CN104698581B - Lighting device and stereomicroscope - Google Patents
Lighting device and stereomicroscope Download PDFInfo
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- CN104698581B CN104698581B CN201510124174.3A CN201510124174A CN104698581B CN 104698581 B CN104698581 B CN 104698581B CN 201510124174 A CN201510124174 A CN 201510124174A CN 104698581 B CN104698581 B CN 104698581B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/06—Means for illuminating specimens
- G02B21/08—Condensers
- G02B21/12—Condensers affording bright-field illumination
- G02B21/125—Condensers affording bright-field illumination affording both dark- and bright-field illumination
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Abstract
The present invention relates to stereomicroscope field.The present invention proposes a kind of stereomicroscope, stereomicroscope includes eyepiece, zoom body group, focus adjusting mechanism, platen and lighting device, lighting device includes light source, switching mechanism, block piece and thang-kng part, the light source is positioned over the space below observed sample, and the point of observation that the light source is located above sample is imaged beyond the region of light, the switching mechanism is used to making one of them of block piece and thang-kng part to be placed between light source and sample.The present invention is used to provide bright, dark-ground illumination to stereomicroscope, the consecutive variations of observation contrast can be achieved, it is adaptable to the observation of all kinds of samples.
Description
Technical field
It is specifically the improvement to its lighting device the present invention relates to a kind of stereomicroscope.
Background technology
At present, microscopical means of illumination species can be divided to " transmission-type illumination " and " falling to penetrate formula illumination " two major classes.The former fits
For transparent or semitransparent sample, the latter is then applied to nontransparent sample.
Dark ground microscope is the principle using dindar optical effect.When Ray Of Light passes through colloid, from incident light
Vertical direction is observed that one bright " path " of appearance in colloid, and this phenomenon is also dindar Tyndall phenomenon
Effect.
In flat No. 4-318804 of open patent, describe it is a kind of enter line skew illumination stereomicroscope through shine
Bright device, the light beam sent from light source is irradiated on speculum by collector lens, frosted glass, and speculum reflexes to light separately
On one collector lens, the sample being positioned on glass table plate is mapped to by the illumination of collector lens, and then light enters object lens
It is interior, by the angle for adjusting rotating mirror, thus it is possible to vary the dark portion of the pupil of left and right object lens and the ratio in bright portion.
In patent in fact public clear No. 41-5808, describe it is a kind of enter line skew illumination and dark field illumination it is stereoscopic aobvious
The transmission illumination device of micro mirror.The light that light source is sent is irradiated on speculum by collector lens, frosted glass, and speculum is by light
Reflex on another collector lens, the sample being positioned on glass table plate, and then light are mapped to by the illumination of collector lens
Into in object lens, the annex of the frosted glass for the position configuration being conjugated in the pupil of object lens has additional the blade of cut-out light beam, passes through
Adjust the upper-lower position of the conjugate image of the pupil of blade and object lens, changeable deflection illumination and dark field illumination.
As above described in two patents, the lighting device that method described above is obtained is applying to stereomicroscope observation sample
When, multiplying power has high to Low, and field range also has small to big change, when low power is observed, it is impossible to obtain good contrast, greatly
Reduce sample image quality greatly.Meanwhile, in order to increase field range simultaneously, it is desirable to which speculum must also increase, and so cause
The substructure height of the illuminator will increase, and sample face is just elevated.The development trend requirement of current stereomicroscope, visual field is most
Amount is big, and sample is as far as possible low, and the device can not meet microscopical demand for development.
In patent public clear No. 45-1105 in fact, a kind of lighting device for carrying out bright field and dark field is described.The light source
The underface of object lens and sample is placed in, in bright field illumination, the shadow shield directly over light source, the light sent from light source is opened
Line, direct irradiation is on sample.In dark field illumination, the shadow shield closed directly over light source blocks direct light and is irradiated to mark
This, light reflects by reflector, and reflected light oblique illumination forms dark-ground illumination on sample.
