US 12,405,431 B2
Optical module
Honghao Zhang, Shandong (CN); Jiaao Zhang, Shandong (CN); Bin Wang, Shandong (CN); Xujie Huang, Shandong (CN); Shuhua Ye, Shandong (CN); Xueru Liu, Shandong (CN); Qinhao Fu, Shandong (CN); Yifan Xie, Shandong (CN); Yi Tang, Shandong (CN); and Benzheng Dong, Shandong (CN)
Assigned to HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD., Qingdao (CN)
Filed by HISENSE BROADBAND MULTIMEDIA TECHNOLOGIES CO., LTD., Shandong (CN)
Filed on Mar. 16, 2023, as Appl. No. 18/122,534.
Application 18/122,534 is a continuation in part of application No. PCT/CN2020/134054, filed on Dec. 4, 2020.
Claims priority of application No. 202010988113.2 (CN), filed on Sep. 18, 2020; application No. 202010988117.0 (CN), filed on Sep. 18, 2020; application No. 202010989983.1 (CN), filed on Sep. 18, 2020; and application No. 202010989984.6 (CN), filed on Sep. 18, 2020.
Prior Publication US 2023/0228955 A1, Jul. 20, 2023
Int. Cl. H04B 10/00 (2013.01); G02B 6/42 (2006.01)
CPC G02B 6/4246 (2013.01) [G02B 6/4281 (2013.01); G02B 6/4292 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An optical module, comprising:
a shell;
a circuit board disposed in the shell;
a light receiving assembly disposed in the shell and electrically connected with the circuit board, the light receiving assembly being configured to convert received optical signals into electrical signals; and
a first fiber optic adapter connected with the light receiving assembly, the first fiber optic adapter being configured to transmit optical signals from an outside of the optical module to the light receiving assembly; wherein
the light receiving assembly includes:
a first cavity body connected with the first fiber optic adapter;
a first lens group disposed in the first cavity body, the first lens group being configured to split the optical signals transmitted by the first fiber optic adapter to the first cavity body for a first time according to a wavelength, so as to obtain a first optical signal beam and a second optical signal beam;
a plurality of wavelength division demultiplexers disposed in the first cavity body, the plurality of wavelength division demultiplexers including:
a first wavelength division demultiplexer configured to receive the first optical signal beam and split the first optical signal beam for a second time according to a wavelength; and
a second wavelength division demultiplexer configured to receive the second optical signal beam and split the second optical signal beam for a second time according to a wavelength; and
at least one light receiving component disposed in the first cavity body, the light receiving component including a plurality of light receiving chips, and the plurality of light receiving chips being configured to receive the optical signals split for the second time by the plurality of wavelength division demultiplexers and convert the optical signals into the electrical signals;
wherein the first cavity body includes:
a base, the base including:
a first support surface, the first lens group and the plurality of wavelength division demultiplexers being disposed on the first support surface; and
a second support surface, the light receiving component being disposed on the second support surface, the first support surface being farther from the circuit board than the second support surface, and the first support surface being higher than the second support surface, so as to provide a step between the first support surface and the second support surface;
a side wall disposed around the base;
a cavity defined by the base and the side wall; and
a first via hole disposed on the side wall and communicating with the cavity, the first fiber optic adapter being connected with the first cavity body through the first via hole.