CN210990153U - Multimode endoscope light source device - Google Patents
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- CN210990153U CN210990153U CN201921378758.3U CN201921378758U CN210990153U CN 210990153 U CN210990153 U CN 210990153U CN 201921378758 U CN201921378758 U CN 201921378758U CN 210990153 U CN210990153 U CN 210990153U
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Abstract
The utility model provides a multimode endoscope light source device belongs to endoscope technical field. The light source device solves the problems that the existing endoscope light source device adopts a light filtering wheel disc, and has poor structural stability and limited maximum light source brightness. The multimode endoscope light source device comprises a box body and an emergent optical cable, wherein an end light source and a plurality of side light sources are arranged in the box body, the end light source and the light inlet end of the emergent optical cable are arranged oppositely, the side light sources are positioned on the side part of a connecting line of the end light source and the light inlet end and are sequentially arranged along the connecting line, a plurality of trans-reflectors which are equal to the number of the side light sources and are arranged between the end light source and the light inlet end in a one-to-one correspondence mode and used for reflecting light rays emitted by the side light sources arranged in the corresponding mode to the end light sources to the light inlet end are arranged between the end light source and the light inlet end, and the. The utility model has the advantages of compact structure, no moving part, good reliability, being capable of simulating multiple scattering, etc.
Description
Technical Field
The utility model belongs to the technical field of the endoscope, a light source device of endoscope, especially a multimode endoscope light source device are related to.
Background
When the light source irradiates tissues in a body, the final observation result is the superposition of multiple layers of images with different depths due to different penetration depths of light with different wavelengths. The wider the spectral band, the wider the depth range the image contains. When the electronic endoscope is used for white light illumination, the received image has the problems of low contrast, blurred details and inconvenience for observing a fine blood vessel structure and distinguishing normal tissues from pathological tissues due to the fact that a white light spectrum has a wide wavelength range.
In order to obtain clearer images, particularly information of capillary vessels and mucous membranes, the endoscope illumination system in the market intercepts white light by using a filter wheel disc to obtain a specific spectrum. For example, the chinese patent discloses a multispectral endoscopic imaging device [ No. CN106618458B ], including an endoscope head, a CMOS image pickup assembly, an image processing unit, a display unit, a storage unit, and a light source unit; the endoscope head is detachably connected with the CMOS camera shooting component, and the CMOS camera shooting component, the display unit and the storage unit are respectively connected with corresponding connecting ends of the image processing unit; the device also comprises a narrow-band filter color wheel, a color wheel servo motor and a control mechanism; the narrow-band filter color wheel is in transmission connection with a color wheel servo motor, the light source part is connected with the narrow-band filter color wheel, and the color wheel servo motor and the image processing unit are respectively connected with the control mechanism; the narrow-band filter color wheel comprises a narrow-band filter turntable, and a plurality of different narrow-band filters are arranged in the circumferential direction of the narrow-band filter turntable.
Although the multispectral endoscopic imaging device can obtain spectrums of different specific wave bands, the multispectral endoscopic imaging device still has the following problems: 1. the spectrum of a specific wave band is screened from the white light, so that the efficiency is low; 2. due to the existence of problem 1, the maximum brightness of a specific spectrum is limited, affecting the lighting effect; the more the wave bands are screened, the lower the maximum brightness is; 3. mechanical structures such as a color wheel servo motor and the like need to be arranged, and the risk of equipment failure is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems in the prior art and providing a multimode endoscope light source device with good reliability.
The purpose of the utility model can be realized by the following technical proposal:
a multimode endoscope light source device comprises a box body and an emergent optical cable, wherein a light inlet end of the emergent optical cable extends into the box body, and the multimode endoscope light source device is characterized in that an end light source and a plurality of lateral light sources are arranged in the box body, the end light source and the light inlet end are arranged oppositely, the lateral light sources are positioned on the lateral portion of a connecting line of the end light source and the light inlet end and are sequentially arranged along the connecting line, a plurality of trans-reflectors which are equal to the lateral light sources in number and are arranged in a one-to-one correspondence mode are arranged between the end light source and the light inlet end and are used for reflecting light rays emitted by the lateral light sources which are correspondingly arranged to the end light source to the light inlet end, and the trans-reflectors transmit light rays reflected by all the trans-reflectors. The light source brightness of the end light source can be finely adjusted within the output range of 0-100%, the light source brightness of each side light source can be finely adjusted within the output range of 0-100%, the brightness of each light source is independently adjusted and is not influenced by the adjustment of other light sources, and the adjustment mode is realized by changing the voltage at two ends of the light source.
The end light source is positioned at the rear part, the emergent optical cable is positioned at the front part, the plurality of side light sources are sequentially arranged from back to front, light rays emitted by the end light source are vertical to the end face of the light inlet end, and light rays emitted by the side light sources are vertical to the end face of the light inlet end after being reflected by the trans-reflector. The light rays emitted by the end light source sequentially transmit a plurality of the trans-reflectors and then are incident to the light inlet end; the light emitted by the side light source is reflected by the transflector arranged opposite to the side light source, and is transmitted by all the transflector positioned in the front of the side light source and then is incident to the light inlet end of the emergent optical cable. The front part of the transflector is provided with a reflecting plane, and the side light source and the emergent optical cable which are arranged opposite to the transflector are positioned on the same side of the reflecting plane.
In the above multimode endoscope light source device, the plurality of side light sources are arranged in sequence from the back to the front according to the wavelengths of the light emitted by the side light sources from long to short, and the wavelength of the light emitted by the end light source is greater than the wavelength of the light emitted by the side light source.
The wavelength of light emitted by the light source is set to be lambda 1, the boundary wavelength of the transmission wavelength and the reflection wavelength of the transflector is set to be lambda 2, when lambda 2 is smaller than lambda 1, the light emitted by the light source is transmitted through the transflector, and when lambda 2 is larger than lambda 1, the light emitted by the light source is reflected by the transflector.
In the above multimode endoscope light source device, the number of the side light sources is 2-6.
In the above multimode endoscope light source device, the number of the side light sources is 3: by last first side light source, second side light source and the third side light source that sets gradually before back, the transflector be 3: the light source comprises a first transflective body arranged opposite to the first side light source, a second transflective body arranged opposite to the second side light source and a third transflective body arranged opposite to the third side light source, wherein the wavelength of light emitted by the end light source is greater than the dividing wavelength of the transmission wavelength and the reflection wavelength of the first transflective body, the dividing wavelength of the transmission wavelength and the reflection wavelength of the first transflective body is greater than the wavelength of light emitted by the first side light source, the wavelength of light emitted by the first side light source is greater than the dividing wavelength of the transmission wavelength and the reflection wavelength of the second transflective body, the dividing wavelength of the transmission wavelength and the reflection wavelength of the second transflective body is greater than the wavelength of light emitted by the second side light source, the wavelength of light emitted by the second side light source is greater than the dividing wavelength of the transmission wavelength and the reflection wavelength of the third transflective body, and the dividing wavelength of the transmission wavelength and the reflection wavelength of the third transflective body is greater than the wavelength of light emitted by the third side light source .
The wavelength of the light emitted by the first side light source is greater than that of the light emitted by the second side light source, and the wavelength of the light emitted by the second side light source is greater than that of the light emitted by the third side light source. The light emitted by the end light source transmits through the first transflector, the second transflector and the third transflector, the light emitted by the first side light source transmits through the second transflector and the third transflector after being reflected by the first transflector, the light emitted by the second side light source transmits through the third transflector after being reflected by the second transflector, and the light emitted by the third side light source is reflected by the third transflector.
In the above multimode endoscope light source device, the wavelength of the light emitted by the end light source is 600 to 660nm, the wavelength of the light emitted by the first side light source is 500 to 550nm, the wavelength of the light emitted by the second side light source is 430 to 470nm, and the wavelength of the light emitted by the third side light source is 380 to 440 nm.
In the above multimode endoscope light source device, a boundary between a transmission wavelength and a reflection wavelength of the first transflector is one-half of a sum of a wavelength of light emitted from the end light source and a wavelength of light emitted from the first side light source, a boundary between a transmission wavelength and a reflection wavelength of the second transflector is one-half of a sum of a wavelength of light emitted from the first side light source and a wavelength of light emitted from the second side light source, and a boundary between a transmission wavelength and a reflection wavelength of the third transflector is one-half of a sum of a wavelength of light emitted from the second side light source and a wavelength of light emitted from the third side light source.
In the above multimode endoscope light source device, the plurality of side light sources are arranged in sequence from short to long according to the wavelength of light emitted by the side light sources from back to front, and the wavelength of light emitted by the end light source is smaller than the wavelength of light emitted by the side light sources.
In the above multimode endoscope light source device, the number of the side light sources is 3: by last first side light source, second side light source and the third side light source that sets gradually before back, the transflector be 3: the light source comprises a first transflective body arranged opposite to the first side light source, a second transflective body arranged opposite to the second side light source and a third transflective body arranged opposite to the third side light source, wherein the wavelength of light emitted by the end light source is smaller than the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflective body, the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflective body is smaller than the wavelength of light emitted by the first side light source, the wavelength of light emitted by the first side light source is smaller than the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflective body, the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflective body is smaller than the wavelength of light emitted by the second side light source, the wavelength of light emitted by the second side light source is smaller than the dividing wavelength of the reflection wavelength and the transmission wavelength of the third transflective body, and the dividing wavelength of the reflection wavelength and the transmission wavelength of the third transflective body is smaller than the wavelength of light emitted by the third side light source .
In the above multimode endoscope light source device, the transflective body is a dichroic mirror.
In the above multimode endoscope light source device, a first collimating lens is disposed at the light-emitting end of the end light source, a second collimating lens is disposed at the light-entering end of the exit optical cable, and a third collimating lens is disposed at the light-emitting end of the side light source.
The first collimating lens converts light rays emitted by the end light source into parallel light beams; the number of the collimating lenses III is equal to that of the lateral light sources, and the collimating lenses III are arranged in a one-to-one correspondence manner and change light rays emitted by the lateral light sources into parallel light beams; and the second collimating lens couples the passed parallel light beams into the outgoing optical cable. The first collimating lens can form a collimating lens group by a plurality of pieces, the second collimating lens can form a collimating lens group by a plurality of pieces, and the third collimating lens correspondingly arranged to each side light source can form a collimating lens group by a plurality of pieces.
In the above multimode endoscope light source device, the box body is provided with a first light absorption part which is arranged opposite to the plurality of side light sources and is used for absorbing redundant light.
The third side light source emits light to the third transflector through the collimating lens III which is arranged opposite to the third side light source, most of the light is reflected to the collimating lens II, and only a small part of the light is transmitted to the light absorption part I and absorbed by the light absorption part I. The second side light source emits light to the second transflector through the collimating lens III which is arranged opposite to the second side light source, most of the light is reflected to the collimating lens II, and only a small part of the light is transmitted to the first light absorption part and absorbed by the first light absorption part. The first side light source emits light to the first transflector through the collimating lens III which is arranged opposite to the first side light source, most of the light is reflected to the collimating lens II, and only a small part of the light is transmitted to the light absorption part I and absorbed by the light absorption part I. The end light source emits light forwards through the first collimating lens, most of the light sequentially transmits the first transflector, the second transflector and the third transflector to the second collimating lens, and only a small part of the light is reflected to the first light absorption part through the first transflector, the second transflector and the third transflector and is absorbed by the first light absorption part.
The illumination light emitted from the emergent optical cable is effectively ensured to be light with the expected wavelength combination.
In the multimode endoscope light source device, the box body is internally provided with a second light absorption part, a third light absorption part and a fourth light absorption part, the second light absorption part is arranged at the light sources at the side parts, the third light absorption part is arranged at the light source at the end part, and the fourth light absorption part is arranged at the emergent optical cable. The first light absorption part, the second light absorption part, the third light absorption part and the fourth light absorption part are made of light absorption materials such as black nanometer materials and black flannelette materials, mapping and reflection are not generated, stray light can be prevented from irradiating to the external environment through the ventilation hole, and light pollution is prevented.
Compared with the prior art, the multimode endoscope light source device has the following advantages: when the LED lamp works, all light sources are lightened simultaneously, different light radiation ratios correspond to different illumination modes, the mode switching only needs to adjust the current of the light sources, and the response speed is high; the whole brightness is high, the mode is rich, and various diagnosis requirements are met; the structure is compact, no moving part is arranged, and the reliability is good; the light absorbing parts can inhibit multiple scattering, ensure the illuminating light emitted from the emergent optical cable to be light with a desired wavelength combination, and improve the contrast of the image.
Drawings
Fig. 1 is a partial schematic structural diagram of a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a preferred embodiment of the present invention.
In the figure, 1, a box body; 2. an outgoing optical cable; 3. an end light source; 4. a first side light source; 5. a second side light source; 6. a third side light source; 7. a first transflector; 8. a second transflector; 9. a third transflector; 10. a first collimating lens; 11. a second collimating lens; 12. a third collimating lens; 13. a first light absorption part; 14. a second light absorption part; 15. a light absorbing part III; 16. and a light absorbing part IV.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example one
The multimode endoscope light source device shown in fig. 1 comprises a box body 1 and an emergent optical cable 2, wherein a light inlet end of the emergent optical cable 2 extends into the box body 1, an end light source 3 and a plurality of side light sources are arranged in the box body 1, the end light source 3 is arranged opposite to the light inlet end, the side light sources are arranged on the side part of a connecting line of the end light source 3 and the light inlet end of the emergent optical cable 2 and are sequentially arranged along the connecting line, a plurality of trans-reflectors which are equal to the side light sources in number and are arranged in a one-to-one correspondence mode and used for reflecting light rays emitted by the side light sources correspondingly arranged to the end light source to the light inlet end are arranged between the end light source 3 and the light inlet end, and the trans-reflectors transmit light rays reflected by. That is, the transflective body in the present embodiment transmits light having a wavelength longer than a boundary wavelength between a transmission wavelength and a reflection wavelength of the transflective body, and reflects light having a wavelength shorter than the boundary wavelength between the transmission wavelength and the reflection wavelength of the transflective body.
The light source brightness of the end light source 3 can be finely adjusted within the output range of 0-100%, the light source brightness of each side light source can be finely adjusted within the output range of 0-100%, the brightness of each light source is independently adjusted and is not influenced by the adjustment of other light sources, and the adjustment mode is realized by changing the voltage at two ends of the light source.
As shown in fig. 1, the end light source 3 is located at the rear part, the exit optical cable 2 is located at the front part, the plurality of side light sources are sequentially arranged from back to front according to the wavelength of light emitted by the side light sources from long to short, and the wavelength of light emitted by the end light source 3 is greater than the wavelength of light emitted by the side light sources.
The light emitted by the end light source 3 is vertical to the end surface of the light inlet end, and the light emitted by the side light source is vertical to the end surface of the light inlet end after being reflected by the transflector. The light rays emitted by the end light source 3 sequentially transmit a plurality of trans-reflectors and then are incident to the light inlet end; the light emitted from the side light source is reflected by the trans-reflector opposite to the side light source, and is transmitted by all the trans-reflectors in front of the side light source and then is incident to the light inlet end of the emergent optical cable 2. The front part of the transflector has a reflecting plane and the side light sources and exit cables 2 located opposite the transflector are located on the same side of the reflecting plane.
The wavelength of light emitted by the light source is set to be lambda 1, the boundary wavelength of the transmission wavelength and the reflection wavelength of the transflector is set to be lambda 2, when lambda 2 is smaller than lambda 1, the light emitted by the light source is transmitted through the transflector, and when lambda 2 is larger than lambda 1, the light emitted by the light source is reflected by the transflector.
As shown in fig. 1 and 2, the number of side light sources is 3: by last first side light source 4, second side light source 5 and the third side light source 6 that sets gradually before, the transflector is 3: a first transflector 7 arranged opposite to the first side light source 4, a second transflector 8 arranged opposite to the second side light source 5 and a third transflector 9 arranged opposite to the third side light source 6, wherein the first transflector 7, the second transflector 8 and the third reflector are plate-shaped, the first transflector 7, the second transflector 8 and the third reflector are dichroic mirrors, and the dichroic mirrors are coated glass slides.
In this embodiment, the wavelength of the light emitted from the end light source 3 is longer than the boundary wavelength between the reflection wavelength and the transmission wavelength of the first transflector 7, the boundary wavelength between the emission wavelength and the transmission wavelength of the first transflector 7 is longer than the wavelength of the light emitted from the first side light source 4, the wavelength of the light emitted from the first side light source 4 is longer than the boundary wavelength between the emission wavelength and the transmission wavelength of the second transflector 8, the boundary wavelength between the emission wavelength and the transmission wavelength of the second transflector 8 is longer than the wavelength of the light emitted from the second side light source 5, the wavelength of the light emitted from the second side light source 5 is longer than the boundary wavelength between the emission wavelength and the transmission wavelength of the third transflector 9, and the boundary wavelength between the emission wavelength and the transmission wavelength of the third transflector 9 is longer than the wavelength of the light emitted from the third side light source 6.