As described above, the lighting device that method described above is obtained, because light source is placed in the underface of object lens and sample, dark
During field illumination, some light is blocked not utilized, and part oblique ray is irradiated on reflector, reduces brightness of illumination,
Simultaneously because light path is short, in bright field illumination, uniform field range is obtained if desired and is filtered, it is necessary to be arranged above light source
The optical components such as device, the structure of such base just can accordingly increase, and raise sample placed side.
In patent CN1145820C, a kind of transmission illuminator for microscopes is described in such as claim 14.As bright
Visual field is observed, after the collimated light beam that the light that light source is projected forms substantially by condenser, is inclined to by deviation part (deviation reflective mirror),
Sample is illuminated.In this case, collector lens makes the emergent light axis of light source oliquely downward be tilted with relatively horizontal orientation
5 ° to 10 ° of inclination.When being observed as bright field, changeable part is deviation part, convex lens and diffuser plate.As
Dark field is observed, and part and the light after deviation is sideling irradiated sample the second deviation that the light projected by light source is inclined to upward
Light-blocking member.Light-blocking member reflects the light of the second deviation part reflection centered on optical axis to peripheral direction.
As described above, either bright-field or dark field, in order to improve brightness, it is necessary to set up collector lens and complicated
Light and shade visual field switching mechanism, causes high expensive, while in order to expand field range, thang-kng scope must be increased, so reflects
Mirror also inevitably increases, and the thickness of base is also inevitable higher, and sample placed side is also raised therewith, that is, the big visual field and thin
Base can not get both.
In patent CN101055346A, a kind of stereomicroscope side-irradiation type lighting method and its dark field body are described
Stereomicroscope.This method is that the light beam for being sent light source is observed sample from the side-irradiation of stereomicroscope objective table, and
The light beam should meet following characteristic：One is that the light beam is in same plane spatial dimension with observed sample, and two be the light beam
Angle between the line of symmetry O1O2 of the object lens primary optical axis of stereomicroscope two is 80~100 °.Its designing points is that light source is straight
Sending and receiving go out or change the objective table that observed sample is placed in nyctitropic last light portion horizontal aligument by optical instrument, so that
Make its perpendicular arrangement of line of symmetry O1O2 with the object lens primary optical axis of stereomicroscope two.The stereoscopic means of illumination that the patent is provided is not
Too suitable gas phase sample, and the free switching of light and shade observation can not be realized simultaneously, general context limitation is big.
In patent CN101587236A, a kind of lighting device of dark ground microscope is described.It includes object lens, plummer
And light source module, the light source module include light beam, reflecting member and condensing member.Reflecting member, for will be along inceptive direction
The light advanced is reflected into the ring-shaped light advanced substantially along the inceptive direction, and described is just hollow；And it is poly-
Light component, the ring-shaped light penetrates through the condensing member and focused on the detection test specimen, and penetrates through described poly-
The part ring-shaped light of light component is by the detection test specimen scattering.The scheme that patent is provided is excessively complicated, causes base higher,
Also improve production cost.
The content of the invention
It is an object of the present invention to provide a kind of lighting device for stereomicroscope, can be by being reasonably laid out
The position of light source and the understanding and considerate condition of light for changing light source and sample, can be achieved the multi-functional transilluminations such as bright field illumination, dark-ground illumination.
In addition, can by controlling the working condition of light source, realize sample into image contrast can consecutive variations.
Another object of the present invention is to there is provided a kind of lighting device for stereomicroscope, it is possible to decrease sample is placed
The height in face, you can the height of reduction Microscope base.
Another object of the present invention is to there is provided a kind of lighting device for stereomicroscope, can conveniently, simply switch
Bright field illumination and dark field illumination, can be adapted to the observation of all kinds of samples.It is simple in construction, cost of goods manufactured can be substantially reduced.
Then, the present invention propose a kind of means of illumination for stereomicroscope, be provided with below point of observation by
The sample of observation, observed sample is illuminated by light source.Light source is positioned over below observed sample, and ensures light
Source is imaged beyond the region of light positioned at point of observation；When carrying out dark-ground illumination, the placement one between light source and sample
Individual block piece, the block piece only allows light source pass through positioned at the scattering light that can be imaged part within the region of light；When
When carrying out bright field illumination, one thang-kng part of placement between light source and sample, the thang-kng part makes light source positioned at can imaging
Whole light within the region of line and in addition can pass through.
Then, the present invention proposes a kind of lighting device, including：Light source, switching mechanism, block piece and thang-kng part, the light source
Be positioned over the space below observed sample, and the light source be located at the point of observation above sample be imaged the region of light with
Outside, the switching mechanism is used to make one of them being placed between light source and sample of block piece and thang-kng part；It is dark when carrying out
During the illumination of field, by the switching mechanism one block piece of the placement between light source and sample, the block piece only makes light source in place
It can pass through in the scattering light that can be imaged part within the region of light；When carrying out bright field illumination, pass through the switching mechanism
One thang-kng part of placement between light source and sample, the thang-kng part make light source positioned at can be imaged within the region of light and with
Outer whole light can pass through.
Then, the present invention proposes a kind of stereomicroscope, including：Eyepiece, zoom body group, focus adjusting mechanism, platen and illumination
It is used to place observed sample on device, platen.Wherein, the platen is transparent platen, and the lighting device is arranged on the platen
Under, the lighting device is the lighting device of the first as described above.
The present invention can realize bright illumination in dark field by above-mentioned means of illumination and device, and during bright field
Uniform Illumination can be realized again.Bright field and dark field can be easily achieved the illumination of big field range, you can for micro-
See regional observation, it can also be used to observe macro-regions.Due to there is no other optical elements or optical element to put in lighting device
Outside imaging light, therefore the influence without other veiling glares；Meanwhile, the light path that illuminating ray passes through is also very short, therefore without other
The influence of veiling glare minimum stray light in other words, so as to improve details in a play not acted out on stage, but told through dialogues contrast.When being switched to details in a play not acted out on stage, but told through dialogues from light field, due to having
Astigmatism ring blocks direct light and enters human eye, brightness is comfortably observed shape also in human eye while Uniform Illumination is realized
State, so as to prevent damage of the light to human eye.
Brief description of the drawings
Fig. 1 is the side view of the stereomicroscope of applicable lighting device of the invention；
Fig. 2 is the plurality of LEDs lighting layout schematic diagram of the present invention；
Fig. 3 is the figure of the first embodiment of the microscopical lighting device of the present invention, is the structure based on bright field
Represent figure；
Fig. 4 is the figure of the first embodiment of the microscopical lighting device of the present invention, the representation based on dark field
Figure；
Fig. 5 is the switching mechanism embodiment expression figure of the microscopical lighting device of the present invention；
Fig. 6 is the figure of the first embodiment variation of the microscopical lighting device of the present invention, is based on bright field
Structural table diagram；
Fig. 7 is the figure of the first embodiment variation of the microscopical lighting device of the present invention, the knot based on dark field
Structure represents figure；
Fig. 8 a are the light sources of the microscopical lighting device of the present invention with the structural representation of cylindrical arrangement；
Fig. 8 b are Fig. 8 a sectional views；
Fig. 9 a are the structural representations arranged with the first free form surface shape of light source of the microscopical lighting device of the present invention
Figure；
Fig. 9 b are Fig. 9 a sectional views；
Figure 10 a are the structural representations arranged with second of free form surface shape of light source of the microscopical lighting device of the present invention
Figure；
Figure 10 b are Figure 10 a sectional views.
Embodiment
First, the present invention proposes a kind of means of illumination for stereomicroscope, (is usually eyepiece, becomes in point of observation
The optical viewing system of the compositions such as times body group, focus adjusting mechanism, not limited to this) below be provided with observed sample, be observed
Sample be illuminated by light source.Light source is positioned over below observed sample, and ensure that light source is located at point of observation can
Beyond the region for being imaged light.When carrying out dark-ground illumination, one block piece of placement between light source and sample, the block piece
Light source is only set to pass through positioned at the scattering light that can be imaged part within the region of light；When carrying out bright field illumination,
One thang-kng part of placement between light source and sample, the thang-kng part makes light source positioned at can be imaged within the region of light and in addition
Whole light can pass through.It is preferred that, when carrying out bright field illumination, one light of placement between light source and sample improves
Part, the light, which improves part, makes light by outgoing after uniform spread；So as to allow bright field illumination to obtain the effect of more Uniform Illumination
Really.The present invention's is with the difference of the existing means of illumination maximum for stereomicroscope, by light source be positioned over by
Below the sample of observation, and ensure light source being imaged beyond the region of light positioned at point of observation, recycle block piece or thang-kng
Part goes out optical range (i.e. the understanding and considerate condition of light of light source and sample) to change light source towards point of observation, bright so as to be easily achieved
Visual field and dark field all obtain the bright illumination of big field range.
Secondly, according to above-mentioned means of illumination, the present invention also proposes a kind of lighting device, and the body with the lighting device
Stereomicroscope.
In conjunction with the drawings and specific embodiments to the present invention the stereomicroscope with the lighting device furtherly
It is bright.
As shown in fig.1, being the side view for the stereomicroscope for being applicable the lighting device of the present invention.The embodiment it is stereoscopic
Microscope includes：Eyepiece 10, zoom body group 11, focus adjusting mechanism 12, transparent platen 30 and lighting device.Wherein, eyepiece 10, zoom
Body group 11, focus adjusting mechanism 12 are as good as with general microscope, can be realized using all prior arts.Put on the transparent platen 30
Sample 13 is equipped with, the lighting device of the embodiment includes transmission illumination part 14 and switching mechanism 15.The embodiment passes through focusing
The position of focal plane of the adjustment zoom body group of mechanism 12 11, can be observed the sample 13 being positioned on transparent platen 30 from eyepiece 10,
Bright field illumination and dark-ground illumination are carried out by the changeable transmission illumination part 14 of switching mechanism 15, selected with simple, quick way
Select the illumination of suitable sample 13.
Fig. 2 is lighting layout's schematic diagram of the light source of the present invention, the light source of the embodiment be with many light emitting diodes (with
Lower abbreviation LED) exemplified by illustrate, can also be substituted using the light source of other smaller size smallers in practical application, without as
Limit.The schematic diagram includes that the object lens 20 (i.e. point of observation), sample 13, transparent platen (such as glass material flat board) of imaging can be obtained
30th, for installing the base 31 (base 31 is for offering the diaphragm of a thang-kng under transparent platen 30), many of transparent platen 30
LEDs light source 36 (or 50), can be imaged light 21.Plurality of LEDs layout should in place sample 13 transparent platen 30 it
Under, while (that is, the alleged region for being imaged light is that AB covers model in figure positioned at that can be imaged the extended line of light 21
Enclose) outside spatially.Thus lighting layout's schematic diagram of light source is visible, and plurality of LEDs light source 36 (or 50) is used as its light of light source
Line is directly direct projection can not to pass through (diaphragm of base 31).
Refering to shown in Fig. 3 to Fig. 7, lighting device of the invention, including：Light source (such as LED/light source 36 or 50), switching machine
Structure, block piece 40 and thang-kng part 41, the light source (LED/light source 36 or 50) are positioned over space of the observed sample below 13, and
The light source (LED/light source 36 or 50) is imaged beyond the region of light positioned at point of observation (object lens 20) of the top of sample 13, should
Switching mechanism is used to make one of them being placed between light source and sample of block piece 40 and thang-kng part 41.When progress details in a play not acted out on stage, but told through dialogues
During illumination (Fig. 4, Fig. 7), by placement of the switching mechanism between light source (LED/light source 36 or 50) and sample 13, one blocks
Part 40, the block piece 40 only makes light source (LED/light source 36 or 50) (be that AB covers model in figure positioned at that can be imaged the region of light
Enclose) within the scattering light of part can pass through.When carrying out bright field illumination, by the switching mechanism in light source (LED/light source 36
Or 50) one thang-kng part 41 of the placement between sample 13, the thang-kng part 41 makes light source (LED/light source 36 or 50) positioned at can be into
As light region (being AB scopes in figure) within and whole light in addition can pass through.
Wherein, the switching mechanism includes a switching substrate (swivel plate 37) and switching executive item (pin 71, a rotation
70) set, is respectively mounted the setting block piece 40 and the thang-kng part 41 on the switching substrate, the switching executive item is used to drive this to cut
Change substrate and carry out evolution, by evolution so that block piece 40 and the thang-kng part 41 on switching substrate one of them
Being placed between light source (LED/light source 36 or 50) and sample 13.
Refering to Fig. 3, Fig. 4 and Fig. 5, the first embodiment of the present invention is illustrated below.
Fig. 3 is the figure of the first embodiment of the microscopical lighting device of the present invention.The figure is the photograph of structure shown in Fig. 1
Bright device carries out the part sectioned view of bright field illumination state.The lighting device of the embodiment is used in the part of bright field illumination state
Include：Bottom plate 34, circuit board trim ring 35, LED/light source 36, swivel plate 37 and thang-kng part 41.Observed sample 13 place with
On the transparent platen 30 of glass, transparent platen 30 is arranged in microscopical base 31, while base 31 is under transparent platen 30
Offer the diaphragm 311 of a thang-kng.
The LED/light source 36 is installed on the bottom sheet 34 by circuit board trim ring 35, so that LED/light source 36 reliably is fixed on into mark
This less than 13.Wherein preferred, the LED/light source 36 is to include many light emitting diodes, and circular row lopping (referring to Fig. 4).Need
To be stressed, the LED/light source 36 that the circular row is set is to be located at that can be imaged the region of light (be that AB covers model in figure
Enclose) beyond.
In the embodiment, many light emitting diodes of the LED/light source 36 can be white light LEDs, or can be
Monochromatic light LED, or can be white light LEDs and monochromatic light LED array combination.In actual use according to lighting demand, choosing
The LED for selecting different colours is used as light source, to realize that different colour temperatures are illuminated, or regulatable change colour temperature illumination.Together
When, in the control mode of light source, many light emitting diodes for the LED/light source 36 are to carry out overall control simultaneously, or
Person is individually controlled each of many light emitting diodes.These controls can include brightness value control, number of lights
Amount control etc..So as to, allow the LED/light source 36 realize sample into image contrast can consecutive variations.Carried out for LED/light source 36
The light source circuit for regulating and controlling of control can use the LED circuit for regulating and controlling of prior art, no longer be described in detail in this.Meanwhile, in order to can
To be easily controlled to the LED/light source 36, one can also be set on the reasonable position of the stereomicroscope of the embodiment
The adjusting means (knob, button, Trackpad etc.) of individual light modulation.
Thang-kng part 41 in the embodiment is a through-hole structure, and its through hole interior diameter, which is more than LED/light source 36, to be imaged
The diameter of the border circle (AB scopes circle in Fig. 2) in the region of light, so that LED/light source 36 is positioned at can be imaged light
Region within and whole light in addition can pass through.
It is preferred that, more uniformly illuminated to realize, the lighting device of the embodiment, which also includes light, improves part, and the light changes
Kind part is coaxially disposed on the thang-kng part 41, and the light, which improves part, makes light by outgoing after uniform spread.It can expand that light, which improves part,
Fall apart, one or more of dioptric lens, reflector are applied in combination, or use other even optical elements., should in the implementation
Light, which improves part, includes a diffuser plate 32 and reflector 33, and reflector 33 is directly formed in the hole of the through hole of the thang-kng part 41
Wall, is in a back taper wall (wet look).Diffuser plate 32 is above, on swivel plate 37, and swivel plate 37 is installed
On base 31.
When the lighting device of the embodiment carries out bright field illumination, LED/light source 36 emits beam, light directive thang-kng part 41,
And further assemble the light from all directions using the reflector 33 on thang-kng part 4 so that the light that LED/light source 36 is sent
Line is made full use of, and improves the brightness of illumination, and the light reflected by reflector 33 is radiated on diffuser plate 32, by diffuser plate 32
Diffusing reflection or diffraction cause light source uniform irradiation to sample 13.
