Wuhan JOHO Technology Co., Ltd
| Payment Terms | T/T, L/C |
| Supply Ability | 50Sets/Year |
| Delivery Time | 2months after received payment |
| Packaging Details | Standard Safety Equipment Case |
| Technology | Infrared |
| Style | Thermal Imaging Camera |
| Type | Continuous zoom EO IR Camera |
| Focus Length | 800~80mm continous zoom |
| Standard | GJB |
| Feature | Waterproof/Weatherproof |
| Effective distance | 30km(target:2.3m x 2.3m vehicle) |
| Applications | Navigation, Surveillance, Rescue |
| Brand Name | JOHO |
| Model Number | jh640-800 |
| Certification | ISO9001:2000 |
| Place of Origin | China |
View Detail Information
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Product Specification
| Payment Terms | T/T, L/C | Supply Ability | 50Sets/Year |
| Delivery Time | 2months after received payment | Packaging Details | Standard Safety Equipment Case |
| Technology | Infrared | Style | Thermal Imaging Camera |
| Type | Continuous zoom EO IR Camera | Focus Length | 800~80mm continous zoom |
| Standard | GJB | Feature | Waterproof/Weatherproof |
| Effective distance | 30km(target:2.3m x 2.3m vehicle) | Applications | Navigation, Surveillance, Rescue |
| Brand Name | JOHO | Model Number | jh640-800 |
| Certification | ISO9001:2000 | Place of Origin | China |
| High Light | long range thermal imaging camera ，infrared thermal imaging camera | ||
JH640-800 Cooled HgCdTe FPA Long Range Surveillance Thermal Camera RS232
1 Introduction
1.1 Principle
The common camera is an equipment of visible imaging. Its image-forming principle is based on the difference between reflect and reflectance on the target surface. But the infrared thermal camera is different totally, it utilized the thermal contrast difference between targets and surrounding environmental conditions to forming the thermal radiation energy density images, we call it as “thermal imaging”. As same as light wave and radio wave, the infrared radiation is a kind of electromagnetic wave. The wave band diagram refers to Figure 1.
Figure 1 Infrared wave band diagram
Because the human vision is not sensitive to infrared light, the thermal camera have to transform the infrared light to visible light and change the infrared image to visible image. As shown Figure 2, the function of transformer consists of 2 steps. Firstly, through the infrared thermal detector to transform the thermal radiations into electrical signals, which amplitude can reflect the strength of thermal radiation; Secondly, to display the electrical signals on monitor and get the visible infrared thermal image.
Figure 2 Principle of infrared imaging
JH640-800 long range surveillance thermal camera utilizes third generation HgCdTe 640x512 MWIR focal plane arrays (FPA) detector. The detector transform the target thermal radiations to electrical signals, after the process of a detailed analysis of electrical signals on image processing circuit boards, detector output analog and digital video signals together; the host PC control the thermal camera via RS232 communication interface. The basic principle diagram refers to Figure 3.
Figure 3 Principle of thermal camera
1.2 Features
JH640-800 long range surveillance thermal camera is a matured and high reliability product which developed by our company independently to meet military standard. To ensure the thermal camera can totally meet the military standard, we choose high-quality material and adopt top-ranking manufacture technology. Now the thermal camera has widely applied in the fields of aerospace, military industry, border & coast defense and city safety surveillance. This high-tech cooled infrared thermal camera is desperate needed in all-weather target detection, recognition and pre-warning system.
The thermal camera has advantages of small size, high sensitivity, easy to control, long surveillance range, continuous zoom (focal length is 80~800mm, the complete focusing movement time is not more than 6s), all weather operations, and good integration. It can be used as a single machine for monitoring, also can be integrated in the electro-optical pod used as forward looking infrared (FLIR) component.
Specifications:
| DETECTOR | |
| Detector | Cooled HgCdTe FPA |
| Pixel | A mode: 640X512 B mode: 320x256 |
| Spectral Range | A mode: 3.7μm~4.8μm B mode: 3.7μm~4.8μm/7.7μm~11.0μm |
| NETD | ≤25mK(at 25℃) |
| FPA Operating Temperature | 90K~120K |
| Cooling Type | Stirling Cycle Cooling |
| Cooling | ≤6min at 25ºC |
| OPTICS | |
| Focal Length | 80~800mm (continuous zoom) F#:4 |
| FOV | 6.87°×5.50°~0.69°×0.55°(H x V) |
| IMAGE DISPLAY | |
| Video Output | Analog Video: Standard PAL Frame Frequency:25Hz Digital Video:14bits LVDS |
| Brightness & Contrast | Auto/Manual Adjust |
| Polarity | BH&WH |
| COMMUNICATION INTERFACE | |
| Command and Control | RS232 |
| POWER SUPPLY | |
| Power Supply | 24VDC/1.5A |
| Wide Supply Range | 18V~36V |
| Power Consumption | ≤25w |
| ENVIRONMENTAL | |
| Operating Temperature | -40ºC~+60ºC |
| Storage Temperature | -50ºC~+70ºC |
| Vibration &Shock Proof | GJB150.16-86 /MIL-STD-810F-514.5 |
| High & Low Temperature Test | GJB 150.3-86 / MIL-STD-810F-514.5 |
| PHYSICAL | |
| Weight | ≤20kg |
| Size | 460mm x 230mm x 325mm(LxWxH) |
| Color | Oxide black |
| DETECTION RANGE | |
| Detection Range | 30km(target:2.3m x 2.3m vehicle) |
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2012
Total Annual:
10,000,000-20,000,000
Employee Number:
40~99
Ecer Certification：
Verified Supplier
Wuhan JOHO Technology Co., Ltd founded in 2009, is a high-technology company based on infrared thermal imaging technology. Joho has built a complete infrared industrial chain from the bottom up: from core component to comprehensive electro optical infrared surveillance and tracking system. O... Wuhan JOHO Technology Co., Ltd founded in 2009, is a high-technology company based on infrared thermal imaging technology. Joho has built a complete infrared industrial chain from the bottom up: from core component to comprehensive electro optical infrared surveillance and tracking system. O...
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