Deep brain stimulation electrode with photoacoustic and ultrasound imaging capabilities
US-12161295-B2 · Dec 10, 2024 · US
Photoacoustic image generation apparatus and acoustic wave unit
US9380944B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9380944-B2 |
| Application number | US-201414167785-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 29, 2014 |
| Priority date | Jul 29, 2011 |
| Publication date | Jul 5, 2016 |
| Grant date | Jul 5, 2016 |
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Abstract
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A pulse laser beam is emitted in a desired wavelength sequence using a laser source unit. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors and facing each other with a laser rod interposed therebetween. The birefringent filter changes an oscillation wavelength of the optical resonator in association with rotational displacement. A trigger control circuit rotates the birefringent filter at a predetermined rotation speed depending on the number of wavelengths included in the wavelength sequence of the pulse laser beam to be emitted. In addition, the trigger control circuit irradiates the laser rod with excitation light, and turns on the Q switch at a timing when a rotational displacement position of the birefringent filter is set to a position corresponding to the wavelength of the pulse laser beam to be emitted, to cause the pulse laser beam to be emitted.
First claim
Opening claim text (preview).
What is claimed is: 1. A photoacoustic image generation apparatus comprising: a laser source unit that sequentially emits a plurality of pulse laser beams in a predetermined wavelength sequence having at least two different wavelengths, the laser source unit including a laser rod, an excitation light source that irradiates the laser rod with excitation light, an optical resonator that has a pair of mirrors facing each other with the laser rod interposed therebetween, a Q switch wh…
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- A61B5/0095Primary
Human Necessities · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9380944B2 cover?
- A pulse laser beam is emitted in a desired wavelength sequence using a laser source unit. A Q switch and a birefringent filter are inserted into an optical resonator including a pair of mirrors and facing each other with a laser rod interposed therebetween. The birefringent filter changes an oscillation wavelength of the optical resonator in association with rotational displacement. A trigger c…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification A61B5/0095. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).