Fig. 4 is the figure of the first embodiment of the microscopical lighting device of the present invention.The figure is the photograph of structure shown in Fig. 1
Bright device carries out the part sectioned view of dark-ground illumination state.The lighting device of the embodiment is used in the part of dark-ground illumination state
Include：Bottom plate 34, circuit board trim ring 35, LED/light source 36, swivel plate 37 and block piece 40.Lighting device is used to shine in details in a play not acted out on stage, but told through dialogues
It with above-mentioned bright field illumination state is identical that most of device of bright state and position relationship, which are, and difference is：It is arranged on
Block piece 40 on swivel plate 37 is a tubular structure, and its cylinder interior diameter, which is less than LED/light source 36, can be imaged the area of light
The diameter of the border circle (AB scopes circle in Fig. 2) in domain, the hollow bulb 401 of cylinder is used to making LED/light source 36 positioned at can
Being imaged the scattering light of part within the region of light can pass through, and barrel portion 402 is used to making LED/light source 36 positioned at can be imaged
The region of light is blocked with the light of outer portion.So, emitted beam from LED/light source 36, LED/light source 36 is positioned at can be imaged
The scattering light of part can only be radiated on sample 13 at an angle within the region of light, and unnecessary direct projection light is hidden
Block piece 40 is blocked, and prevents from that from LED/light source 36 human eye can be directly entered, so as to realize dark-ground illumination.
Remark additionally again, in the lighting device of embodiment, many light emitting diodes of LED/light source 36 surround
Arrangement is, in a cone arrangement, can also so to utilize and suitably converge light, to improve light efficiency.
For realize by the block piece 40 of the embodiment and thang-kng part 41 one of them LED/light source 36 and sample 13 it
Between the switching mechanism being placed can have a variety of implementations, can be rotary switching mechanism or push-and-pull switching mechanism
Mode or other switching mechanism modes etc..
5 said below in conjunction with the accompanying drawings with the concrete structure of a rotary switching mechanism come the switching mechanism to the embodiment
It is bright.
The rotary switching mechanism of the embodiment includes：Improve part and thang-kng for installing the light such as diffuser plate 32, reflector 33
The swivel plate 37 (be used as switching substrate) of part 41 and block piece 40, and pin 71, rotary sleeve 70 etc. are used as switching executive item.Such as
It is described above, open up two mounting holes on the swivel plate 37 as switching substrate, and be respectively mounted the setting block piece 40
With installation thang-kng part 41 (there is reflector 33), the diffuser plate 32.The swivel plate 37 also extends with one section of body of rod 371 simultaneously,
A pivoted hole is opened up on the body of rod 371, and is articulated in by pin 71 on base 31, the end of the body of rod 371 sets rotary sleeve 70；
Swivel plate 37 can be made to be centered around pin 71 rotate by the position for stirring rotation rotary sleeve 70, so that by blocking on swivel plate 37
Part 40 and thang-kng part 41 are transferred to or produced the illumination path between light source and sample, to realize bright, dark-ground illumination switching.This
Sample, you can realize and switch executive item to drive the switching substrate to carry out the rotation transformation of position by the rotary switching mechanism, lead to
Rotation transformation is crossed so that one of them being placed between light source and sample of the block piece and thang-kng part on switching substrate.
In addition, the switching mechanism of the lighting device of the embodiment can also be substituted using push-and-pull switching mechanism, pass through switching
Executive item converts come the push-and-pull for driving the switching substrate to carry out position, is converted by push-and-pull so that switching the block piece on substrate
With one of them being placed between light source and sample of thang-kng part.The concrete structure people in the art of push-and-pull switching mechanism
Member can be designed realization refering to prior art, no longer be described in detail in this.
Bright field and dark field system can be cut by switching mechanism for the lighting device of first embodiment above
Change, meet requirement of the different specimens to illumination.It can be can be achieved by adjusting the distance of LED/light source 36 and base 31 to difference
The requirement of visual field size.And it is spuious without other when dark-ground illumination due to no others Additional optical parts in imaging optical path
Shadow rings, and sample 13 can be become clear and is equably illuminated, so as to improve the contrast of details in a play not acted out on stage, but told through dialogues.
