Over the last? Res ann? Are we assist? ? the appearance of the journ? e cam? flush night surveillance, all dowry? are a “miracle” capacity? ? amplified by several hundred folds of the cam? ra “minimum illumination” by the removal of IR filter and? dyeing circuit color. Usually, the sensitivity? mode varies from day one? 0 lux. 25 lux and jumps? 0. 01 ~ 0. 0001 lux for the night of the camera (B / W) mode. This “miracle” increase is not true, it is a measuring device by exposing the CCD (Charged Coupled Device)? High power ‘? mission infrared pr? cisant wrong? value tr? s low lux. Lux and the infrared power are not the m? My. Lux is a unit? photometer? metric that measures the point? point? lighting (depending on the quantity? the light for irradiated? e and the distance between the light source and object? clear?) while the infrared power is a unit? Radiom? cudgel – measured? e Watts. Enlightenment, it is possible for us to see any infrared radiation is invisible? the human eye. The distinction between? Lighting and infrared radiation in the en? Sequences, or the wavelength. The wavelength of the visible spectrum s’? Tends 400 nm (violet)? 700nm (red) which is divided into a rainbow of colors from red? orange? yellow? green to blue and violet. CIE (International Commission on Illumination) also known as the International Commission for the? Lighting, clearly indicated? measuring the light? re, known as the photometer? sorts, only applies? the visible light spectrum and includes common? s such as slow light? re, candle and lux. Measurements of the man ‘? He d? Protection capacity? showed? the efficiency? is the most? lev? e? color green (100%? about 555 nm) and it decreases? 50% pr? S Orange (about 610 nm) and blue (about 510 nm) and less than 10% pr? S red (around 650 nm) and violet (around 470 nm). The? Human beings can not feel waves radiated? Are in the ultraviolet (below 400 nm) or infrared (sup? Interior? 700 nm) r? Regions. ICE standards are quite complex, but suffice to understand that the value of a source the light for green (555nm) with 1W Lumen is? scabies? 683 lumens, which from a point of measuring point is? Scabies? 683 Candela. In contrast, 1W red (650 nm) light output is? Gal? only 68 and 68 candela lumen and 1W-infrared (700 nm) light radiant flux? re is? scabies? 0, 0 and 0 lux candela. The problem? Me is that few people know what lux and infrared radiation are, or how? Lighting and radiation are measured? S. One device for measuring the? Lux lighting is the? Clearly m? Very,? Also known as a photometer? Be. The meter the light for includes a filter and is stallions? to measure only unit? s the light for the visual spectrum of optics such as? finished by the CIE. This filter is similar to the IR cut filter emp? Loved one to pass infrared radiation in order to maintain the pr? Measurement accuracy. That’s why all the counters of known exposure luxm: station and? Lighting of the? Equipment Measuring read or 0 lux? an r? sidual when exposed to infrared radiation. In CCTV m station with light? Re are used? S to measure the illumination of the sc? Not observed? E by a cam? Ra of the container dimensions, but should never? Be used? to measure the infrared radiation, because its reading will be 0 lux, or r? SIDU as 0. 001 lux, whereas the sc? Can? Be expos? ? of quantity? s whatever they want saddles of infrared radiation. To understand tr? Full well the impact that these measures? design a system? CCTV me we must first understand how a CCD (Charged Coupled Device) works. The CCD is stupid? U to like? human eye, with colors similar to? protection of effectiveness?. Therefore, the CCDs are more sensitive to green (550 nm) r? Region of the spectrum and decrease the sensitivity? ? 0 in the ultraviolet (400 nm) r? Region. CCDs, however, no longer feel the infrared and 700nm? 1000nm (some are more sensitive and can d? Detect up? 1200nm). The sensitivity? CCD is much lower in the r? IR region and efficacy? fall? only 5-10% or less, as the chart shows typical CCD performance. M? Me if the efficiency? d? sensor protection in the r? infrared region is very? s low during the journ? e infrared radiation which is strongly radiated? e by the sun, hot objects, the human body or incandescent? halogen? should? be emp? ch? s to reach the CCD color. If IR is radiated? E in the optical path of a color CCD, it disruptive heavy processing images in color. Therefore, all the colors (or CMOS) sensor is CCD? Very? Quip? an IR cut filter that blocks infrared radiation to reach. As explained? above, the sensors are much less sensitive to infrared radiation that the visual spectrum. By stupid? Fore, the notion that the suppression of anti-IR filter increases the sensitivity? the apparatus of a hundred or a thousand times is a simple case of the distortion induced by wrongful use of a photometer? be to measure the infrared radiation. The common test inaccurate for the night mode of a cam? Ra Day / Night is performed? by introducing a powerful infrared radiator (improperly call? e IR illuminator) to the infrared radiation on a si? sank. The test is r? Alis? connecting a cam? ra CCTV (with IR cut filter removed? e)? a waveform analyzer to measure the output signal. The cam? Ra day / night is placed? to observe a si? do infrared irradiated? s. Apr? S that posem? Is positioned be? On e si? Not to measure the infrared radiation in lux. This is a test that misleading g? N? Of re r? Erron results? S. We will obtain an IR-induced B / W signal in the waveform analyzer with a value such as 20 IRE, while posem? Very read 0 lux or an r? Sidual as 0. 01 ~ 0. 0001 lux, which is used? in the data sheet of the camera? finish the sensitivity? or his? minimum lighting. You? Be aware that the IRE is a unit? signal level or strength and is not associated? ? infrared radiation in any fa? it. Good, but more “? Hard evidence” school of sensitivity? a cam? ra surveillance or? minimum lighting is performed? in pla? ant a standard source 2000 lux with a focus in front of the cam? ra (religious?? analyzer waveform) with IR cut filter removed?. Apr? S the initial registration are ins? R?’re Facing source the light for up? the signal vid? o measured? e fall? 20 IRE. The? Minimum lighting of being very calculating? on a factor of r? reduction of the density? neutral density filter. Neutral density filters are available in diff? Different factors of transmission and r? Reduce the intensity? light by ratios such as?, 1 / 16, 1 / 50, 1 / 100 etc. The density filters? are very neutral? s like? those used? s in the objectives? auto iris? chip. That’s why whenever you see one cam? Ra day / night with? Minimum lighting values as 0. 001 lux or 0 m? Me. 001 lux, try to keep? one thing in mind – the strat? gies marketing, sometimes more weight than common sense.