D-Link DCS-1100 - mydlink-enabled Wired Network Camera Uživatelský manuál stáhnout pdf (Strana 13)

Day & Night Solution

 Infrared LED is usually used for night surveillance, with camera set to allow

Infrared (IR) light pass thru sensor to get night vision

 Solution 1: With dual-band filter, cameras can be used during day time with

visible light as well as for night time with IR light (extra IR LED illuminator

required). This is the most entry level solution that can work in the day and

at night, but sometimes its side effect may affect picture color for day time.

 Solution 2: With ICR (Infrared-Cut Removable filter) module, it can use 2

filters for day and night time to provide better color performance, but at a

higher cost.

 Solution 3: Camera with built-in IR LED for illumination and dual-band or

ICR filter to provide advanced functionality, usually known as an all-in-one

camera.

Major Features of IP Surveillance Solution

• Network Camera/Video Server

Day & Night Solution – Dual Band

 Dual band coating to allow

visible light and IR

illumination to pass through.

 Problem of dual band coating

• Sensors respond to both

visible light and infrared

light

• White balance algorithm

will be affected by the

infrared

• Image have color

problem in strong IR light

environment

Major Features of IP Surveillance Solution

• Network Camera/Video Server

Filter

glass.

Day & Night Solution - ICR

 ICR (IR-Cut Removable) Lens

• Remove IR-cut filter during night time will give best results

• True day and night

• But more expensive

Major Features of IP Surveillance Solution

• Network Camera/Video Server

ICR Lens Module

With ICRWithout ICR

Day & Night Solution – IR Camera

 Structure of IR Camera

• With condenser, the distance of IR can reach up to two times further than

without.

Major Features of IP Surveillance Solution

• Network Camera/Video Server

Optical Condenser

IR LED

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