US 12,294,196 B2
Light emitting device
Soichiro Miura, Tokushima (JP); and Ryota Okuno, Tokushima (JP)
Assigned to NICHIA CORPORATION, Anan (JP)
Filed by NICHIA CORPORATION, Anan (JP)
Filed on Oct. 26, 2023, as Appl. No. 18/495,403.
Application 18/495,403 is a continuation of application No. 18/149,241, filed on Jan. 3, 2023, granted, now 11,876,342.
Application 18/149,241 is a continuation of application No. 17/069,299, filed on Oct. 13, 2020, granted, now 11,575,243, issued on Feb. 7, 2023.
Claims priority of application No. 2019-198334 (JP), filed on Oct. 31, 2019.
Prior Publication US 2024/0055828 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/02326 (2021.01); H01S 5/02253 (2021.01); H01S 5/02325 (2021.01)
CPC H01S 5/02326 (2021.01) [H01S 5/02253 (2021.01); H01S 5/02325 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A light emitting device comprising:
a laser element;
a case enclosing the laser element, the case comprising:
a base comprising:
a bottom portion having an upward-facing surface on which the laser element is directly or indirectly disposed, and
a frame portion surrounding the laser element and having a lateral surface that intersects with the upward-facing surface, and
a cover comprising a light-transmissive region configured to allow light emitted from the laser element to transmit through the light-transmissive region;
a first lens disposed outside the case and configured to collimate or converge light emitted from the laser element; and
a second lens that is attached to the upward-facing surface of the bottom portion of the base and spaced apart from the first lens, the second lens located in an optical path between the laser element and the first lens; wherein:
the second lens is spaced apart from the light-transmissive region such that an open space is located in the case between the light-transmissive region and the second lens;
the laser element has an end surface comprising a light-emitting region from which the light is emitted from the laser element, the end surface extending in a plane that intersects the upward-facing surface of the bottom portion of the case; and
a straight line extending perpendicularly from the end surface passes through the second lens.