Two, background technology
Under the environment of no visible light, the viewable pictures of infrared viewing device obviously exceeds much than low-light level night vision device picture on brightness and sharpness.Infrared viewing device is not subjected to the restriction of illumination, can observe under the black full situation, and effect is fine, low price yet.And low-light level night vision device is natural lights such as the night sky light that utilizes the low-light level of target reflection at night, star moonlight, airglow, it is strengthened amplification, be suitable for the purpose that naked eyes are scouted night thereby reach, complete black situation is next can't operate as normal, and the low-light level night vision device manufacture craft is complicated especially, cost is high, price is higher relatively.
Three, summary of the invention
The objective of the invention is to improve the deficiency of prior art and provide a kind of with equipment integrations such as image acquisition, infraluminescence lamp plate to together, overall dimensions is small and exquisite, lightly easy, easy to use, cost is low, the head-wearing night viewer of clear picture.
The object of the present invention is achieved like this, a kind of head-wearing night viewer, form by the helmet and video camera, be characterized in that video camera is fixed on the top of the helmet, the front portion of the helmet is provided with infrared transmitting device, the infrared transmitting device below is fixed with display screen, controller control video camera, infrared transmitting device and display screen.
In order further to realize purpose of the present invention, can be before camera lens, to be provided with zoom lens.
In order further to realize purpose of the present invention, can be the matrix that infrared transmitting device is made up of infrared emission tube.
Compared with the prior art the present invention has following distinguishing feature and good effect: the present invention is the top that video camera is fixed on the helmet, the front portion of the helmet is provided with infrared transmitting device, the infrared transmitting device below is fixed with display screen, controller control video camera, infrared transmitting device and display screen, equipment such as image acquisition, infraluminescence lamp plate are integrated together cleverly, overall dimensions is small and exquisite, relatively complies with the light and handy easy trend of electronic product now.Directly night vision device being worn on head gets final product, the time spent does not take off, use more conveniently, utilize infrared ray, form luminophor by the infrarede emitting diode matrix as light emitting source, infrarede emitting diode is made PN junction by the high material of infrared radiation efficient, add forward bias and excite infrared light to the PN junction injection current, spectral power distribution is centre wavelength 850nm, about the about 40nm of half-peak bandwidth, it is that the arrowband distributes, but is the scope of special low-light (level) B sensitization.Its biggest advantage is that the life-span is long, and the infrared light transmitting range is far away.By the Infrared that the infraluminescence pipe is launched, reflected back the place ahead scene image by the image capture device collection, and then demonstrates image in image display.Before camera lens, be provided with zoom lens, adopt low-illuminance cameras simultaneously, image acquisition partly has focusing, becomes doubly, the adjustability of three parameters of aperture, minimal illumination reaches 0.0001LUX/F1.2, the CCD image sensor of video camera has very wide sensitization spectral range, and its sensitization spectrum not only comprises the visible region, also extends to region of ultra-red, do not have at night under the situation of visible illumination, make the imaging clearly of CCD image sensor with auxiliary infrared light supply illumination.Infrared light sensitivity is higher more than 4 times than general video camera, has that cost is low, the characteristics of clear picture.
Five, specific embodiments
Embodiment 1, a kind of head-wearing night viewer, with reference to Fig. 1, be to be fixed withvideo camera 2 on the top of thehelmet 1, the front portion of thehelmet 1 is provided withinfrared transmitting device 3, infrared transmittingdevice 3 belows are fixed withdisplay screen 4, andcontroller 5control video camera 2, infrared transmittingdevice 3 anddisplay screens 4 also transmit signal, and this constitutes a kind of structure of the present invention.
Embodiment 2, and a kind of head-wearing night viewer is with reference to Fig. 2; be on the basis ofembodiment 1, beforevideo camera 2 camera lenses, be provided withzoom lens 6, the matrix that infrared transmittingdevice 3 is made up of infrared emission tube; the outer protection screens that are provided with ofinfrared transmitting device 3, other andembodiment 1 are identical.