Transportation vehicle, physiological state detection device, and physiological state detection method applied to transportation vehicle
US-2024374188-A1 · Nov 14, 2024 · US
Fundus camera
US8979265B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8979265-B2 |
| Application number | US-72468210-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 16, 2010 |
| Priority date | Mar 19, 2009 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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In a photographing optical system, an autofluorescence barrier filter having a characteristic of transmitting a light having an autofluorescence wavelength and a near-infrared wavelength, and a near-infrared light cut-off filter having a characteristic of transmitting the visible light and blocking the near-infrared light are disposed to be replaceable. In the case of observing a fundus, the fluorescence barrier filter is inserted into an optical path in an observation photographing optical system, so that observation can be performed by using a near-infrared illuminating light. In the case of autofluorescence photographing, the photographing can be performed without filter switching. In the case of color photographing, at the time of observation, the observation is performed using the fluorescence barrier filter, and at the time of photographing, the photographing can be performed using the replaced infrared light cut-off filter.
First claim
Opening claim text (preview).
What is claimed is: 1. A fundus camera, comprising: an illumination unit including a unit configured to illuminate a fundus of an eye to be examined with non-visible light to perform observation using the non-visible light and a unit configured to illuminate the fundus with a visible wavelength band and non-visible light to perform photographing using visible light; a fluorescence exciter filter disposed to be insertable in or removable from a first optical path between the illu…
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- A61B3/14Primary
Human Necessities · mapped topic
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- What does patent US8979265B2 cover?
- In a photographing optical system, an autofluorescence barrier filter having a characteristic of transmitting a light having an autofluorescence wavelength and a near-infrared wavelength, and a near-infrared light cut-off filter having a characteristic of transmitting the visible light and blocking the near-infrared light are disposed to be replaceable. In the case of observing a fundus, the fl…
- Who is the assignee on this patent?
- Itoh Hiroshi, Nakajima Hajime, Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification A61B3/14. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 17 2015 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).