LED-based white-light lighting module for preventing glare and providing adjustable color temperature

• US 7,931,517 B2
• Filed: 02/25/2009
• Issued: 04/26/2011
• Est. Priority Date: 02/25/2009
• Status: Expired due to Fees

• Current Assignee: Joe Yang
• Original Assignee: Joe Yang
• Inventors: Yang, Joe, Yang, Kai-Ming
• Primary Examiner(s): Ton; Toan
• Assistant Examiner(s): FEATHERLY, HANA SANEI
• Application Number:
  US12/380,188
• Publication Number:
  US 20100216364A1
• Time in Patent Office: 790 Days
• Field of Search: 445 24- 25
• US Class Current: 445/24
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21Y 2113/13 comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed is an illuminative module for enhancing the white balance while reducing thermal drift and color blocks. The illuminative module includes a substrate and light-emitting elements provided on the substrate to emitting light of the primary colors and a fourth color, respectively, so that the light of the primary colors is mixed with the light of the fourth color to provide white light.

Claims

1. A method for making a lighting module for preventing glare and providing adjustable color temperature comprising the steps of:

providing a carrier;

connecting red light-emitting diode packages to the carrier, each of the red light-emitting diode packages comprising a red light-emitting diode chip, a cover for covering the red light-emitting diode chip and scattering particles scattered in the cover;

connecting green light-emitting diode packages to the carrier, each of the green light-emitting diode packages comprising a green light-emitting diode chip, a cover for covering the green light-emitting diode chip and scattering particles scattered in the cover; and

connecting blue light-emitting diode packages to the carrier, each of the blue light-emitting diode packages comprising a blue light-emitting diode chip, a cover for covering the blue light-emitting diode chip and scattering particles scattered in the cover, wherein the numbers and positions of all of the light-emitting diode packages on the carrier are changeable to adjust the color temperature of light emitted from the lighting module and therefore prevent glare;

providing a cover for covering the red light-emitting diode packages, the green light-emitting diode packages and the blue light-emitting diode packages.

2. The method according to claim 1, wherein the carrier comprises at least one printed circuit board.

3. The method according to claim 1 further comprising the step of providing a scattering panel extending parallel to the carrier so that the scattering panel is at a same distance from the light-emitting diode packages, the scattering panel comprising a transparent panel and scattering particles scattered in the transparent panel.

4. The method according to claim 1 further comprising the step of providing an enhancing panel extending parallel to the carrier for concentrating the light so that the light travels further than without the enhancing panel.

5. The method according to claim 1 further comprising the step of providing at least one compensating light-emitting diode package connected to the carrier, wherein the compensating light-emitting diode package comprising a light-emitting diode chip for emitting light of a four color, a cover provided for covering all of the light-emitting diode chip and scattering particles scattered in the cover.

6. The method according to claim 5, wherein the compensating light-emitting diode package emits light with wavelength of 560 to 610 nm.

7. The method according to claim 5, wherein the compensating light-emitting diode package emits light with wavelength of 470 to 500 nm.

8. A method for making a lighting module for preventing glare and providing adjustable color temperature comprising the steps of:

providing a carrier;

connecting red light-emitting diode chips to the carrier;

connecting green light-emitting diode chips to the carrier;

connecting blue light-emitting diode chips to the carrier; and

providing at least one cover for covering all of the light-emitting diode chips, scattering particles scattered in the at least one cover, wherein the numbers and positions of the light-emitting diode chips on the carrier are changeable to adjust the color temperature of light emitted from the lighting module and therefore prevent glare.

9. The method according to claim 8, wherein the carrier comprises at least one printed circuit board.

10. The method according to claim 8, wherein the step of providing at least one cover provides three covers respectively covering a related red light-emitting diode chips, green light-emitting diode chips and blue light-emitting diode chips.

11. The method according to claim 8, wherein the step of providing at least one cover provides a cover for covering all of the light-emitting diode chips.

12. A method for making a lighting module for preventing glare and providing adjustable color temperature comprising the steps of:

providing a carrier;

connecting red light-emitting diode chips to the carrier;

connecting green light-emitting diode chips to the carrier;

connecting blue light-emitting diode chips to the carrier;

connecting at least one compensating light-emitting diode chip to the carrier; and

providing at least one cover for covering all of the light-emitting diode chips, scattering particles scattered in the at least one cover, wherein the numbers and positions of the light-emitting diode chips on the carrier are changeable to adjust the color temperature of light emitted from the lighting module and therefore prevent glare.

13. The method according to claim 12, wherein the carrier comprises at least one printed circuit board.

14. The method according to claim 12, wherein the step of providing at least one cover for respectively covering a related red light-emitting diode chips, green light-emitting diode chips, blue light-emitting diode chips and the at least one compensating light-emitting diode chip.

15. The method according to claim 12, wherein the step of providing at least one cover provides a cover for covering all of the light-emitting diode chips.