The wavelength of the light emitted by the first side light source 4 is greater than the wavelength of the light emitted by the second side light source 5, and the wavelength of the light emitted by the second side light source 5 is greater than the wavelength of the light emitted by the third side light source 6. The peak radiation intensity of the end light source 3 is 1-1.5 times of the peak radiation intensity of the first side light source 4; the peak radiation intensity of the first side light source 4 is 2-3 times of the peak radiation intensity of the second side light source 5; the peak radiation intensity of the second side light source 5 is 3-5 times of the peak radiation intensity of the third side light source 6.
The light emitted from the end light source 3 transmits through the first, second, and third transflector 7, 8, and 9, the light emitted from the first side light source 4 is reflected by the first transflector 7 and then transmits through the second and third transflector 8 and 9, the light emitted from the second side light source 5 is reflected by the second transflector 8 and then transmits through the third transflector 9, and the light emitted from the third side light source 6 is reflected by the third transflector 9.
The wavelength of the light emitted from the end light source 3 is 600-660 nm, the wavelength of the light emitted from the first side light source 4 is 500-550 nm, the wavelength of the light emitted from the second side light source 5 is 430-470 nm, and the wavelength of the light emitted from the third side light source 6 is 380-440 nm.
The boundary between the transmission wavelength and the reflection wavelength of the first transflector 7 is one-half of the sum of the wavelength of the light emitted from the end light source 3 and the wavelength of the light emitted from the first side light source 4, the boundary between the transmission wavelength and the reflection wavelength of the second transflector 8 is one-half of the sum of the wavelength of the light emitted from the first side light source 4 and the wavelength of the light emitted from the second side light source 5, and the boundary between the transmission wavelength and the reflection wavelength of the third transflector 9 is one-half of the sum of the wavelength of the light emitted from the second side light source 5 and the wavelength of the light emitted from the third side light source 6.
When the wavelength of the light emitted from the end light source 3 is 600nm, the wavelength of the light emitted from the first side light source 4 is 500nm, the wavelength of the light emitted from the second side light source 5 is 450nm, and the wavelength of the light emitted from the third side light source 6 is 400nm, the boundary between the transmission wavelength and the reflection wavelength of the first transflector 7 is 550nm (500+ 600)/2, the boundary between the transmission wavelength and the reflection wavelength of the second transflector 8 is 475nm (500+ 450)/2, and the boundary between the transmission wavelength and the reflection wavelength of the third transflector 9 is 425nm (450+ 400)/2.
As shown in fig. 1 and 2, a first collimating lens 10 is disposed at the light exit end of the end light source 3, a second collimating lens 11 is disposed at the light entrance end of the exit optical cable 2, and a third collimating lens 12 is disposed at the light exit end of the side light source. The first collimating lens 10 converts the light emitted by the end light source 3 into parallel light beams; the number of the collimating lenses III 12 is equal to that of the lateral light sources, and the collimating lenses III are arranged in a one-to-one correspondence manner, so that light rays emitted by the lateral light sources are changed into parallel light beams; the second collimating lens 11 couples the parallel light beams passing through into the outgoing optical cable 2. The first collimating lens 10 can be a plurality of pieces to form a collimating lens group, the second collimating lens 11 can be a plurality of pieces to form a collimating lens group, and the third collimating lens 12 corresponding to each side light source can be a plurality of pieces to form a collimating lens group.
As shown in fig. 2, a light absorbing part 13 for absorbing excessive light is provided in the case 1 to face the side light sources. The third side light source 6 emits light to the third transflector 9 through the collimating lens three 12 disposed opposite to the third side light source 6, and at this time, most of the light is reflected to the collimating lens two 11, and only a small portion of the light is transmitted to the light absorbing portion one 13 and absorbed by the light absorbing portion one 13. The second side light source 5 emits light to the second transflector 8 through the third collimating lens 12 disposed opposite the second side light source 5, and most of the light is reflected to the second collimating lens 11, and only a small portion of the light is transmitted to the first light absorption part 13 and absorbed by the first light absorption part 13. The first side light source 4 emits light to the first transflector 7 through the collimating lens three 12 disposed opposite the first side light source 4, and most of the light is reflected to the collimating lens two 11, and only a small portion of the light is transmitted to the light absorbing portion one 13 and absorbed by the light absorbing portion one 13. The end light source 3 emits light forward through the collimating lens I10, most of the light sequentially transmits the first transflector 7, the second transflector 8 and the third transflector 9 to the collimating lens II 11, and only a small part of the light is reflected to the light absorption part I13 through the first transflector 7, the second transflector 8 and the third transflector 9 and is absorbed by the light absorption part I13. It is effectively ensured that the illumination light emerging from the exit optical cable 2 is light of a desired wavelength combination.
As shown in fig. 2, a second light-absorbing part 14, a third light-absorbing part 15 and a fourth light-absorbing part 16 are further arranged in the box body 1, the second light-absorbing part 14 is arranged at the plurality of side light sources, the third light-absorbing part 15 is arranged at the end light source 3, and the fourth light-absorbing part 16 is arranged at the exit optical cable 2. The first light absorption part 13, the second light absorption part 14, the third light absorption part 15 and the fourth light absorption part 16 are made of light absorption materials such as black nanometer materials and black flannelette materials, mapping and reflection are not generated, stray light can be prevented from irradiating to the external environment through the ventilation hole, and light pollution is prevented.
Specifically, as shown in fig. 2, the second light-absorbing part 14 is located between the side light source and the third collimating lens 12, the second light-absorbing part 14 is provided with a light-passing hole through which light from the side light source passes, and light emitted from the side light source is incident on the third collimating lens 12 through the light-passing hole; the third light-absorbing part 15 is arranged between the end light source 3 and the first collimating lens 10, and the fourth light-absorbing part 16 is arranged between the second collimating lens 11 and the light inlet end of the emergent optical cable 2.
Wherein, the end light source 3 and the side light source are both monochromatic light emitters with the half-peak width not more than 100nm, so as to accurately adjust the spectrum. The radiation energy of all light sources can act on the light inlet end of the emergent optical cable 2 at the same time, and the system has high efficiency without cutoff and switching. The light source device has wide spectral distribution, basically covers visible light wave bands, can emphatically display blood vessel information of different depths according to requirements, and can be matched with a white light source with high color rendering index.
Example two
The structure principle of this embodiment is basically the same as that of the first embodiment, and the difference is that a plurality of side light sources are arranged from back to front in sequence according to the wavelengths of the light emitted by the side light sources from short to long, and the wavelength of the light emitted by the end light source is smaller than that of the light emitted by the side light source.
The wavelength of light emitted by the light source is set to be lambda 1, the boundary wavelength of the transmission wavelength and the reflection wavelength of the transflector is set to be lambda 2, when lambda 1 is smaller than lambda 2, the light emitted by the light source is transmitted through the transflector, and when lambda 1 is larger than lambda 2, the light emitted by the light source is reflected by the transflector. That is, the transflective body in the present embodiment reflects light having a wavelength longer than a boundary wavelength between a transmission wavelength and a reflection wavelength of the transflective body, and transmits light having a wavelength shorter than the boundary wavelength between the transmission wavelength and the reflection wavelength of the transflective body.
Specifically, the number of the side light sources in this embodiment is 3: by last first side light source 4, second side light source 5 and the third side light source 6 that sets gradually before, the transflector is 3: a first transflector 7 arranged opposite to the first side light source 4, a second transflector 8 arranged opposite to the second side light source 5 and a third transflector 9 arranged opposite to the third side light source 6, wherein the first transflector 7, the second transflector 8 and the third reflector are plate-shaped, the first transflector 7, the second transflector 8 and the third reflector are dichroic mirrors, and the dichroic mirrors are coated glass slides.
The wavelength of the light emitted by the end light source 3 is smaller than the boundary wavelength of the reflection wavelength and the transmission wavelength of the first transflector 7, the boundary wavelength of the reflection wavelength and the transmission wavelength of the first transflector 7 is smaller than the wavelength of the light emitted by the first side light source 4, the wavelength of the light emitted by the first side light source 4 is smaller than the boundary wavelength of the reflection wavelength and the transmission wavelength of the second transflector 8, the boundary wavelength of the reflection wavelength and the transmission wavelength of the second transflector 8 is smaller than the wavelength of the light emitted by the second side light source 5, the wavelength of the light emitted by the second side light source 5 is smaller than the boundary wavelength of the reflection wavelength and the transmission wavelength of the third transflector 9, and the boundary wavelength of the reflection wavelength and the transmission wavelength of the third transflector 9 is smaller than the wavelength of the light emitted by the third side light source 6.
