JP-7856917-B2 - light source device

Inventors

• ▲吉▼田 典正
• 松岡 真也
• 岡 祐太

Assignees

• 日亜化学工業株式会社

Dates

Publication Date

20260512

Application Date

20241127

Priority Date

20210405

Claims (10)

1. A light-emitting unit assembly comprising a first light-emitting unit having a first light-emitting element, and a second light-emitting unit having a plurality of second light-emitting elements, wherein in a plan view, the second light-emitting units surround the first light-emitting unit, The assembly comprises a lens arranged on the aforementioned light-emitting unit, The first light-emitting unit and the second light-emitting unit can each be controlled to light up independently. The optical axis of the lens overlaps with the first light-emitting part. The rate of change in the light distribution angle of the first light-emitting portion due to the lens is greater than the rate of change in the light distribution angle of the second light-emitting portion due to the lens. A light source device wherein the light distribution of the light emitted from the lens includes two or more light distribution patterns from among ultra-wide-angle distribution, wide-angle distribution, ultra- narrow-angle distribution, and narrow-angle distribution.
2. The light source device according to claim 1, wherein the light distribution pattern can be controlled by adjusting the output ratio of the first light-emitting unit and the second light-emitting unit.
3. The light source device according to claim 1 or 2, wherein the first light-emitting element and the plurality of second light-emitting elements are arranged in a matrix, and the plurality of second light-emitting elements are arranged adjacent to each other.
4. The second light-emitting element has a wavelength conversion member on the light-emitting surface side, The light source device according to any one of claims 1 to 3, wherein the wavelength conversion member is arranged to surround the outer periphery of the first light-emitting portion.
5. The second light-emitting element has a wavelength conversion member on the light-emitting surface side, The light source device according to any one of claims 1 to 4, wherein one of the wavelength conversion members is arranged to surround the outer periphery of the first light-emitting portion.
6. A light source device according to any one of claims 1 to 5, wherein, in a plan view, the light-emitting assembly is arranged within the area of the lens.
7. The light source device according to any one of claims 1 to 6, wherein the light from the first light-emitting unit and the second light-emitting unit has a color difference Δu'v' of 0.05 or less in the CIE 1976 (L*, u*, v*) color space.
8. The light source device according to any one of claims 1 to 7, wherein the lens is a Fresnel lens.
9. The light-emitting assembly comprises reflective members on the sides of the first light-emitting element and the plurality of second light-emitting elements, as described in any one of claims 1 to 8.
10. The light source device according to any one of claims 1 to 9 is a light source device that is a flash light source.

Description

This disclosure relates to a light source device. Patent Document 1 discloses an LED light-emitting device comprising a first light-emitting section and a second light-emitting section, each having a group of LED elements, formed concentrically on a circuit board, and lenses above the first and second light-emitting sections, wherein the first and second light-emitting sections are driven to light up independently. Japanese Patent Publication No. 2014-082236 This is a schematic plan view showing the configuration of the light source device of Embodiment 1.This is an end view of the line segment A-A in Figure 1A, schematically showing the configuration of the light source device of Embodiment 1.These are schematic plan views showing the first light-emitting section and the second light-emitting section of the light source device of Embodiment 1.This is a schematic plan view showing an configuration in which a second light-emitting unit, having at least two spaced light-emitting elements, surrounds a first light-emitting unit.This is a schematic end view showing the cross-section of the second light-emitting section along the line segments III-III and IV-IV in Figure 2B.This is a schematic bottom view of the light-emitting assembly.This is a schematic plan view showing a second light-emitting section having one light-emitting element arranged at a distance from the outer circumference of the first light-emitting section.This is a schematic end view showing the cross-section of the second light-emitting section along the line segment I-I in Figure 2E.This is a schematic end view showing the cross-section of the light-emitting assembly along line segment II-II in Figure 2E.This is a schematic end view showing the configuration of the light-emitting assembly (including the first and second light-emitting parts) before illumination.This is an end view schematically showing the behavior of the first light-emitting section when it is emitting light.This is an end view schematicly showing the configuration of the second light-emitting section when it is emitting light.This is a schematic end view showing the light distribution control method of the first light-emitting section using a Fresnel lens.This is a schematic end view illustrating the method of controlling the light distribution (ultra-wide-angle light distribution control) of the first light-emitting part using a Fresnel lens.This is a schematic end view illustrating the method of controlling the light distribution of the first light-emitting part using a Fresnel lens (ultra-narrow angle light distribution control).This is a schematic end view showing the light distribution control method of the second light-emitting section using a Fresnel lens.This is a schematic end view illustrating the method of controlling the light distribution (wide-angle light distribution control) of the second light-emitting section using a Fresnel lens.This is a schematic end view illustrating the method of controlling the light distribution (narrow-angle light distribution control) of the second light-emitting section using a Fresnel lens.This is a schematic plan view showing the configuration of the light source device of Embodiment 2.This is an end view of the line segment B-B in Figure 5A, schematically showing how the light distribution of the first and third light-emitting parts of the light-emitting unit assembly, each corresponding to one of the two Fresnel lenses, is controlled by the lenses.This is an end view of the line segment B-B in Figure 5A, schematically showing how the light distribution of the second and fourth light-emitting parts of the light-emitting unit assembly, corresponding to each of the two Fresnel lenses, is controlled by the lenses.This is a schematic plan view illustrating the preparation process for the wavelength conversion material sheet.This is an end view of the line segment 6a-6a in Figure 6A, schematically showing the preparation process for the wavelength conversion member sheet.This is a schematic plan view illustrating the process of separating wavelength conversion material sheets into individual pieces.This is an end view of the line segment 6b-6b in Figure 6C, schematically showing the process of separating the wavelength conversion member sheet into individual pieces.This is a schematic plan view illustrating the installation process of a light-emitting element.This is an end view of the line segment 6c-6c in Figure 6E, schematically illustrating the installation process of the light-emitting element.This is a schematic plan view illustrating the supply process for reflective material.This is an end view of the line segment 6d-6d in Figure 6G, schematically illustrating the supply process of the reflective material.This is a schematic plan view illustrating the grinding process for reflective material.This is an end view of the line segment 6e-6e in Figure 6I, schematically illustrating the grinding process of the reflective material