Light emitting device
First Claim
Patent Images
1. A light emitting device, comprising:
- a light emitting element that emits light with a predetermined wavelength; and
a sealing portion that seals the light emitting element, wherein the light emitting element is provided with a stress reducing portion that reduces an internal stress in the sealing portion.
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Abstract
A light emitting device has: a light emitting element; a lead that is electrically connected to the light emitting element at its one end and serves as a terminal to supply a power source to the light emitting element; a metal base that the light emitting element is mounted thereon and radiates heat of the light emitting element; and a sealing member that is of transparent resin or glass and covers the light emitting element. The lead is secured to the metal base by a heat-resisting insulating member with a thermal expansion coefficient nearly equal to that of the metal base.
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Citations
29 Claims
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1. A light emitting device, comprising:
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a light emitting element that emits light with a predetermined wavelength; and
a sealing portion that seals the light emitting element, wherein the light emitting element is provided with a stress reducing portion that reduces an internal stress in the sealing portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light emitting device, comprising:
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a light emitting element;
a lead that is electrically connected to the light emitting element at its one end and serves as a terminal to supply a power source to the light emitting element;
a metal base that the light emitting element is mounted thereon and radiates heat of the light emitting element; and
a sealing member that is of transparent resin or glass and covers the light emitting element, wherein the lead is secured to the metal base by a heat-resisting insulating member with a thermal expansion coefficient nearly equal to that of the metal base. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 29)
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16. A light emitting device, comprising:
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an optical element;
a submount that the optical element is mounted thereon and has a thermal expansion coefficient nearly equal to that of the optical element;
a support member that is provided with a hole into which the submount is inserted, and has a thermal expansion coefficient greater than that of the submount; and
a transparent sealing member that seals the optical element and is transparent to a targeted wavelength, wherein the submount is disposed such that its surface to mount the optical element is exposed from the hole on the side of the sealing member, and is bonded to the support member and the transparent sealing member to seal the optical element. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification