Light-emitting devices, light-emitting equipment, and measuring devices
The light-emitting device addresses the delay in ToF sensors by incorporating a capacitance unit and switch element to reduce parasitic inductance, ensuring rapid light emission and efficient power usage.
JP7885535B2Active Publication Date: 2026-07-07FUJIFILM BUSINESS INNOVATION CORP
Patent Information
- Application Number
- JP2022014955
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-02-02
- Publication Date
- 2026-07-07
- Estimated Expiration
- 2042-02-02
Smart Images
Figure 0007885535000002 
Figure 0007885535000003 
Figure 0007885535000004
Abstract
To provide a light emitting apparatus and the like that require short time from when current is started to be consumed for light emission until a predetermined power is reached.SOLUTION: A light emitting apparatus comprises: a light emitting unit that includes luminous elements; a driving unit that includes first elements each connected with a cathode electrode provided on a cathode side of the luminous element, and supplies current for causing light emission to drive the luminous element; and capacitance units that are each provided between the cathode electrode and an anode electrode provided on an anode side of the luminous element in parallel with a current path for causing light emission.SELECTED DRAWING: Figure 4
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Semiconductor light source and driving circuit thereof
CN113594321A
Light-emitting device
JP2020205390A
Laser drive device, sensing module, and timing adjustment method
JP2021022689A
Pulsed laser and bioanalytic system
US20160344156A1
Asymmetric edge compensation of both anode and cathode terminals of a vertical-cavity surface-emitting laser (VCSEL) diode
US9054485B1