he-ne laserwavelength

The RISE 4260HD PTZ IP video camera, designed and built by CohuHD Costar for transportation applications demanding high-quality video, rugged construction and seamless interoperability.

The 3960HD includes defog/dehaze* image processing, enhancing video performance in foggy and hazy conditions encountered in surveillance and traffic monitoring applications.

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The 3960HD provides a full function web server, allowing complete administrative and operator control capabilities. Administrative features include configuring network settings, user password assignments, setting video streaming properties, configuring camera imaging properties, defining presets and tours, and assigning camera ID labels.

A helium-neon laser is based on a tube filled with a mixture of helium and neon gas. An electrical glow discharge excites helium atoms, which transfer their energy to neon atoms during the collisions. Neon has several laser transitions, the most popular being in the red spectral region at 632.8 nm, with others at 1.15 µm, 543.5 nm (green), 594 nm (yellow), 612 nm (orange), and 3.39 µm. A particular wavelength is selected by using suitable resonator mirrors. Due to the low laser gain, the resonator loss has to be small, typically below 1%.

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Iodine stabilizedHe-Ne laser

The 3960HD includes a choice of 720p30 or 1080p30 HD cameras with up to 30x* optical zoom, delivering full frame rate HD images over the entire zoom range.

The 3960HD includes variable hi-speed pan and tilt drive, with 360° continuous pan and +90 to -90° tilt. Fast positioning speeds result in 180° movements in less than 2.5 seconds.

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The built-in zoom capability enables up to 30x optical magnification in high definition, and achieves quick subject tracking through its high speed auto focusing system.

The 2740 / 2750 Series provides low light level exterior surveillance at a competitive price.  By day, it is a high performance monochrome camera of impressive specification.  But at night, dual-gain circuitry takes over to provide near Gen-1 low light level performance.  The camera and lens are enclosed in Cohu legendary sealed and pressurized enclosure for long and reliable operation

The 3960HD is designed to operate in harsh weather with its IP67 enclosure protection. This eliminates the effects of water intrusion, pollutants and corrosives.

Providing multiple video stream capability, the 3960HD delivers two independently configured H.264 streams or an H.264 with MJPEG or an H.264 with analog output. Use of the IP and analog output allows integrating with analog systems today while providing a smooth transition to HD Video over IP tomorrow.

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Typical HeNe lasers have a gas cell with a length of roughly 20 cm, and they can generate a few milliwatts of output power in continuous-wave operation at 632.8 nm, using several watts of electrical power. The beam quality is usually excellent.

Helium-neon lasers, particularly the standard devices operating at 632.8 nm, are often used for alignment purposes and are competing with laser diodes, which are more compact and efficient but have less convenient beam properties.

He Ne laserfrequency

For installations subject to wind or vibration, electronic image stabilization* assures steady, clear images and enables the system designer to utilize existing bridge sign and traffic light poles for camera mounting.

The above setup is based on a glass tube that could be used with different mirror sets and is terminated with Brewster windows. Low-cost devices often have internal mirrors that cannot be exchanged.

CohuHD’s 3960HD camera positioning system combines crystal clear HD image quality, bandwidth efficient H.264 compression, smooth variable speed positioning and IP66/IP67 protection delivering the CohuHD quality and performance you expect! Cohu Helios™ 3960HD