pinhole camera

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Related to Pinhole lens: Pinhole Photography

pinhole camera

n
(Photography) a camera with a pinhole as an aperture instead of a lens
References in periodicals archive ?
The mini cameras are equipped with a fixed focal length, available with flat (LTV CSB-302 02 ), conical pinhole lens (LTV CSB-301 02) or glass lens (LTV CSB-300 02).
Hidden in the unit is a camera with a choice of a 3.6-mm or a 5-mm pinhole lens. When motion is detected, it can trigger other security functions such as video recording and alarms.
The machine is linked to a hi-tech pinhole lens hidden in the lining of his lapel.
The system includes a high-quality leather attache case with a black-and-white CCD camera, a 4 mm to 20 mm zoom pinhole lens, an 8 mm recorder with a time and date generator, a video motion detector, a flat four-inch monitor, and a battery pack and charging system.
The camera has a 3.7mm pinhole lens, 380 TV lines of horizontal resolution with a light sensitivity of 0.4 lux, and a 90-degree field of view.
demonstrated its latest products in CCTV lens technology, including a 34X 5.5-187 zoom lens and a 2.5 mm wide-angle pinhole lens. Attendees who stopped by the booth picked up a free CCTV lens range calculator, which can help security professionals calculate the proper lens focal length for a specific CCTV application.
The hole in the barrier is usually chosen to have the same or smaller diameter (d) than the pinhole lens front lens element.
When the pinhole lens front element is set back from the barrier surface, the lens is, in effect, viewing through a tunnel, and the image has a narrower FOV than the lens can produce.
A pinhole lens having a small front diameter is simple to install.
Covert security applications typically use a standard pinhole lens. Most pinhole lenses are designed for 1/3-inch, l/2-inch, or 2/3-inch format cameras and have a manual- or automatic-iris control to adjust the light level reaching the camera.