Patent ID: 11862929
Assignee: SZ DJI TECHNOLOGY CO., LTD.
Field: Optics (Instruments)
Classification: CPC H  G | IPC H

Claim 16:
17. A distance detection device, comprising:
a laser diode package module including:
a substrate including a first surface;
a semiconductor mounted on the first surface;
a cover disposed on the first surface of the substrate;
an accommodation space formed between the substrate and the cover;
a laser diode die disposed in the accommodation space;
a reflective surface disposed in the accommodation space for outputting light of the laser diode die reflected by the reflective surface and transmitted through a light-transmitting area, the light-transmitting area being partially disposed on a surface of the cover opposite the substrate;
a collimating lens disposed outside the light-transmitting area for collimating the light emitted from the light-transmitting area; and
a first optical path changing element disposed outside the light-transmitting area for changing an optical path of an outgoing light emitted from the light-transmitting area, such that the laser pulse from the laser diode package module is incident on the collimating lens in a direction substantially along a center axis of the collimating lens, wherein:
the laser diode package module emits laser pulses at an angle from the first surface of the substrate of the laser diode package module, the angle being less than 90 degrees; and
notches or shallow grooves are disposed at sharp corners of a bottom surface of the semiconductor.