CN1895158B - Endoscope light source unit - Google Patents
Endoscope light source unit Download PDFInfo
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- CN1895158B CN1895158B CN2006101002457A CN200610100245A CN1895158B CN 1895158 B CN1895158 B CN 1895158B CN 2006101002457 A CN2006101002457 A CN 2006101002457A CN 200610100245 A CN200610100245 A CN 200610100245A CN 1895158 B CN1895158 B CN 1895158B
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Abstract
An endoscope light source unit for making illumination light incident on an incident end face of a light guide connected thereto, includes an aperture device having aperture openings of different opening ratios, for selectively positioning one of the aperture openings between the incident end face of the light guide and the light source; a reading device for reading information on an illumination light quantity limit from a memory provided in a scope connected to the endoscope light source unit; and a controller for selecting an opening ratio of the aperture device in accordance with the information on the illumination light quantity limit read by the reading device, wherein the controller controls the aperture device so as not to position any of the aperture openings, which have an opening ratio higher than the selected opening ratio, between the incident end face of the light guide and the light source.
Description
Technical field
The present invention relates to be applicable to the endoscope light source unit of endoscope or fujinon electronic video endoscope.
Background technology
Recently electronic endoscope system has the processor of band built-in light source device, has the Electrofax (electronic camera) that is installed in its far-end or only guides the fujinon electronic video endoscope (electronic scope) of the fibre opic endoscope (fiber scope) of observation to link to each other so that use with described light source by optical element.Particularly, the varied in thickness that provides fujinon electronic video endoscope to be used to broad, and its function is suitable for different observation places.Processor that can link to each other and fibre opic endoscope with polytype fujinon electronic video endoscope also must have can with the light supply apparatus of described multiple fujinon electronic video endoscope and fibre opic endoscope compatibility.For this reason, traditional light supply apparatus is constructed to necessary light quantity can be provided for the fujinon electronic video endoscope that needs maximum amount.
Described light supply apparatus is configured to make the illumination light of sending from high-intensity lamp by collecting lens optically focused, and incides fiberscope with light guide (scope light guide), is generally on the incident end face of fibre bundle.Owing to type and the observation place of necessary illumination light quantity along with fujinon electronic video endoscope changes, so be equipped with the iris apparatus that is used for mechanically regulating light quantity to light supply apparatus.A kind of in the known iris apparatus comprises by the part of portions cut with the part of this portions cut and forms the diaphragm (diaphragm) that whole arm portion is formed that it has the size that all are blocked from the light of illuminator; And can with the motor of described arm portion mechanical connection.Described motor rotates, rotates described diaphragm with the top around arm portion, thereby regulates exposure (is the openly Japanese patent application of 2003-305008 referring to publication number).And, the light shielding plate that has a plurality of aperture openings can be provided, described diaphragm hole has different boring ratio rate (opening ratio) or transmittance, to form the aperture board of rotation, described aperture board by between the incident end face that a diaphragm hole optionally is placed on light supply apparatus and endoscope's photoconduction (scope light guide) (promptly, be put in the illumination path), regulate the light quantity on the incident end face that incides photoconduction.
Described light supply apparatus adopts high brightness lamp, for example metal halide lamp or xenon lamp.The brightness that this light fixture has is high more, and the hot composition that illumination light comprises is just many more.Thereby according to the type of endoscope (scope), described light supply apparatus can have too high intensity, and because the hot composition of illumination light can also heat the end of endoscope, unless the light quantity of light supply apparatus is reduced (turn down).
Some light supply apparatuses are exciting light coil apparatus but regulate picture brightness by the speed of regulating electronic shutter not.In this light supply apparatus, having well-lit picture (image) can obtain by increasing electronic shutter speed, and the light quantity of too high illumination light can heat the end of photoconduction, i.e. the end of endoscope.Under the situation of artificial brightness regulation, also can produce identical problem.
In addition, when endoscope was connected with it, traditional light source also can be opened, and this situation causes some problems sometimes, revealed because the illumination light of maximum can connect jack from photoconduction.
Summary of the invention
The present invention has considered the problems referred to above of prior art and has realized.The invention provides a kind of endoscope light source unit, it can regulate the maximum of illumination light according to the amount of admissible illumination light in coupled endoscope.
The invention provides a kind of endoscope light source unit, it allows the safe handling of endoscope, even under the amount condition of unknown of illumination for endoscope light, and when endoscope does not link to each other with endoscope light source unit, also can reduce the influence that illumination light is revealed.
According to an aspect of the present invention, a kind of endoscope light source unit is provided, it incides on the incident end face of coupled photoconduction the illumination light from light source, described endoscope light source unit comprises iris apparatus, it has the different diaphragm hole of a plurality of boring ratio rates, optionally a diaphragm hole is positioned between the incident end face and light source of photoconduction; Reading device is used for reading the information of the illumination light quantity restriction of the memorizer that provides from the endoscope that links to each other with described endoscope light source unit; And controller, be used for the boring ratio rate of coming the selective light coil apparatus according to the information of the illumination light quantity restriction of the memorizer that reads by described reading device, wherein said controller is controlled described iris apparatus, and it is not positioned at any diaphragm hole with boring ratio rate higher than selected boring ratio rate between the incident end face and light source of photoconduction.
