Light-emitting device and lid body used in light-emitting device
A light-emitting device includes: a package body; a lid body connected to the package body, wherein the package body and the lid body together form a sealed space; and a plurality of light-emitting elements disposed in the sealed space. The lid body includes: a non-transmissive member including an outer frame, and one or more inner frames connected to the outer frame, wherein the outer frame and the one or more inner frames define a plurality of openings, a transmissive member integrally covering the plurality of openings and configured to allow light emitted from the plurality of light-emitting elements to be transmitted through the plurality of openings, and an adhesive member fixing the transmissive member to the non-transmissive member. The adhesive member is located on the outer frame and is not located on the one or more inner frames.
1. A light-emitting device comprising:
a package body;
a lid body connected to the package body, wherein the package body and the lid body together form a sealed space; and
a plurality of light-emitting elements disposed in the sealed space,
wherein the lid body comprises:
a non-transmissive member including an outer frame, and one or more inner frames connected to the outer frame, wherein the outer frame and the one or more inner frames define a plurality of openings,
a transmissive member integrally covering the plurality of openings and configured to allow light emitted from the plurality of light-emitting elements to be transmitted through the plurality of openings, and
an adhesive member fixing the transmissive member to the non-transmissive member; and
wherein the adhesive member is located on the outer frame and is not located on the one or more inner frames.
2. The light-emitting device according to claim 1 , wherein:
each of the plurality of openings is a path of light emitted from two or more of the plurality of light-emitting elements.
3. The light-emitting device according to claim 1 , wherein:
the adhesive member is connected to a lateral surface of the transmissive member.
4. The light-emitting device according to claim 1 , wherein:
the adhesive member is made of a glass material.
5. The light-emitting device according to claim 1 , wherein:
each of the plurality of light-emitting elements is a semiconductor laser element.
6. The light-emitting device according to claim 5 , wherein:
the one or more inner frames extend from a first part of the outer frame to a second part of the outer frame along a first direction; and
a spot shape of light emitted from the plurality of light-emitting elements and irradiated onto the transmissive member is an ellipse having a minor axis oriented in the first direction.
7. The light-emitting device according to claim 6 , wherein:
each of the plurality of openings has a first end and a second end in the first direction; and
the light-emitting device has an anode terminal penetrating the package body in the first direction on a side of the first end and a cathode terminal penetrating the package body in the first direction on a side of the second end.
8. The light-emitting device according to claim 7 , wherein:
a number of pairs of the anode terminal and the cathode terminal is at least as high as a number of the plurality of openings; and
among the plurality of light-emitting elements, all light-emitting elements corresponding to one of the openings are electrically connected to one of the pairs of the anode terminal and the cathode terminal.
9. The light-emitting device according to claim 1 , wherein:
the lid body comprises a support member supporting the non-transmissive member.
10. The light-emitting device according to claim 9 , wherein:
the support member comprises an opening; and
in a plan view, an outer edge of the opening of the support member is positioned inward of an outer edge of the non-transmissive member and outward of the openings of the non-transmissive member.
11. The light-emitting device according to claim 10 , wherein:
the lid body comprises a bonding member located between the outer edge of the opening of the support member and the outer edge of the non-transmissive member; and
an upper surface of the support member and a lower surface of the non-transmissive member are bonded together by the bonding member.
12. A lid body for use in a light-emitting device, the lid body comprising:
a non-transmissive member comprising an outer frame and one or more inner frames connected to the outer frame, wherein the outer frame and the one or more inner frames define a plurality of openings;
a transmissive member integrally covering the plurality of openings; and
an adhesive member fixing the transmissive member to the non-transmissive member,
wherein the adhesive member is located on the outer frame and is not located on the inner frames.
13. The lid body according to claim 12 , wherein:
the adhesive member is connected to a lateral surface of the transmissive member.
14. The lid body according to claim 12 , wherein:
the adhesive member is made of a glass material.
15. The lid body according to claim 12 , wherein:
the one or more inner frames extend from a first part of the outer frame to a second part of the outer frame along a first direction.
16. The lid body according to claim 12 , further comprising:
a support member supporting the non-transmissive member.
17. The lid body according to claim 16 , wherein:
the support member comprises an opening; and
in a plan view, an outer edge of the opening of the support member is positioned inward of an outer edge of the non-transmissive member and outward of the openings of the non-transmissive member.
18. The lid body according to claim 17 , wherein:
the lid body comprises a bonding member located between the outer edge of the opening of the support member and the outer edge of the non-transmissive member; and
an upper surface of the support member and a lower surface of the non-transmissive member are bonded together by the bonding member.