The light emitted from the end light source 3 transmits through the first, second, and third transflector 7, 8, and 9, the light emitted from the first side light source 4 is reflected by the first transflector 7 and then transmits through the second and third transflector 8 and 9, and the light emitted from the second side light source 5 is reflected by the second transflector 8 and then transmits through the third transflector 9.
In this embodiment, the wavelength of the light emitted from the end light source 3 is 380-440 nm, the wavelength of the light emitted from the first side light source 4 is 430-470 nm, the wavelength of the light emitted from the second side light source 5 is 500-550 nm, and the wavelength of the light emitted from the third side light source 6 is 600-660 nm.
The light-emitting end of the end light source 3 is provided with a first collimating lens 10, the light-entering end of the emergent optical cable 2 is provided with a second collimating lens 11, and the light-emitting end of the side light source is provided with a third collimating lens 12. The first collimating lens 10 converts the light emitted by the end light source 3 into parallel light beams; the number of the collimating lenses III 12 is equal to that of the lateral light sources, and the collimating lenses III are arranged in a one-to-one correspondence manner, so that light rays emitted by the lateral light sources are changed into parallel light beams; the second collimating lens 11 couples the parallel light beams passing through into the outgoing optical cable 2. The first collimating lens 10 can be a plurality of pieces to form a collimating lens group, the second collimating lens 11 can be a plurality of pieces to form a collimating lens group, and the third collimating lens 12 corresponding to each side light source can be a plurality of pieces to form a collimating lens group.
The end light source 3 and the side light sources are all monochromatic light emitters with the half-peak width not more than 100nm, wherein the light source brightness of the end light source 3 can be finely adjusted within the output range of 0-100%, the light source brightness of each side light source can be finely adjusted within the output range of 0-100%, the brightness of each light source is independently adjusted and is not influenced by the adjustment of other light sources, and the adjustment mode is realized by changing the voltage at two ends of the light source. The radiation energy of all light sources can act on the light inlet end of the emergent optical cable 2 at the same time, and the system has high efficiency without cutoff and switching. The light source device has wide spectral distribution, basically covers visible light wave bands, can emphatically display blood vessel information of different depths according to requirements, and can be matched with a white light source with high color rendering index.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A multimode endoscope light source device comprises a box body (1) and an outgoing optical cable (2), wherein a light inlet end of the outgoing optical cable (2) extends into the box body (1), and the multimode endoscope light source device is characterized in that an end light source (3) and a plurality of side light sources are arranged in the box body (1), the end light source (3) and the light inlet end are arranged oppositely, the side light sources are located on the side portion of a connecting line of the end light source (3) and the light inlet end and are sequentially arranged along the connecting line, a plurality of transparent reflectors which are equal in number to the side light sources and are arranged in a one-to-one correspondence mode and used for reflecting light rays emitted by the side light sources which are correspondingly arranged to the end light sources to the light inlet end are arranged between the end light source (3) and the light inlet end, and the transparent reflectors transmit light rays reflected by all the transparent reflectors located at the rear portion of the transparent reflectors.
2. The multimode endoscope light source device of claim 1, wherein the number of side light sources is 2-6; the plurality of side light sources are sequentially arranged from back to front according to the wavelength of light emitted by the side light sources from long to short, and the wavelength of light emitted by the end light source (3) is greater than that of light emitted by the side light sources.
3. A multimode endoscope light source device according to claim 2 and characterized in that said side light sources are 3: by last first side light source (4), second side light source (5) and the third side light source (6) that set gradually before back, the transflector be 3: the light source device comprises a first transflector (7) arranged opposite to a first side light source (4), a second transflector (8) arranged opposite to a second side light source (5) and a third transflector (9) arranged opposite to a third side light source (6), wherein the wavelength of light emitted by the end light source (3) is greater than the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflector (7), the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflector (7) is greater than the wavelength of light emitted by the first side light source (4), the wavelength of light emitted by the first side light source (4) is greater than the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflector (8), the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflector (8) is greater than the wavelength of light emitted by the second side light source (5), and the wavelength of light emitted by the second side light source (5) is greater than the reflection wavelength of light emitted by the third transflector (9) The boundary wavelength of the transmission wavelength is larger than the wavelength of the light emitted by the third side light source (6) when the boundary wavelength of the reflection wavelength and the transmission wavelength of the third transflector (9) is larger than the boundary wavelength of the transmission wavelength.