The information of preferred illumination light quantity restriction aspect comprises identifying information, and it is measured in advance and set according to light quantity and temperature.
The preferred light coil apparatus comprises disk and is used for rotatably driving the driving device of described disk that the diaphragm hole with different aperture ratios forms with angle same at interval around its center of rotation in disk.Described controller accessory drive makes a diaphragm hole and crossing at the incident end face and the illumination path between the light source of photoconduction.
Preferred each diaphragm hole is included in a plurality of apertures that form with predetermined space in the disk; And the boring ratio rate is measured by the different densities of aperture.
Preferred each diaphragm hole is included in a plurality of apertures that form with predetermined space in the disk; And the boring ratio rate is measured by the different-diameter of aperture.
Preferred each diaphragm hole is included in a plurality of apertures that form with predetermined space in the disk; And the boring ratio rate is measured by the different densities and the diameter of aperture.
Preferred aperture has circular shape.
Preferred aperture has polygonal shape.
Preferred endoscope light source unit comprises the initial position detecting sensor of the initial position of test disks, and wherein the boring ratio rate is more crossing with incident end face and the illumination path between the light source at photoconduction at initial position than one in the little a plurality of diaphragm holes of largest hole ratio.The largest hole ratio of the diaphragm hole of disk is to prevent that a large amount of illumination light from passing the boring ratio rate of disk, so that provide safe light quantity for any fujinon electronic video endoscope that can link to each other with endoscope light source unit.Preferred controller drives described driving device so that the disk rotation, thereby make one in a plurality of diaphragm holes crossing with incident end face and the illumination path between the light source at photoconduction.
Preferably have the diaphragm hole of largest hole ratio or have and intersect in initial position and at the incident end face of photoconduction and the illumination path between the light source less than one in the diaphragm hole of largest hole ratio.
In one embodiment, a kind of endoscope light source unit is provided, be used to make the incident end face that incides coupled photoconduction from the illumination light of light source, described endoscope light source unit comprises the iris apparatus of the diaphragm hole with a plurality of different boring ratio rates, is used for optionally one of diaphragm hole being positioned between the incident end face and light source of photoconduction; Reading device is used for reading the information of the illumination light quantity restriction aspect of coming the memorizer that the comfortable endoscope that links to each other with endoscope light source unit provides; And controller, be used for the boring ratio rate of coming the selective light coil apparatus according to the information that reads by reading device, its middle controller control iris apparatus is positioned between the incident end face and light source of photoconduction its any diaphragm hole that will not have the boring ratio rate higher than selected boring ratio rate.Under reading device can not read situation from the information aspect the illumination light quantity restriction of memorizer, described controller was selected the boring ratio rate littler than the largest hole ratio of iris apparatus.
Under the situation that controller is determined by the reading device that does not have endoscope to link to each other with endoscope light source unit, preferred controller is selected the boring ratio rate littler than the largest hole ratio of iris apparatus.
Under the situation that the reading device that controller links to each other with endoscope light source unit by fibre opic endoscope is determined, preferred controller is selected the boring ratio rate littler than the largest hole ratio of iris apparatus.
The information of preferred illumination light quantity restriction aspect comprises identifying information, and it is measured and set according to light quantity and temperature in advance.
The preferred light coil apparatus comprises disk and is used for rotatably driving the driving device of described disk that the diaphragm hole with different aperture ratios forms with angle same at interval around its center of rotation in disk.The controller accessory drive makes one of diaphragm hole and crossing at the incident end face and the illumination path between the light source of photoconduction.
Preferred endoscope light source unit comprises the initial position detecting sensor of the initial position of test disks, and wherein the boring ratio rate is more crossing with incident end face and the illumination path between the light source at photoconduction at initial position than one in the little a plurality of diaphragm holes of largest hole ratio.The largest hole ratio of the diaphragm hole of disk is to prevent that a large amount of illumination light from passing the boring ratio rate of disk, so that provide safe light quantity for any fujinon electronic video endoscope that can link to each other with endoscope light source unit.Preferred controller drives described driving device so that the disk rotation, thereby make one in a plurality of diaphragm holes crossing with incident end face and the illumination path between the light source at photoconduction.
Preferably have the diaphragm hole of largest hole ratio or have and intersect in initial position and at the incident end face of photoconduction and the illumination path between the light source less than one in the diaphragm hole of largest hole ratio.
Preferred endoscope light source unit is included as the master switch that controller provides electric power; With the lamp switch that is used to open light source.When master switch was connected, controller read the information of illumination light quantity restriction aspect, the selecting hole ratio, and drive described driving device, the diaphragm hole of the iris apparatus with selected boring ratio rate and the incident end face and the illumination path between the light source of photoconduction are intersected.
Preferred endoscope light source unit comprises display device, is used for the result that display controller is determined.
According to the present invention, according to the Information Selection boring ratio rate or the transmittance of the endoscope that links to each other, and control, so that diaphragm hole is not set to than selected boring ratio rate or higher boring ratio rate or the transmittance of transmittance.Therefore, even the endoscope that links to each other has high maximum, it also may prevent from owing to light quantity is excessive the endoscope tip excessive temperature to be raise.Even the endoscope that links to each other has low maximum, also may obtain enough light quantities.
