Combined light emitting discharge lamp and luminaire using such lamp

A discharge lamp comprising:

• a blue emitting phosphor, a green emitting phosphor, and a red emitting phosphor, wherein excitation of the blue, green, and red emitting phosphors generates visible light so that visible light radiated from the discharge lamp comprises the following lights combined:
• light having an emission peak in a 400 to 490 nm wavelength range in a blue spectral region;
• light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region;
• and light having an emission peak in a 600 to 670 nm wavelength range in a red spectral region,
• wherein a color point of the radiated light lies within a region bounded by lines connecting four color points (u, v)=(0.235, 0.342), (0.252, 0.345), (0.248, 0.338), and (0.239, 0.334) in the CIE 1960 UCS diagram.

A discharge lamp comprising:

• a blue emitting phosphor, a green emitting phosphor, and a red emitting phosphor, wherein excitation of the blue, green, and red emitting phosphors generates visible light so that visible light radiated from the discharge lamp comprises the following lights combined:
• light having an emission peak in a 400 to 490 nm wavelength range in a blue spectral region;
• light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region;
• and light having an emission peak in a 600 to 670 nm wavelength range in a red spectral region,
• wherein a color point of the radiated light lies within a region common to the following regions:
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.056, a minor axis of 0.024, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.078, a minor axis of 0.014, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.235, 0.335) as a center thereof, a major axis of 0.060, a minor axis of 0.030, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.225, 0.330) as a center thereof, a major axis of 0.060, a minor axis of 0.018, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• and
• a region bounded by lines connecting four color points:
• (u, v)=(0.235, 0.342), (0.252, 0.345), (0.248, 0.338), and (0.239, 0.334) in the CIE 1960 UCS diagram.

A luminaire comprising at least one selected from the group consisting of a transmitting plate and a reflecting plate for radiating illumination light, the luminaire comprising a discharge lamp including a blue emitting phosphor, a green emitting phosphor, and a red emitting phosphor, wherein excitation of the blue, green, and red emitting phosphors generates visible light comprising the following lights combined:

• light having an emission peak in a 400 to 490 nm wavelength range in a blue spectral region;
• light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region;
• and light having an emission peak in a 600 to 670 nm wavelength range in a red spectral region,
• wherein a color point of the illumination light lies within a region common to the following regions:
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.056, a minor axis of 0.024, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.078, a minor axis of 0.014, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.235, 0.335) as a center thereof, a major axis of 0.060, a minor axis of 0.030, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.225, 0.330) as a center thereof, a major axis of 0.060, a minor axis of 0.018, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• and
• a region on a side of color temperature lower than an isotemperature line of a correlated color temperature of 3500 K.

A luminaire comprising at least one selected from the group consisting of a transmitting plate and a reflecting plate for radiating illumination light, the luminaire comprising a discharge lamp including a blue emitting phosphor, a green emitting phosphor, and a red emitting phosphor, wherein excitation of the blue, green, and red emitting phosphors generates visible light comprising the following lights combined:

• light having an emission peak in a 400 to 490 nm wavelength range in a blue spectral region;
• light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region;
• and light having an emission peak in a 600 to 670 nm wavelength range in a red spectral region,
• wherein a color point of the illumination light lies within a region bounded by lines connecting four color points (u, v)=(0.235, 0.342), (0.252, 0.345), (0.248, 0.338), and (0.239, 0.334) in the CIE 1960 UCS diagram.

A luminaire comprising at least one selected from the group consisting of a transmitting plate and a reflecting plate for radiating illumination light, the luminaire comprising a discharge lamp including a blue emitting phosphor, a green emitting phosphor, and a red emitting phosphor, wherein excitation of the blue, green, and red emitting phosphors generates visible light comprising the following lights combined:

• light having an emission peak in a 400 to 490 nm wavelength range in a blue spectral region;
• light having an emission peak in a 500 to 550 nm wavelength range in a green spectral region;
• and light having an emission peak in a 600 to 670 nm wavelength range in a red spectral region,
• wherein a color point of the illumination light lies within a region common to the following regions:
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.056, a minor axis of 0.024, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.224, 0.330) as a center thereof, a major axis of 0.078, a minor axis of 0.014, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.235, 0.335) as a center thereof, a major axis of 0.060, a minor axis of 0.030, and an angle from the u axis of 30 degrees in the CIE 1960 UCS diagram;
• a region bounded by an ellipse with a color point (u, v)=(0.225, 0.330) as a center thereof, a major axis of 0.060, a minor axis of 0.018, and an angle from the u axis of 20 degrees in the CIE 1960 UCS diagram;
• and
• a region bounded by lines connecting four color points:
• (u, v)=(0.235, 0.342), (0.252, 0.345), (0.248, 0.338), and (0.239, 0.334) in the CIE 1960 UCS diagram.