Light source apparatus

• US 10,039,169 B2
• Filed: 06/26/2017
• Issued: 07/31/2018
• Est. Priority Date: 12/28/2012
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chen, Tzung-Te, Lu, Chien-Chun, Tsai, Hsin-Yun, Liu, Tung-Yun, Wen, Shih-Yi
• Primary Examiner(s): Tran, Anh
• Application Number:
  US15/632,393
• Publication Number:
  US 20170325310A1
• Time in Patent Office: 400 Days
• Field of Search: None
• CPC Class Codes: H05B 45/20 Controlling the colour of the light
• CPC Class Codes: H05B 47/16 by timing means
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A light source apparatus including a light-emitting module and a control unit is provided. The light-emitting module is configured to provide a light. The control unit makes the light emitted from the light-emitting module switched among a plurality of kinds of first light. Correlated color temperatures of the plurality of kinds of first light are different from each other, and circadian action factors of the plurality of kinds of first light are substantially the same as each other.

Claims

1. A light source apparatus, comprising:

a light-emitting module, configured to provide a light; and

a control unit, making the light emitted from the light-emitting module switched among a plurality of kinds of first light, wherein correlated color temperatures of the plurality of kinds of first light are different from each other, and circadian action factors of the plurality of kinds of first light are substantially the same as each other.

2. The light source apparatus according to claim 1, wherein each of Duv values of the plurality of kinds of first light is less than 0.005.

3. The light source apparatus according to claim 1, wherein the control unit also makes the light emitted from the light-emitting module switched among a plurality of kinds of second light, wherein correlated color temperatures of the plurality of kinds of second light are different from each other, and color rendering indices of the plurality of kinds of second light are substantially the same as each other.

4. The light source apparatus according to claim 3, wherein each of Duv values of the plurality of kinds of second light is less than 0.005.

5. The light source apparatus according to claim 1, wherein the control unit also makes the light emitted from the light-emitting module switched among a plurality of kinds of third light, wherein correlated color temperatures of the plurality of kinds of third light are substantially the same as each other, and color rendering indices or circadian action factors of the plurality of kinds of third light are different from each other.

6. The light source apparatus according to claim 5, wherein each of Duv values of the plurality of kinds of third light is less than 0.005.

7. The light source apparatus according to claim 5, wherein the light-emitting module comprises a plurality of light emitters respectively emitting sub-lights with different wavelength ranges, the sub-lights form the light provided by the light-emitting module, the light emitted from the light-emitting module are switched among the plurality of kinds of first light and the plurality of kinds of third light by changing proportions of the sub-lights.

8. The light source apparatus according to claim 1, wherein the control unit also makes the light emitted from the light-emitting module switched among a plurality of kinds of fourth light, circadian action factors of the plurality of kinds of fourth light cover or are substantially the same as circadian action factors of sunlight within a correlated color temperature range.

9. The light source apparatus according to claim 8, wherein the correlated color temperature range comprises a range of 3000 K to 6500 K.

10. The light source apparatus according to claim 9, each of the color rendering indices of the plurality of kinds of fourth light is greater than 80.

11. The light source apparatus according to claim 8, wherein each of Duv values of the plurality of kinds of fourth light is less than 0.005.

12. The light source apparatus according to claim 8, wherein the light-emitting module comprises a plurality of light emitters respectively emitting sub-lights with different wavelength ranges, the sub-lights form the light provided by the light-emitting module, the light emitted from the light-emitting module are switched among the plurality of kinds of first light and the plurality of kinds of fourth light by changing proportions of the sub-lights.

13. The light source apparatus according to claim 1, wherein the light-emitting module comprises a plurality of light emitters respectively emitting sub-lights with different wavelength ranges, and the sub-lights form the light provided by the light-emitting module.

14. The light source apparatus according to claim 13, wherein the light-emitters comprise an electroluminescent light-emitting element, a light-induced light-emitting element or a combination thereof.

15. The light source apparatus according to claim 14, wherein the electroluminescent light-emitting element is a light-emitting diode chip, and the light-induced light-emitting element is phosphor.

16. The light source apparatus according to claim 13, wherein the light emitted from the light-emitting module are switched among the plurality of kinds of first light by changing proportions of the sub-lights.

17. The light source apparatus according to claim 16, wherein the proportions of the sub-lights are changed by pulse width modulation of the light emitters.

18. The light source apparatus according to claim 13, wherein the light-emitters comprise a plurality of light-emitting diode chips, and a full width at half maximum of each of sub-lights emitted by the light-emitting diode chips is less than 40 nanometers.

19. The light source apparatus according to claim 13, wherein the sub-lights are visible lights.