In addition,, in the time can not reading aperture information, select largest hole ratio or low boring ratio rate or the transmittance of maximum transmission degree, thereby avoid the light quantity of shining excessive than aperture according to the present invention.
Description of drawings
Describe the present invention below with reference to accompanying drawings, wherein:
Fig. 1 shows the overall front view of the embodiment of processor, and endoscope light source unit according to the present invention is applied to described processor;
Fig. 2 is the simplification profile of the line II-II in Fig. 1, shows the element that described processor is essential;
Fig. 3 shows the block diagram of the essential circuit of treatment in accordance with the present invention device;
Fig. 4 is the sketch map of the fujinon electronic video endoscope that can link to each other with the treatment in accordance with the present invention device;
Near the key diagram of a plurality of assemblies that provide the light supply apparatus of described processor is provided Fig. 5;
Fig. 6 is the front view according to the rotatable aperture board of the iris apparatus of light supply apparatus of the present invention;
Fig. 7 shows the flow chart of the first half first embodiment of the control operation that is used for processor illumination;
Fig. 8 shows the flow chart of the second half first embodiment of the control operation shown in Fig. 7;
Fig. 9 shows the flow chart of the first half second embodiment of the control operation that is used for processor illumination;
Figure 10 shows the flow chart of the second half second embodiment of the control operation shown in Fig. 9.
The specific embodiment
With reference to the accompanying drawings embodiments of the invention are described.Fig. 1 shows the front view of processor (endoscope light source unit) 10, and it contains uses power supply module of the present invention.Fig. 2 is the simplification profile of the line II-II in Fig. 1, and the essential assembly of processor 10 is shown.
Have endoscope's jack 11 and endoscope's locking bar (scope lock lever) 12 processor 10 and be provided at the place ahead (as shown in Figure 1) of figure, the adapter 104 of fujinon electronic video endoscope 100 will be inserted into endoscope's jack 11 (see figure 4)s, and endoscope's locking bar 12 is used to lock the adapter 104 of insertion to avoid disengaging.Endoscope's jack 11 has been provided by being connected of the connecting pin that provides in the adapter 104 with fujinon electronic video endoscope 100 or analog.The photoconduction jack 13 of the optical connector 115 of the fujinon electronic video endoscope 100 (or fibre opic endoscope) that is used to be inserted into forms below endoscope's jack 11.
Described processor 10 also has the guidance panel 14 that is positioned at front, endoscope's jack 11 next doors.This guidance panel 14 provides console switch, for example lamp switch 16, picture quality by-pass cock (picture quality adjusting button) 17, photocontrol selector switch (photocontrol selector button) 18, manual adjustments switch 19 and endoscope information display 20.Be used for mobile memory card be written into wherein memory card slot 21 and master switch 15 also be formed at guidance panel 14 below.
As shown in Figure 2, processor 10 also comprises lamp power supply 24, and it has the igniting portion (igniter) 25 that is used to open light source 23.The cooling fan 26 that is used for cool down lamp power supply 24 forms on the rear board of described processor 10.
In processor 10, storage clamp 27 is arranged near the memory card slot 21.Storage clamp 27 is electrically connected with storage card in being loaded in memory card slot 21, and controls the read/write of storage card as interface circuit.For example, read/write control comprises the information that writes in the described storage card that reads in, and the information of the image information of will be for example being handled by processor 10 writes in the storage card.Processor 10 also comprises panel 28, and for example circuit of control circuit (controller/reading device) 41 and image processing circuit is installed thereon.The work of control circuit 41 control entire process devices 10 comprises the control of storage clamp 27 and aperture board drive motors 22.The image processing circuit of panel 28 reads canned data from the EEPROM (memorizer) 109 of fujinon electronic video endoscope 100, drive the ccd sensor (image pick-up device) 105 of fujinon electronic video endoscope 100, the picture signal that processing is obtained by ccd sensor 105, and on monitor display 43 picture signal of display process.Export from the picture adapter (not shown) that is arranged on the rear board substrate 29 by the picture signal that panel 28 is handled.Then, on monitor display 43, show predetermined pictures.
Fig. 3 shows the essential assembly of the circuit structure of processor 10.Endoscope's interface 31 is arranged on endoscope's jack 11 inboards.Endoscope's interface 31 is provided with a plurality of adapters, comprises information adapter and picture adapter.The information adapter is used for reading in the information that the EEPROM 109 of fujinon electronic video endoscope 100 writes.The drive clock of picture adapter transmission of CCD pick off 105, and input is by the picture signal of ccd sensor 105 outputs.Each adapter links to each other with each respective terminal, for example those control circuits 41 that form on control substrate 28.
Endoscope's locking switch 32 is to be used to detect the sense switch whether endoscope's locking bar 12 is in the lock state.The status signal of endoscope's locking switch 32 is imported in the control circuit 41.
Be used for rotatably driving driving and the control that the aperture board drive motors 22 that rotates aperture board 50 is controlled circuit 41.The position of rotation of rotation aperture board 50 is detected by aperture position pick off (initial position detecting sensor) 33, and control circuit 41 receptions are by the signal of its detection.
