Light measuring system

Patent metadata

Field	Value
Publication number	US-9702757-B2
Application number	US-201514804613-A
Country	US
Kind code	B2
Filing date	Jul 21, 2015
Priority date	Dec 18, 2014
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

A light measuring system including an integrating sphere having an aperture configured by opposing reflectors selectively aligned with complementary reflectors of at least one light source mounting block having a light source mounting region for mounting a light source thereon.

First claim

What is claimed is:

1. A light measuring system comprising:
an integrating sphere comprising an aperture;
a support part comprising at least one light source mounting block having a light source mounting region configured to mount a light source thereon, the support part configured to align the light source mounting region with the aperture of the integrating sphere;
a light meter configured to measure a light characteristic of light emitted by the light source; and
a reflector disposed between the aperture of the integrating sphere and the light source mounting block, the reflector comprising a plurality of reflector plates arranged around the light source mounting region,
wherein the plurality of reflector plates comprises:
a pair of first reflector plates opposing each other and mounted on the light source mounting block, the pair of first reflector plates being arranged in a first direction that is a direction of movement of the light source mounting block, and the light source mounting region being interposed between the pair of first reflector plates; and
a pair of second reflector plates opposing each other and mounted on the integrating sphere, the pair of second reflector plates being arranged in a second direction perpendicular to the first direction, and the aperture being interposed between the pair of second reflector plates.

2. The light measuring system of claim 1 , wherein the pair of first reflector plates and the pair of second reflector plates are configured to allow for a movement path of the light source mounting block.

3. The light measuring system of claim 1 , wherein the first reflector plates are mounted on the light source mounting block at an angle inclined toward the integrating sphere.

4. The light measuring system of claim 1 , wherein the second reflector plates are extended from the integrating sphere to the support part, and
wherein the second reflector plates are mounted on the integrating sphere at an angle such that a distance between the second reflector plates at a point of mounting to the integrating sphere is less than a distance between distal ends of the second reflector plates.

5. The light measuring system of claim 1 , wherein a distance between the second reflector plates is greater than widths of the first reflector plates.

6. The light measuring system of claim 1 , wherein the support part comprises a plurality of light source mounting blocks, the support part configured such that light source mounting regions of respective light source mounting blocks are sequentially aligned with the aperture of the integrating sphere.

7. The light measuring system of claim 6 , wherein the support part further comprises a rotatably driven rotating body, and the plurality of light source mounting blocks are radially arranged in a circumferential portion of the rotating body.

8. The light measuring system of claim 6 , further comprising a driving device connected to the rotating body and configured to rotate the rotating body to align the light source mounting regions of respective light source mounting blocks with the aperture of the integrating sphere.

9. The light measuring system of claim 1 , wherein the light source comprises a light emitting diode (LED) chip or an LED package in which the LED chip is mounted.

10. The light measuring system of claim 9 , wherein the light source further comprises a wavelength conversion layer covering the LED chip.

11. A light measuring system comprising:
an integrating sphere comprising an aperture;
a support part comprising a plurality of light source mounting blocks respectively comprising light source mounting regions configured to mount a light source thereon, the support part configured to move the plurality of light source mounting blocks along a first direction and align the respective light source mounting regions with the aperture of the integrating sphere;
a light meter configured to measure a light characteristic of light emitted by the light sources; and
a reflector comprising:
first reflector plates disposed in each of the plurality of light source mounting blocks and arranged in the first direction; and
second reflector plates disposed on the integrating sphere around the aperture and arranged in a second direction perpendicular to the first direction.

12. The light measuring system of claim 11 , wherein the first reflector plates and the second reflector plates are separated from each other.

13. A light measuring system comprising:
an integrating sphere, the integrating sphere comprising an aperture, the aperture comprising a first pair of opposing reflectors extending from the integrating sphere at an angle and converging towards each other;
a light source mounting block comprising:
a second pair of opposing reflectors extending from the light source mounting block at an angle and diverging away from each other; and
a light source mounted between the second pair of opposing reflectors,

wherein parallel edges of the first pair of opposing reflectors selectively align with parallel edges of the second pair of opposing reflectors.

14. The light measuring apparatus of claim 13 , further comprising:
a circular support configured to be rotated about a central axis,
wherein the light source mounting block is mounted to the circular support.

15. The light measuring apparatus of claim 14 , wherein the light source mounting block comprises:
a first light source mounting block mounted to the circular support at a first position, the first light source mounting block comprising:
one second pair of the opposing reflectors extending from the first light source mounting block and converging towards each other; and
a first light source mounted between the one second pair of the opposing reflectors of the first light source mounting block; and

a second light source mounting block mounted to the circular support at a second position, the second light source mounting block comprising:
one second pair of opposing reflectors extending from the second light source mounting block and converging towards each other; and
a second light source mounted between the one second pair of the opposing reflectors of the second light source mounting block.

16. The light measuring apparatus of claim 15 , further comprising:
a motor configured to rotate the circular support about the central axis of the circular support to sequentially align:
the one second pair of the opposing reflectors of the first light source mounting block with the first pair of opposing reflectors, the aligned one second pair of the opposing reflectors of the first light source mounting block and the first pair of opposing reflectors substantially enclosing the first light source; and
the one second pair of the opposing reflectors of the second light source mounting block with the first pair of opposing reflectors, the aligned one second pair of the opposing reflectors of the second light source mounting block and the first pair of opposing reflectors substantially enclosing the second light source.

17. The light measuring apparatus of claim 16 , further comprising:
a light meter configured to measure at least one light characteristic of:
light emitted into an interior surface of the integrating sphere via the aperture by the first light source when the one second pair of the opposing reflectors of the first light source mounting block are aligned with the first pair of opposing reflectors; and
light emitted into the interior surface of the integrating sphere via the aperture by the second light source when the o

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Joon Sub
• Park Seung Won

Classifications

• G01J2001/4252

  for testing LED's · CPC title

• G01J2001/062

  by fibre-optic packed bundle · CPC title

• G01J2001/061

  Baffles · CPC title

• G01J2001/0481

  Preset integrating sphere or cavity · CPC title

• G01J3/0254

  Spectrometers, other than colorimeters, making use of an integrating sphere · CPC title