Below, reference picture 6, Fig. 7 illustrate the variation of above-mentioned first embodiment.In addition, in the variation, using
The structure of above-mentioned first embodiment same section, the description thereof will be omitted.
As illustrated, change LED/light source 36 into LED/light source 50 in the deformation form, remaining structure and first embodiment phase
Together, the circular arrangement of many light emitting diodes of the LED/light source 50 is in the same plane.Utilize the deformation form, LED light
Space needed for source 50 is low than LED/light source 36, can preferably reduce the height of sample 13, although utilization ratio of optical energy can phase
The reduction answered.
In addition, many illuminators (such as light emitting diode) on the light source of the lighting device are except two kinds of above-mentioned arrangement sides
Outside formula, can also be and be designed to cylindrical arrangement as shown in Fig. 8 a, 8b as needed, or as Fig. 9 a, 9b and Figure 10 a,
Shown in 10b is in free form surface shape arrangement etc..Using as Fig. 8 a, 8b Fig. 9 a, 9b light source shown in Figure 10 a, 10b arrange knot
Structure, its effect and above-mentioned light source arrangement are substantially similar, but the light source arrangement taken different shapes is mainly reality
Existing light field, the luminance balance of details in a play not acted out on stage, but told through dialogues.For the light source arrangement shown in Fig. 9 a, 9b and Figure 10 a, 10b, moreover it is possible to maximum possible
Using light energy, and make observation sample as consistent as possible in the illumination of 360 degree of all directions.
To sum up, according to lighting device as described above and stereomicroscope, the present invention can have the advantage that：
(1), change for bright, dark-ground illumination, can simply and easily switch very much.
(2), because other no optical elements or optical element are arranged on and can be imaged outside light, in dark field, do not have
The influence of scattered light, so as to improve the contrast of details in a play not acted out on stage, but told through dialogues.
(3), no matter when bright field illumination or details in a play not acted out on stage, but told through dialogues illuminate, it is only necessary to change the distance of thang-kng source and base, you can
Realize the field illumination of different range, also with regard to when say and be easily achieved the illumination of big field range.
(4), switching mechanism and light source only need to the space of very little it is achieved that the height of base can be made relatively thin, drop
The height in low sample face.
(5), in dark field illumination, increase block piece can not only block unnecessary light and enter human eye, prevent human eye
Damage, can allow illuminating ray uniform and become clear again.
(6) light path that, illuminating ray passes through is also very short, therefore veiling glare is minimum in other words for the influence without other veiling glares
Change, so as to improve details in a play not acted out on stage, but told through dialogues contrast.
(7), the light and shade lighting device, simple in construction, can effectively reduce cost.
Although specifically showing and describing the present invention with reference to preferred embodiment, those skilled in the art should be bright
In vain, do not departing from the spirit and scope of the present invention that appended claims are limited, in the form and details can be right
The present invention makes a variety of changes, and is protection scope of the present invention.
Claims (13)
1. a kind of lighting device, it is characterised in that including：Light source, switching mechanism, block piece and thang-kng part, the light source are positioned over
Space below observed sample, and the point of observation that the light source is located above sample is imaged beyond the region of light, should
Switching mechanism is used to make one of them of block piece and thang-kng part be placed between light source and sample；When progress dark-ground illumination
When, by the switching mechanism one block piece of the placement between light source and sample, the block piece only makes light source positioned at can be into
As light region within the scattering light of part can pass through；When carrying out bright field illumination, by the switching mechanism in light source
One thang-kng part of placement between sample, the thang-kng part makes light source positioned at can be imaged within the region of light and in addition complete
Portion's light can pass through.
2. lighting device according to claim 1, it is characterised in that：The lighting device, which also includes light, improves part, and the light changes
Kind part is coaxially disposed on the thang-kng part, and the light, which improves part, makes light by outgoing after uniform spread.
3. lighting device according to claim 1 or 2, it is characterised in that：The switching mechanism include switching substrate and
The setting block piece and the thang-kng part are respectively mounted on one switching executive item, the switching substrate, the switching executive item is used for band
Move the switching substrate and carry out evolution, by evolution so that switching wherein the one of the block piece on substrate and thang-kng part
It is individual to be placed between light source and sample.
