JP2016120104A5

JP2016120104A5 -

Info

Publication number: JP2016120104A5
Application number: JP2014262323A
Authority: JP
Filing date: 2014-12-25
Publication date: 2017-03-02
Anticipated expiration: 2034-12-25

Claims

A first light source that emits white light;
A second light source unit that emits laser light of at least one predetermined wavelength band included in the wavelength band of the white light;
A multiplexing member that combines the white light and the laser beam;
The multiplexing member is disposed at least on an optical path of light that is randomly polarized light among the white light and the laser light, and converts the polarization direction of incident light into a predetermined direction, and the polarization conversion A polarization beam splitter on which light that has passed through the element enters,
The polarization beam splitter combines the white light and the laser light whose polarization directions are orthogonal to each other by the polarization conversion element.
Lighting device.

A first collimating optical system that makes white light emitted from the first light source unit substantially parallel light;
A diffusing member that generates a secondary light source by diffusing laser light emitted from the second light source unit;
A second collimating optical system in which the laser light emitted from the diffusing member is substantially parallel light;
Further comprising
The combining member combines the white light converted into substantially parallel light by the first collimating optical system and the laser light converted into substantially parallel light by the second collimating optical system.
The lighting device according to claim 1.

A coupling optical system for coupling laser light emitted from the second light source unit to an optical fiber;
A third collimating optical system that makes laser light emitted from the optical fiber substantially parallel light;
Further comprising
The diffusing member generates a secondary light source by diffusing the laser light emitted from the third collimating optical system;
The lighting device according to claim 2.

A condenser optical system that forms an image of the light combined by the multiplexing member on the incident end of the light guide;
The condenser optical system is configured so that the size of the image of the secondary light source formed on the incident end of the light guide is substantially the same as the diameter of the incident end of the light guide. Focusing light on the incident end of the light guide;
The lighting device according to claim 2 or 3 .

The second light source unit has a plurality of laser light sources,
The plurality of laser light sources include at least a red laser light source that emits red laser light, a green laser light source that emits green laser light, and a blue laser light source that emits blue laser light,
The illuminating device of any one of Claims 1-4 .

The second light source unit has a plurality of laser light sources,
By controlling the driving of the plurality of laser light sources independently, the color temperature of the light combined by the combining member is adjusted.
The illuminating device of any one of Claims 1-5 .

At least one of the laser light sources constituting the second light source unit emits laser light in a wavelength band corresponding to excitation light used for fluorescence observation of an observation site.
The illuminating device of any one of Claims 1-6 .

A third light source unit that emits light in a wavelength band different from the laser beam emitted from the second light source unit;
Light obtained by combining the white light emitted from the first light source unit and the light emitted from the third light source unit is incident on the multiplexing member,
Laser light emitted from the second light source unit and light obtained by combining the white light emitted from the first light source unit and the light emitted from the third light source unit by the multiplexing member. The light is further combined,
The illuminating device of any one of Claims 1-7 .

The first light source unit and the third light source unit are configured by LEDs,
The lighting device according to claim 8.

Emitting white light from the first light source unit;
Emitting a laser beam of at least one predetermined wavelength band included in the wavelength band of the white light from the second light source unit;
Combining the white light and the laser light by a combining member;
Including
The multiplexing member is disposed at least on an optical path of light that is randomly polarized light among the white light and the laser light, and converts a polarization direction of incident light into a predetermined direction, and passes through the polarization conversion element. A polarization beam splitter on which the incident light is incident,
The polarization beam splitter combines the white light and the laser light whose polarization directions are orthogonal to each other by the polarization conversion element.
Lighting method.

An illumination device that outputs at least one of white light and excitation light irradiated to a patient's surgical field;
The lighting device includes:
A first light source that emits white light;
A second light source unit that emits at least laser light in a wavelength band corresponding to the excitation light included in the wavelength band of the white light;
A multiplexing member that combines the white light and the laser beam;
With
The multiplexing member is disposed at least on an optical path of light that is randomly polarized light among the white light and the laser light, and converts a polarization direction of incident light into a predetermined direction, and passes through the polarization conversion element. A polarization beam splitter on which the incident light is incident,
The polarization beam splitter combines the white light and the laser light whose polarization directions are orthogonal to each other by the polarization conversion element.
Observation device.

The observation apparatus is further provided with a lens barrel that is inserted into a body cavity of a patient, the output light from the illumination device is guided through the interior, and the output light is irradiated to the surgical field in the body cavity. An endoscopic device,
The observation apparatus according to claim 11.

The observation device is a microscope device in which output light from the illumination device is emitted to the outside through a projection lens and irradiated to the surgical field.
The observation apparatus according to claim 11.

A long wavelength band image generation unit that generates a first image based on light having a longer wavelength band than the excitation light and including a wavelength band of fluorescence by the excitation light;
A short wavelength band image generation unit that generates a second image based on light having a shorter wavelength band than the fluorescence and including the wavelength band of the excitation light;
Further comprising
The observation device according to any one of claims 11 to 13 .

In the normal observation mode where a normal observation image of the surgical field with white light is obtained,
Both the first light source unit and the second light source unit are driven,
The normal observation image is obtained by combining the first image and the second image.
The observation apparatus according to claim 14.

In the normal observation mode, the normal observation image is generated by adding the RGB values of the first image and the RGB values of the second image.
The observation apparatus according to claim 15.

In the special observation mode where a fluorescence observation image of the surgical field with excitation light is obtained,
Of the first light source unit and the second light source unit, only the second light source unit is driven,
The second image is obtained as the fluorescence observation image;
The observation apparatus according to any one of claims 14 to 16 .

In the normal / special observation mode in which the normal observation image of the surgical field with white light and the fluorescence observation image of the surgical field with excitation light can be obtained simultaneously,
Both the first light source unit and the second light source unit are driven,
By combining the first image and the second image, an image in which the normal observation image and the fluorescence observation image are superimposed is obtained.
The observation apparatus according to any one of claims 14 to 17 .

In the normal / special observation mode, the R value of the first image and the GB value of the second image are added to generate an image in which the normal observation image and the fluorescence observation image are superimposed. To be
The observation device according to claim 18.

The short wavelength band image generation unit generates the second image based on light in which a component of a wavelength band corresponding to the excitation light is attenuated or removed,
In the normal / special observation mode, the RGB value of the first image and the RGB value of the second image are added to generate an image in which the normal observation image and the fluorescence observation image are superimposed. To be
The observation device according to claim 18.