Control circuit 41 reads the aperture relevant information through endoscope's interface 31 from the EEPROM 109 of fujinon electronic video endoscope 100, and selects the largest hole ratio of rotation aperture board 50 when regulating the amount of illumination light.In this case, endoscope's interface 31 plays reading device.
Control circuit 41 also carries out image capture process, is used to drive the ccd sensor 105 of fujinon electronic video endoscope 100, and through the picture signal of endoscope's interface 31 inputs from ccd sensor 105.In addition, control circuit 41 also carries out the predetermined picture signal processing, and on monitor display 43 display image signals, perhaps its view data is write storage card 42 through clamp 27.Should be appreciated that when master switch 15 is opened if control circuit 41 beginning image capture process, image capture process is carried out by the image processing circuit that is independent of control circuit 41 usually so.
Control circuit 41 also links to each other via the input equipment of I/F circuit 39 with for example keyboard, and the required individual information of splanchnoscopy can be imported by input equipment.
Fig. 4 shows the schematic diagram of the fujinon electronic video endoscope 10 that links to each other with processor 10.As shown in Figure 4, fujinon electronic video endoscope 100 has flexible insertion portion 101 and operation part 102.Adapter 104 is arranged on the top of the general-purpose pipe (universal tube) 103 that stretches out from operation part 102.Ccd sensor 105 is arranged on the end of flexible insertion portion 101 with light-distribution lens (the light distribution lens) L1 that is used for optical illumination.Ccd sensor 105 links to each other with the CCD drive circuit 107 that forms in operation part 102 via the image line (picture line) 106 that passes insertion portion 101 layings.CCD drive circuit 107 also with pass linking to each other that operation part 102 and general-purpose pipe 103 lay with the image transmission line.Image transmission line 108 links to each other with the signal pin (pin) that forms in adapter 104.For example containing, the EEPROM 109 of the information of fujinon electronic video endoscope 100 types is provided with in operation part 102.The read/write line 110 that links to each other with the input and output side of EEPROM 109 links to each other with the signal pin of adapter 104.Operation part 102 also comprises the functional keys 111 that is used to gather operations such as mobile image and picked-up still image.Contact the switching line 112 that links to each other links to each other with signal pin in the adapter 104 with functional keys 111.
The exit end 113b of photoconduction 113 is arranged in the back of light-distribution lens L1.Photoconduction 113 is introduced into by insertion portion 101, operation part 102, general-purpose pipe 103 and adapter 104, and inserts and be fixed on photoconduction sleeve 114 inboards of protruding from adapter 104.The incident end face 113a of photoconduction 113 is relative with the open end of photoconduction sleeve 114.
The EEPROM 109 that provides in fujinon electronic video endoscope 100 comprises at least and is used to discern scope type, that is, and and the information of illumination for endoscope light quantity restriction.In this embodiment, according to the restriction of illumination light quantity, that is, allow the maximum amount of photoconduction 113 emissions that scope type is divided into step-type a plurality of groups.In the present embodiment, scope type is divided into three groups according to the descending of light quantity, that is, and A type, Type B and C type.
Fig. 5 shows the sketch map of a plurality of assemblies that are provided with near the light source 23 of processor 10.As shown in Figure 5, rotation aperture board 50 is inserted into the incident end face 113a of photoconduction sleeve 114 (photoconduction 113) and is arranged between the collecting lens L of light source 23 fronts, and wherein photoconduction sleeve 114 inserts from photoconduction jack 13.Incident end face 113a usually with vertical setting of optical axis O of collecting lens L, and leave the focal point F of collecting lens L.Assemble at the focal point F place by collecting lens L by the substantially parallel illumination light that lamp 35 sends, make the light beam that passes rotation aperture board 50 accumulate in the focal point F place, after this disperse, thereby incide on the incident end face 113a.Be conducted through photoconduction 113 from the incident illuminating bundle of incident end face 113a, and penetrate from the exit end 113b (see figure 4) that is arranged on insertion portion 101 ends.The light that sends passes light-distribution lens L1 then and distributes (Fig. 4), with illumination target.
Fig. 6 is the front view of rotation aperture board 50 of the iris apparatus of light source 23.As shown in Figure 6, rotation aperture board 50 is made by aluminum dish 50a.It is on the rotating shaft of aperture board drive motors 22 at center that dish 50a is fixed in center of rotation 50b.Dish 50a has 12 holes that form with predetermined circle interval (with the intervals of 30 degree) around center of rotation 50b.In an illustrated embodiment, dish 50a is provided with the first to the 11 diaphragm hole 51a to 51k and auxiliary lamp hole 53.The first diaphragm hole 51a has 70% boring ratio rate.The boring ratio rate is defined as reducing from the clockwise stepping of the first diaphragm hole 51a.The second to the 11 diaphragm hole 51b has 50%, 35%, 25%, 18%, 13%, 9%, 7%, 5%, 3.5% and 2% boring ratio rate respectively to 51k.Auxiliary lamp hole 53 has 100% boring ratio rate.
In the fujinon electronic video endoscope 100 of illustrated embodiment, type A is corresponding with the light quantity when the diaphragm hole 51a with largest hole ratio of 75% is set, type B is corresponding with the light quantity when the diaphragm hole 51b with largest hole ratio of 50% is set, and the light quantity of Type C during with the diaphragm hole 51c that has 35% largest hole ratio when setting is corresponding.