4. A multimode endoscope light source device according to claim 3, characterized in that the wavelength of the light emitted from said end light source (3) is 600-660 nm, the wavelength of the light emitted from said first side light source (4) is 500-550 nm, the wavelength of the light emitted from said second side light source (5) is 430-470 nm, and the wavelength of the light emitted from said third side light source (6) is 380-440 nm.
5. The multimode endoscope light source device according to claim 4, characterized in that the boundary between the transmission wavelength and the reflection wavelength of the first transflector (7) is half of the sum of the wavelength of the light emitted by the end light source (3) and the wavelength of the light emitted by the first side light source (4), the boundary between the transmission wavelength and the reflection wavelength of the second transflector (8) is half of the sum of the wavelength of the light emitted by the first side light source (4) and the wavelength of the light emitted by the second side light source (5), and the boundary between the transmission wavelength and the reflection wavelength of the third transflector (9) is half of the sum of the wavelength of the light emitted by the second side light source (5) and the wavelength of the light emitted by the third side light source (6).
6. A multimode endoscope light source device according to claim 2, characterized in that several of said lateral light sources are arranged in sequence from short to long in the wavelength of the light emitted therefrom, the wavelength of the light emitted from said end light source (3) being smaller than the wavelength of the light emitted from the lateral light sources.
7. A multimode endoscope light source device according to claim 6 and characterized by the fact that said side light sources are 3: by last first side light source (4), second side light source (5) and the third side light source (6) that set gradually before back, the transflector be 3: the light source device comprises a first transflector (7) arranged opposite to a first side light source (4), a second transflector (8) arranged opposite to a second side light source (5) and a third transflector (9) arranged opposite to a third side light source (6), wherein the wavelength of light emitted by the end light source (3) is smaller than the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflector (7), the dividing wavelength of the reflection wavelength and the transmission wavelength of the first transflector (7) is smaller than the wavelength of light emitted by the first side light source (4), the wavelength of light emitted by the first side light source (4) is smaller than the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflector (8), the dividing wavelength of the reflection wavelength and the transmission wavelength of the second transflector (8) is smaller than the wavelength of light emitted by the second side light source (5), and the wavelength of light emitted by the second side light source (5) is smaller than the reflection wavelength of the reflection wavelength and the transmission wavelength of the third transflector (9) And the boundary wavelength of the transmission wavelength of the third transflector (9) is smaller than the wavelength of the light emitted by the third side light source (6).
8. A multimode endoscope light source device according to claim 1, characterized in that the light exit end of the end light source (3) is provided with a first collimating lens (10), the light entrance end of the light exit cable (2) is provided with a second collimating lens (11), and the light exit end of the side light source is provided with a third collimating lens (12).
9. A multimode endoscope light source device according to claim 1, characterized in that said housing (1) is provided with a first light absorbing portion (13) for absorbing unwanted light, disposed opposite to said plurality of side light sources.
10. A multimode endoscope light source device according to claim 9, characterized in that said housing (1) is further provided with a second light-absorbing portion (14), a third light-absorbing portion (15) and a fourth light-absorbing portion (16), said second light-absorbing portion (14) being provided at a plurality of side light sources, said third light-absorbing portion (15) being provided at the end light source (3), said fourth light-absorbing portion (16) being provided at the exit optical cable (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378758.3U CN210990153U (en) | 2019-08-23 | 2019-08-23 | Multimode endoscope light source device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921378758.3U CN210990153U (en) | 2019-08-23 | 2019-08-23 | Multimode endoscope light source device |
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| CN210990153U true CN210990153U (en) | 2020-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110367916A (en) * | 2019-08-23 | 2019-10-25 | 重庆金山医疗技术研究院有限公司 | Multimode endoscope light source unit |
| CN114305301A (en) * | 2022-03-09 | 2022-04-12 | 杭州康基医疗器械有限公司 | LED medical endoscope fluorescent cold light source |
-
2019
- 2019-08-23 CN CN201921378758.3U patent/CN210990153U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110367916A (en) * | 2019-08-23 | 2019-10-25 | 重庆金山医疗技术研究院有限公司 | Multimode endoscope light source unit |
| CN114305301A (en) * | 2022-03-09 | 2022-04-12 | 杭州康基医疗器械有限公司 | LED medical endoscope fluorescent cold light source |
| CN114305301B (en) * | 2022-03-09 | 2022-06-17 | 杭州康基医疗器械有限公司 | LED medical endoscope fluorescent cold light source |
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