ More options |
| ビデオ出力 | CVBS (NTSC) | CVBS / USB2.0 | ✅ Match (more flexible) |
| 電源 | 4.5–18V | 4.5–20V | ✅ Match |
| 消費電力 | — | <0.75W | ✅ Low power |
| 大きさ | 25.8×25.8×28mm | 17.3×17.3×35.6mm | ⚠️ Different structure |
| 重量 | 38グラム | 21グラム (レンズなし) | ⚠️ Lighter |
| 動作温度 | -40°C~+80°C | -40°C~+70°C | ⚠️ 10°C lower upper limit |
| Detection / Recognition / ID Range | 1.1キロ / 250メートル / 170メートル | Not specified | ⚠️ Depends on lens |
| Depth of Field | 1.69m–∞ | Not specified | ⚠️ Not defined |
| テレビシステム | NTSC | CVBS出力 ( PAL or NTSC ) | ✅ Match |
2. Summary of Compatibility
| カテゴリ | 互換性 | Comments |
|---|---|---|
| Core Imaging Performance | ✅ Fully compatible | Same resolution, pixel pitch, 感度 |
| Optical Lens / 視野 | ✅ Nearly identical | FOV difference <3° |
| 信号 & Power Interface | ✅ Compatible | CVBS and USB output, wide voltage range |
| Image Algorithms | ✅ Enhanced | 18 palettes, NUC + 3DNR + DDE |
| Mechanical Size / 重量 | ⚠️ Different | Mini Series smaller and lighter |
| Environmental Tolerance | ⚠️ Slight difference | Operates up to +70°C (対. +80℃) |
| フレームレート | ⚠️ 50fps vs 60fps | Minor gap for fast motion scenes |
3. Technical Evaluation
ザ・ Mini-640-CVBS module meets or exceeds most of the customer’s core performance indicators.
その 12μm uncooled VOx sensor, ≤40mK thermal sensitivity, そして F1.0 athermal lens ensure high-quality thermal imaging even under harsh environmental conditions.
The only parameters that differ slightly are:
- フレームレート: 50fps (instead of 60fps)
- 動作温度: +70℃ (instead of +80°C)
- Physical size: Smaller footprint, longer length
These variations are typically negligible for UAV, 安全, and inspection applications.
4. Recommended Applications
- UAV / Drone Thermal Imaging
- Lightweight and compact, ideal for airborne integration.
- Security and Surveillance
- Detects human or vehicle heat signatures in total darkness.
- 産業検査
- Used for electrical fault detection and equipment monitoring.
- 消防 / サーチ & レスキュー
- Locates hotspots or victims through smoke or fog.
- Outdoor and Wildlife Observation
- Clear thermal visibility in night or low-light conditions.
5. FAQs
1. What does “Athermal Lens” mean?
An athermal lens is designed to maintain focus and image clarity even when ambient temperature changes. It compensates for thermal expansion, ensuring stable performance across -40°C to +80°C.
2. Why is the refresh rate only 25Hz instead of 60Hz?
Most uncooled LWIR thermal sensors are limited to 25Hz for export compliance and signal processing reasons. Despite this, they still provide smooth, real-time video output for UAV and surveillance use.
3. Can this module output HDMI or IP video instead of CVBS?
This version supports analog CVBS output. For digital or IP output, optional modules with HDMI or Ethernet interfaces can be customized.
4. Is this module suitable for drone integration?
はい. With its lightweight 38g design, wide voltage input (4.5–18V), and athermal optics, it is ideal for UAV payloads requiring stable imaging under rapid temperature changes.
5. What is the detection distance of 1.1km based on?
This distance refers to human target detection under standard atmospheric conditions using a 9.1mm lens. Actual performance may vary depending on humidity, 周囲温度, and target size.
6. 結論
ザ・ Mini-640-CVBS Thermal Module offers excellent compatibility with the customer’s specified requirements.
それは届けます high thermal sensitivity, 低消費電力, そして flexible interfaces in a 小型化された, 頑丈なデザイン.
With its robust VOx detector and athermal optics, it’s a perfect fit for 無人航空機, portable imaging devices, and security systems.
✅ Mini-640-CVBS fully meets your application needs, with minor differences in frame rate and temperature range that do not affect performance.
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