In an illustrated embodiment, the first to the 11 diaphragm hole 51a and 51k have a large amount of apertures 52 that form with predetermined space in each bore region.Illumination light is passed these apertures 52 or is blocked by the surface that dish 50a does not form aperture 52.
In an embodiment, different boring ratio rates realize to the density (at interval) of the aperture 52 of 51k by modification the first to the 11 diaphragm hole 51a.Alternatively, density (at interval) can keep constant, and the first to the 11 diaphragm hole 51a can change to the diameter of the aperture 52 of 51k.Alternatively, the first to the 11 diaphragm hole 51a can change to the density (at interval) and the diameter both of the aperture 52 of 51k.Aperture 52 can have Any shape.Each the first to the 11 diaphragm hole 51a perhaps can have difform separately aperture to the mixing that 51k can provide the aperture of different shape.Although circular aperture forms and be easy to change its diameter easily, also can adopt polygon and other shape.Compare with round-shaped, polygonal shape provides higher boring ratio rate easily.
Aperture position pick off 33 can be a photo-coupler, and wherein, when rotation aperture board 50 was positioned at initial position, the light path of photo-coupler was opened in aperture position hole 54; And dish 50a blocks the light path of photo-coupler.In the present embodiment, initial position refers to the 3rd diaphragm hole 51c and enters (intersecting) illumination path.
Notice that alternatively, the initial position of rotation aperture board 50 can be determined, and makes the diaphragm hole 52d lower than the boring ratio rate of diaphragm hole 51c be arranged in illumination path to one of 51k on position of rotation.Thereby the initial position of rotation aperture board 50 from diaphragm hole 51d to one of 51k is rotated, and 51c is arranged in illumination path up to diaphragm hole.
As shown in Figure 5, processor 10 has the fill-in light 44 of starting working when the lamp 35 of light source 23 extinguishes owing to some reasons.When control circuit 41 detected lamp 35 and extinguishes, control circuit 41 starting fill-in light driving mechanisms 45 so that fill-in light 44 is placed illumination path, and were opened fill-in light.Control circuit 41 rotation rotation aperture boards 50 make auxiliary lamp hole 53 enter (intersecting) illumination path.
With reference to the work of describing electronic endoscope system at the flow chart of work (power-on) process shown in Fig. 7 and 8.This work process relates to the operation of control circuit 41.When master switch 15 was connected, control circuit 41 entered this work process.
When entering work process, control circuit 41 is the state (step S11) of initialization rotation aperture board 50 at first.In the present embodiment, initialization refers to rotation rotation aperture board 50, makes the 3rd diaphragm hole 51 with 35% boring ratio rate enter (intersecting) illumination path.
Thereafter, whether control circuit 41 check endoscopies are mounted (step S13).In this embodiment, if endoscope's locking switch 32 is in connection, then can determine to have installed endoscope.If endoscope's (step S13 is) has been installed, then the endoscope of An Zhuaning and processor are carried out endoscope to the communicating by letter of processor, to import endoscope information (step S15).Endoscope information comprises and illumination light quantity relevant information at least, that is, and and a kind of in the C of scope type A in an illustrated embodiment.
Based on the input endoscope information, whether control circuit 41 check endoscopies are A type endoscope (step S17), Type B endoscope (step S21) or C type endoscope (step S25).
Be (S17 is) under the situation of A type in endoscope, control circuit 41 is selected 75% maximum ring boring ratio rate (step S19).In endoscope be under the situation of Type B (S17, not; S21 is), control circuit 41 is selected 50% maximum ring boring ratio rate (step S23).In endoscope be under the situation of C type (S17, not; S21, not; S25 is), control circuit 41 is selected 35% maximum ring boring ratio rate (step S29).If the endoscope of installing be not among type A, B and the C any (S17, not; S21, not; S25, not), then control circuit 41 is showing " endoscope of non-compatibility " (step 29) in the endoscope information display device 20 or on the monitor display 43.Here the upper limit that selected largest hole ratio is handled as automatic light-operated system and manually the mesopore ratio is handled in photocontrol makes not to be set the boring ratio rate that is higher than selected boring ratio rate.This adjusting has been got rid of the delivery in hot weather that is caused by excessive illumination light and has been given birth to.
Control circuit carries out the stepping rotation to rotation aperture board 50, makes to set (step S31) with corresponding the first to the 11 diaphragm hole 51a of largest hole ratio that selectes to one of 51k in step S19, S23 or S29.After the first to the 11 diaphragm hole (aperture opening) 51a corresponding to selected largest hole ratio was set to one of 51k, when lamp 35 was closed, whether control circuit 41 inspection lamp switches 16 were operated (step S33).When lamp switch 16 is not operated, and control circuit 41 duplicate tests (step S33, not; Step S33).It should be noted that the lamp switch 16 according to illustrated embodiment is instant shut-ins.When lamp 35 was closed, if lamp switch 16 is operated, then control circuit 41 turned on the light 35, and when lamp 35 was opened, if lamp switch 16 is operated, then control circuit 41 cut out lamp 35.