4. lighting device according to claim 3, it is characterised in that：The switching mechanism is rotary switching mechanism, by cutting
Change executive item to drive the switching substrate to carry out the rotation transformation of position, by rotation transformation so that blocking on switching substrate
One of them of part and thang-kng part are placed between light source and sample.
5. lighting device according to claim 3, it is characterised in that：The switching mechanism is push-and-pull switching mechanism, by cutting
Change executive item to drive the switching substrate to carry out the push-and-pull conversion of position, converted by push-and-pull so that switching blocking on substrate
One of them of part and thang-kng part are placed between light source and sample.
6. lighting device according to claim 1 or 2, it is characterised in that：The block piece is a tubular structure, its cylinder
Interior diameter is less than the diameter that light source is enclosed on the border that can be imaged the region of light, and the hollow bulb of cylinder is used to making light source positioned at can
Being imaged the scattering light of part within the region of light can pass through, and barrel portion is used to making light source positioned at can be imaged the area of light
Domain is blocked with the light of outer portion.
7. lighting device according to claim 1 or 2, it is characterised in that：The thang-kng part is a through-hole structure, its through hole
Interior diameter is more than the diameter that light source is enclosed on the border that can be imaged the region of light, so that light source is positioned at can be imaged the area of light
Whole light within domain and in addition can pass through.
8. lighting device according to claim 2, it is characterised in that：The light improve part be diffuser plate, it is dioptric lens, reflective
One or more of bowl is applied in combination.
9. lighting device according to claim 1 or 2, it is characterised in that：The light source includes many light emitting diodes.
10. lighting device according to claim 9, it is characterised in that：Many light emitting diodes of the light source are white lights
LED, either many light emitting diodes of the light source are that many light emitting diodes of monochromatic light LED or the light source are white lights
LED and monochromatic light LED array combination.
11. lighting device according to claim 9, it is characterised in that：For the light source many light emitting diodes be into
The overall control simultaneously of row, or individually controlled for each of many light emitting diodes of the light source.
12. lighting device according to claim 9, it is characterised in that：Many light emitting diodes are arranged on same plane
On, or in cone arrangement, or into cylindrical arrangement, or in free form surface shape arrangement.
13. a kind of stereomicroscope, including：It is used to put on eyepiece, zoom body group, focus adjusting mechanism, platen and lighting device, platen
Observed sample is put, its spy is：The platen is transparent platen, and the lighting device is arranged under the platen, the lighting device
It is the lighting device as described in any in above-mentioned claim 1-12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510124174.3A CN104698581B (en) | 2015-03-20 | 2015-03-20 | Lighting device and stereomicroscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510124174.3A CN104698581B (en) | 2015-03-20 | 2015-03-20 | Lighting device and stereomicroscope |
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| CN104698581A CN104698581A (en) | 2015-06-10 |
| CN104698581B true CN104698581B (en) | 2017-09-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158889B (en) * | 2015-09-29 | 2018-01-02 | 南京理工大学 | Stereoscopic microscopic imaging device and its method based on LED array illumination |
| CN105549193B (en) * | 2016-03-08 | 2018-02-02 | 麦克奥迪实业集团有限公司 | A kind of stereomicroscope system with 360 degrees omnidirection observation |
| CN105842835B (en) * | 2016-06-03 | 2020-02-07 | 安徽师范大学 | Microscope design scheme with built-in light guide optical fiber |
| CN106772978A (en) * | 2016-12-30 | 2017-05-31 | 宁波永新光学股份有限公司 | A kind of illuminated light microscope of LED reflection |
| CN106772987A (en) * | 2017-01-13 | 2017-05-31 | 宁波舜宇仪器有限公司 | Micro- scanner and its micro- scan method |
| US20220163782A1 (en) * | 2020-03-27 | 2022-05-26 | Convergence Technology Co.Ltd. | Dark field illuminator for microscopic imaging |
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| CN104698581A (en) | 2015-06-10 |
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