Apparatus and method for acquiring iris image outdoors and indoors

An apparatus for acquiring an iris image outdoors and indoors, the apparatus comprising:

• a lens for receiving the iris image;
• an image sensor for sensing the iris image received through the lens;
• a memory for storing the sensed iris image;
• a bandpass filter that passes exclusively parts of the outdoor iris wavelength band (920 nm to 1,500 nm) provided at a front stage of the image sensor in order to acquire the iris image, in which a reflected image generated upon photographing the iris image indoors and outdoors is prevented or reflection noise is reduced;
• and infrared lamps for emitting light having one or more wavelengths passing through a wavelength band of the bandpass filter,
• wherein the bandpass filter is provided at the front stage of the image sensor, and
• wherein the infrared lamps are used to acquire the iris image.

An apparatus for acquiring an iris image outdoors and indoors, the apparatus comprising:

• a lens for receiving the iris image;
• an image sensor for sensing the iris image received through the lens;
• a memory for storing the sensed iris image;
• a bandpass filter that passes exclusively parts of the outdoor iris wavelength band (920 nm to 1,500 nm) provided at a front stage of the image sensor in order to acquire the iris image, in which a reflected image generated upon photographing the iris image indoors and outdoors is prevented or reflection noise is reduced;
• a bandpass filter for passing a wavelength band of 700 to 900 nm for acquiring the iris image indoor;
• and
• infrared lamps for emitting light having one or more wavelengths passing through both wavelength bands of the different bandpass filters,
• wherein the parts of the outdoor iris recognition wavelength band (920 to 1,500 nm) include at least one of a wavelength band of 920 to 960 nm, a wavelength band of 1,110 to 1,160 nm and a wavelength band of 1,300 to 1,500 nm,
• wherein the bandpass filter is provided at the front stage of the image sensor, and
• wherein the infrared lamps are used to acquire the iris image.

A method of acquiring an iris image outdoors and indoors using an apparatus including a lens for receiving the iris image, an image sensor for sensing the iris image received through the lens, and a memory for storing the sensed iris image, the method comprising:

• selecting exclusively parts of an outdoor iris wavelength band (920 nm to 1,500 nm);
• emitting infrared light passing through the selected wavelength band;
• and acquiring the iris image, in which a reflected image generated upon photographing is prevented or reflection noise is reduced, using a bandpass filter using parts of the outdoor iris wavelength band (920 nm to 1,500 nm) provided at a front stage of the image sensor,
• wherein the parts of the outdoor iris recognition wavelength band (920 to 1,500 nm) include at least one of a wavelength band of 920 to 960 nm, a wavelength band of 1,110 to 1,160 nm and a wavelength band of 1,300 to 1,500 nm,
• wherein the step of acquiring the iris image comprises:
• providing the bandpass filter at the front stage of the image sensor, and
• using the infrared lamps to acquire the iris image.

A method of acquiring an iris image outdoors and indoors using an apparatus including a lens for receiving the iris image, an image sensor for sensing the iris image received through the lens, and a memory for storing the sensed iris image, the method comprising:

• selecting parts of an outdoor iris wavelength band (920 nm to 1,500 nm) upon photographing the iris image outdoors and acquiring the iris image;
• selecting a filter having a wavelength band of 700 nm to 900 nm upon photographing the iris image indoors and acquiring the iris image;
• and acquiring the iris image, in which a reflected image generated upon photographing is prevented or reflection noise is reduced, using a bandpass filter that passes exclusively parts of the outdoor iris wavelength band (920 nm to 1,500 nm) provided at a front stage of the image sensor upon photographing the iris image outdoors,
• wherein the parts of the outdoor iris recognition wavelength band (920 to 1,500 nm) include at least one of a wavelength band of 920 to 960 nm, a wavelength band of 1,110 to 1,160 nm and a wavelength band of 1,300 to 1,500 nm,
• wherein the step of acquiring the iris image comprises:
• providing the bandpass filter at the front stage of the image sensor, and
• using the infrared lamps to acquire the iris image.