When lamp switch 16 is operated (step S33 is), control circuit 41 35 (the step S35) that turn on the light.Thereafter, whether control circuit checking image quality adjustment switch 17 connects (step S37).If picture quality by-pass cock 17 is in connection, control circuit 41 carries out image quality adjustment then, and (step S37 is to proceed to step S41; Step S39 is; Step S41).If the picture quality by-pass cock is not in connection, then control circuit is ignored picture quality and is regulated, and proceed to step S41 (step S37, not; Step S41).
At step S41 place, the control circuit 41 automatic light-operated systems of check or manually photocontrol whether and by photocontrol selector switch 18 select.
If (step 41, automatically), then control circuit 41 checks whether increase, reduce or keep brightness (step S43) based on the brightness of the target image of being measured by control circuit 41 to select automatic light-operated system.In order to increase brightness (step S43 increases), that is, regulate towards overexposure, whether control circuit 41 check electronic shutters (electronic shutter) are set to 1/60 second minimum speed (step S45).If shutter speed has been set at 1/60 second, then control circuit 41 proceeds to step S63 simply, and this is because can not further slow down shutter speed (step S45; Be, S63).(step S45, not), then control circuit 41 is transferred to lower speed (step S47) with electronic shutter, and proceeds to step S63 if shutter speed is not set at 1/60.
In order to reduce brightness (step S43 reduces), that is, towards underexposed adjusting, whether control circuit 41 check electronic shutters are set to maximal rate (step S49).If electronic shutter is set to maximal rate (step S49 is), then control circuit 41 proceeds to step S63 simply.(step S49, not), then control circuit 41 is transferred to higher speed (step S51) with electronic shutter, and proceeds to step S63 if electronic shutter is not set to maximal rate.
In order to keep brightness (step S43 keeps), that is, exposure is not regulated, then control circuit 41 proceeds to step S63 simply.
If (step S41, manually), then whether control circuit 41 checks have selected the brightness increase, reduced or have kept (step S53) by manual adjustments switch 19 to select manual photocontrol.It should be noted that when having selected manual photocontrol in an illustrated embodiment, electronic shutter speed was fixed as 1/60 second.
If selected increase brightness (step S53 increases) by manual adjustments switch 19, then whether control circuit 41 check diaphragm hole ratios are set to maximum.If the diaphragm hole ratio is set to maximum (step S55 is), then control circuit 41 proceeds to step S63 simply.If the diaphragm hole ratio is not set to maximum (step S55, not), then control circuit 41 will rotate aperture board 50 and be transferred to higher diaphragm hole ratio, reach next level (step S57), and proceed to step S63.
If selected reduction brightness (step S53 reduces) by manual adjustments switch 19, then whether control circuit 41 check diaphragm hole ratios are set to minima (step S59).If the diaphragm hole ratio is set to minima (step S59 is), then control circuit 41 proceeds to step S63 simply.If the diaphragm hole ratio is not set to minima (step S59, not), then control circuit 41 changes the diaphragm hole ratios, that is to say, rotates this rotation aperture board 50, to being issued to next level (step S61), and proceeds to step S63.
If do not select (step S53 keeps) by manual adjustments switch 19, then control circuit 41 proceeds to step S63 simply.
At step S63 place, whether control circuit 41 checks lamp switch 16 when lamp 35 is opened is operated.(step S63, not), then control circuit 41 turns back to step S37 if lamp switch 16 is not operated.If lamp switch 16 is operated (step S63 is), then control circuit 41 cuts out lamp 35 (step S65), and turns back to step S33.
When master switch 15 disconnected, control circuit 41 cut out light source 23, and withdraws from via interrupt procedure.
As above, according to the present invention, the illumination light quantity is regulated based on the type of the endoscope that links to each other with processor 10.Thereby even the light quantity of the endoscope that links to each other is very high, the temperature that also might prevent endoscope tip is owing to excessive light raises.Even the maximum amount of the endoscope that links to each other is very low, also might obtain enough light quantities.
When installing when not having corresponding to scope type A, select the boring ratio rate lower than largest hole ratio to the fujinon electronic video endoscope of the information of C or fibre opic endoscope.This has eliminated the probability that causes the temperature rising owing to light is excessive.
Flow chart with reference to the optional work process shown in Fig. 9 and Figure 10 is described the second embodiment of the present invention.In a second embodiment, the process identical with the embodiment that shows in Fig. 7 and 8 represented by identical step numeral, and omitted its detailed description.
Be used to check and whether the fail checkout procedure of (step S15) of the communication of endoscope is carried out between step S14 and S17.If Communications failure (step S15 is), then control circuit 41 shows " not having endoscope " (step S16) on endoscope information display device 20 or monitor display 43, and setting largest hole ratio is 35% (step S29).If with the communication success (step S15 denys) of endoscope, then control circuit 41 is carried out from step S17 processing forward based on the endoscope information of input.
If with the Communications failure of endoscope, then the message that " does not have endoscope " is presented on endoscope information display device 20 or the monitor display 43.This makes the user might know the situation of the endoscope of installation, perhaps knows the endoscope that does not have endoscope information has been installed.(step S 17, not during not with scope type A, B or C information corresponding when the fujinon electronic video endoscope of installing or fibre opic endoscope; Step S21, not; Step S25, not), control circuit shows " incompatible endoscope " (step S27) on endoscope information display device 20 or monitor display 43, and selects 35% largest hole ratio (step S29).This has eliminated because the excessive probability that causes that temperature raises of light.When mensuration is not installed endoscope, also select the boring ratio rate lower than largest hole ratio, to reduce the illumination light quantity of revealing from photoconduction jack 13, if any, and reduce its environmental effect.In this case, (on endoscope information display equipment 20 or monitor display 43) demonstration shows the information of incompatible endoscope being installed or endoscope not being installed, to notify the user.
