US 12,278,317 B2
Transparent sealing member and optical component
Iwao Ohwada, Nagoya (JP); and Yoshio Kikuchi, Nagoya (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Mar. 29, 2021, as Appl. No. 17/215,306.
Application 17/215,306 is a continuation of application No. PCT/JP2019/039936, filed on Oct. 10, 2019.
Claims priority of application No. 2018-192162 (JP), filed on Oct. 10, 2018; and application No. 2018-212467 (JP), filed on Nov. 12, 2018.
Prior Publication US 2021/0217938 A1, Jul. 15, 2021
Int. Cl. H01L 33/58 (2010.01); G02B 19/00 (2006.01)
CPC H01L 33/58 (2013.01) [G02B 19/0028 (2013.01); G02B 19/0061 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A transparent sealing member: used in an optical component equipped with a package including at least one optical element configured to emit ultraviolet light, and a mounting substrate on which the optical element is mounted, the transparent sealing member comprising:
a transparent body joined via an organic adhesive layer formed on an upper surface of the mounting substrate,
wherein the transparent body includes a concave portion which is open at a bottom thereof, an annular pedestal fixed on the mounting substrate; and a lens body integrally formed on the pedestal, and
the concave portion, which is open at the bottom thereof, of the transparent body forms an accommodating space for the optical element together with the upper surface of the mounting substrate;
the accommodating space has a quadrangular shape; and
when a parameter H based on a height factor of the transparent body is defined by an arithmetic expression (1) below,
H=hm 3−hk+hl  (1)
(where hm is a height of the lens body, hk is a maximum height of the accommodating space, and hl is a height of the pedestal),
the parameter H lies within a range of from 0 to 5 and from 10 to 18.