In a second embodiment, before step S63, increase step S62, and after step S63, increase step S64.In step S62, whether control circuit 41 check endoscopies remove, that is, whether endoscope's locking switch 32 detects unlocked state.If endoscope is removed (step S62 is), then control circuit 41 setting maximum ring boring ratio rates are 35%, and proceed to step S63.(step S62, not), then control circuit proceeds to step S63 simply if endoscope is not removed.
According to second embodiment, if determine that in the centre of work process endoscope is removed, then aperture is set to largest hole ratio 35%.If endoscope is removed, this can reduce the light quantity of leakage.
Obviously can change specific embodiment of the present invention described herein, this modification falls into the present invention's spirit and scope required for protection.Should be pointed out that all things that comprise all are exemplary, do not limit the scope of the invention here.
Claims (19)
1. endoscope light source unit, it incides on the incident end face of coupled photoconduction the illumination light from light source, and described endoscope light source unit comprises:
Iris apparatus, it has the different a plurality of diaphragm holes of boring ratio rate, is used for optionally making one of described diaphragm hole between the incident end face and described light source of described photoconduction;
Reading device is used for reading the information of the illumination light quantity restriction of the memorizer that provides from the endoscope that links to each other with described endoscope light source unit; And
Controller, be used for selecting the boring ratio rate of described iris apparatus according to the information of the described illumination light quantity restriction of reading by described reading device, wherein, described controller is controlled to described iris apparatus and does not make any described diaphragm hole with boring ratio rate higher than selected boring ratio rate between the described incident end face and described light source of described photoconduction.
2. endoscope light source unit according to claim 1, wherein, the described information of described illumination light quantity restriction comprises identifying information, it is measured in advance and sets according to light quantity and temperature.
3. endoscope light source unit according to claim 1, wherein, described iris apparatus comprises:
Disk and the driving device that is used for rotatably driving described disk, the described diaphragm hole with different aperture ratios forms with angle same thereon at interval around its center of rotation in described disk;
Wherein, described controller is controlled described driving device, and the described incident end face of one of described diaphragm hole and described photoconduction and the illumination path between the described light source are intersected.
4. endoscope light source unit according to claim 3, wherein, each described diaphragm hole is included in a plurality of apertures that form with predetermined space in the described disk; And
Wherein, described boring ratio rate is determined by the difference of described pore density.
5. endoscope light source unit according to claim 3, wherein, each described diaphragm hole is included in a plurality of apertures that form with predetermined space in the described disk; And
Wherein, described boring ratio rate is determined by the difference of described hole diameter.
6. endoscope light source unit according to claim 3, wherein, each described diaphragm hole is included in a plurality of apertures that form with predetermined space in the described disk; And
Wherein, described boring ratio rate is determined by described pore density and the different of diameter.
7. according to each the described endoscope light source unit in the claim 4 to 6, wherein, described aperture has round shape.
8. according to each the described endoscope light source unit in the claim 4 to 6, wherein, described aperture has polygonal shape.
9. endoscope light source unit according to claim 3 also comprises:
Detect the initial position detecting sensor of the initial position of described disk, wherein, the boring ratio rate intersects than one in the little described a plurality of diaphragm holes of largest hole ratio described incident end face and the described illumination path between the described light source at described initial position and described photoconduction;
Wherein, the described largest hole ratio of the described diaphragm hole of described disk is to prevent the boring ratio rate of a large amount of described illumination light through described disk, is used to any fujinon electronic video endoscope that can link to each other with described endoscope light source unit that safe light quantity is provided;
Wherein, described controller drives described driving device, so that described disk rotation, thereby make a described described incident end face and the described illumination path between the described light source in described a plurality of diaphragm hole crossing with described photoconduction.
10. endoscope light source unit according to claim 9, wherein, have the diaphragm hole of described largest hole ratio or less than described one in the described diaphragm hole of described largest hole ratio, intersect at the described incident end face and the described illumination path between the described light source of initial position and described photoconduction.
11. an endoscope light source unit is used to make the incident end face that incides coupled photoconduction from the illumination light of light source, described endoscope light source unit comprises:
Iris apparatus with the different a plurality of diaphragm holes of boring ratio rate is used for optionally making one of described diaphragm hole between the described incident end face and described light source of described photoconduction;
Reading device is used for reading the information of the illumination light quantity restriction of the memorizer that provides from the endoscope that links to each other with described endoscope light source unit; And
Controller, be used for selecting the boring ratio rate of described iris apparatus according to the described information that reads by described reading device, wherein, described controller is controlled to described iris apparatus and does not make any described diaphragm hole with boring ratio rate higher than selected boring ratio rate between the described incident end face and described light source of described photoconduction
Wherein, fetch under the situation of the described information failure of the illumination light quantity of described memorizer restriction in described readout means reads, described controller selects to be lower than the boring ratio rate of the largest hole ratio of described iris apparatus.
12. endoscope light source unit according to claim 11, wherein, described controller determined not have endoscope and situation that described endoscope light source unit links to each other via described reading device under, controller selected to be lower than the boring ratio rate of the described largest hole ratio of described iris apparatus.
13. endoscope light source unit according to claim 11, wherein, described controller was determined fibre opic endoscope and situation that described endoscope light source unit links to each other via described reading device under, described controller selected to be lower than the boring ratio rate of the described largest hole ratio of described iris apparatus.
14. endoscope light source unit according to claim 11, wherein, the information of described illumination light quantity restriction comprises identifying information, and it is measured in advance and set according to light quantity and temperature.
15. endoscope light source unit according to claim 11, wherein, described iris apparatus comprises:
Disk and the driving device that is used for rotatably driving described disk, the described diaphragm hole with different aperture ratios forms with angle same thereon at interval around its center of rotation in described disk; And
Wherein, described controller is controlled described driving device, and the described incident end face of one of described diaphragm hole and described photoconduction and the illumination path between the described light source are intersected.
16. endoscope light source unit according to claim 15 also comprises:
Detect the initial position detecting sensor of the initial position of described disk, wherein, have in described a plurality of diaphragm holes of the boring ratio rate littler one and intersect at initial position and at the incident end face and the illumination path between the light source of photoconduction than largest hole ratio;
Wherein, the described largest hole ratio of the described diaphragm hole of described disk is to prevent the boring ratio rate of a large amount of described illumination light through described disk, is used to any fujinon electronic video endoscope that can link to each other with described endoscope light source unit that safe light quantity is provided;
Wherein, described controller drives described driving device, so that described disk rotation, thereby make a described described incident end face and the described illumination path between the described light source in described a plurality of diaphragm hole crossing with described photoconduction.
17. endoscope light source unit according to claim 16, wherein, has the diaphragm hole of described largest hole ratio or intersect at the described incident end face of described initial position and described photoconduction and the described illumination path between the described light source less than described one in the described diaphragm hole of described largest hole ratio.
18. endoscope light source unit according to claim 15 also comprises:
The master switch of electric power is provided for described controller; With
Be used to connect the lamp switch of described light source,
Wherein, when described master switch is switched on, described controller reads the information of illumination light quantity restriction, the selecting hole ratio, and drive described driving device, the diaphragm hole of the described iris apparatus with selected boring ratio rate and the described incident end face and the described illumination path between the described light source of described photoconduction are intersected.
19. endoscope light source unit according to claim 11 also comprises display device, is used for the result that display controller is determined.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005196524A JP2007014412A (en) | 2005-07-05 | 2005-07-05 | Light source equipment for endoscope |
| JP2005196525A JP4694285B2 (en) | 2005-07-05 | 2005-07-05 | Endoscope light source device |
| JP2005-196525 | 2005-07-05 | ||
| JP2005196525 | 2005-07-05 | ||
| JP2005196524 | 2005-07-05 | ||
| JP2005-196524 | 2005-07-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1895158A CN1895158A (en) | 2007-01-17 |
| CN1895158B true CN1895158B (en) | 2010-07-21 |
Family
ID=37607912
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101002457A Expired - Fee Related CN1895158B (en) | 2005-07-05 | 2006-07-05 | Endoscope light source unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007014412A (en) |
| CN (1) | CN1895158B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009052524B4 (en) * | 2009-11-11 | 2019-07-11 | Schölly Fiberoptic GmbH | An endoscope |
| WO2011102199A1 (en) * | 2010-02-19 | 2011-08-25 | 富士フイルム株式会社 | Electronic endoscope system |
| CN106247197A (en) * | 2016-08-01 | 2016-12-21 | 上海澳华光电内窥镜有限公司 | A kind of light supply apparatus and control method |
| CN106580242B (en) * | 2016-12-30 | 2019-05-03 | 上海澳华光电内窥镜有限公司 | Endoscope light source unit |
| CN107065170B (en) * | 2017-05-12 | 2019-07-05 | 重庆金山医疗器械有限公司 | Fujinon electronic video endoscope light source optical path control system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60130713A (en) * | 1983-12-19 | 1985-07-12 | Olympus Optical Co Ltd | Stop device of light source device for endoscope |
| JPH02152104A (en) * | 1988-12-05 | 1990-06-12 | Fuji Photo Optical Co Ltd | Adjustment device for light quantity of light source |
| JP3260192B2 (en) * | 1993-01-26 | 2002-02-25 | 旭光学工業株式会社 | Light source device for endoscope |
| JP3722508B2 (en) * | 1995-02-01 | 2005-11-30 | オリンパス株式会社 | Endoscope light source device |
-
2005
- 2005-07-05 JP JP2005196524A patent/JP2007014412A/en not_active Withdrawn
-
2006
- 2006-07-05 CN CN2006101002457A patent/CN1895158B/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| JP特开2003-180631A 2003.07.02 |
| JP特开2003-305008A 2003.10.28 |
| JP特开平11-119115A 1999.04.30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007014412A (en) | 2007-01-25 |
| CN1895158A (en) | 2007-01-17 |
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