CN201359560Y - Parfocalization inspection instrument - Google Patents
Parfocalization inspection instrument Download PDFInfo
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- CN201359560Y CN201359560Y CNU2009200367301U CN200920036730U CN201359560Y CN 201359560 Y CN201359560 Y CN 201359560Y CN U2009200367301 U CNU2009200367301 U CN U2009200367301U CN 200920036730 U CN200920036730 U CN 200920036730U CN 201359560 Y CN201359560 Y CN 201359560Y
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Abstract
The utility model aims to provide a parfocalization inspection instrument which can enhance the parfocalization inspection precision. The parfocalization inspection device comprises a parallel light source arranged on a machine frame, an objective image as well as a semi-permeable semi-reflection prism and a reflecting mirror which can axially move along the objective lens to be inspected; the parallel light source and the objective image are arranged at the extremely far place at the front end of the axial line of the objective lens to be inspected, the semi-permeable semi-reflection prism and the reflecting mirror are arranged at the front end and the rear end of the axial line of the objective lens to be inspected, and an eye lens is arranged on the side of the semi-permeable semi-reflection prism; the objective image exposed in the parallel light source is transmitted through the semi-permeable semi-reflection prism and forms an image on the focal plane of the objective lens through the objective lens to be inspected; the formed image caught by the reflecting mirror is reflected as the reflecting objective image into the objective lens to be inspected, is reflected into the eye lens by the semi-permeable semi-reflection prism after passing through the objective lens to be inspected to enable the reflecting object to form before eyes.
Description
Technical field
The utility model relates to a kind of microscopical parfocalization testing fixture.
Background technology
Microscopical objective lens arrangement complexity is made precision, owing to the correction to aberration, is combined by lens combination separated by a distance and that be fixed in the objective tube of metal.Object lens have many concrete requirements, and parfocalization is wherein important inspection item.Parfocalization is when microscopy, and after clear with the object lens view image of a certain multiplying power, when the object lens of another multiplying power of conversion, its imaging also should be clear substantially.The quality of parfocalization performance is an important symbol of microscope quality.
The principle of original parfocalization somascope such as Fig. 6, light source 1 focuses on the cross-graduation plate 3 of objective table by condenser 2, and at this moment, the cross-graduation plate enters eyepiece 5 as image after object lens 4 imagings, image in human eye.Regulate the thick/spiral 6 of carefully focusing, at first, object lens pairing reading numerical value of scale mark (benchmark numerical value) on the thick/spiral of carefully focusing when the parfocalization position settles the standard.Then, observe the cross-graduation plate from eyepiece, screw in position, same hole successively again (4X, 10X, 20X, 60X, 100X) object lens transfer to the most clear state respectively, and read the pairing reading numerical value of scale mark on the thick/spiral of carefully focusing respectively; This reading numerical value and benchmark numerical value poor is the error precision of parfocalization.
This kind transmission-type light channel structure is conventional light channel structure and check system, is the model that existing light channel structure is checked parfocalization.This kind inspection method, because the error of human eye, the parfocalization precision is not high especially.
The utility model content
The purpose of this utility model provides a kind of parfocalization testing fixture that can improve parfocalization inspection precision.
This parfocalization somascope comprises the parallel light source and the image that are arranged on the frame, it also comprise semi-transparent semi-reflecting prism, can be along the axially movable catoptron of tested object lens; At tested object lens axis front end unlimited distance parallel light source and image are set, semi-transparent semi-reflecting prism and catoptron are set respectively, eyepiece is set at the sidepiece of semi-transparent semi-reflecting prism in tested object lens axis front and back end; The image that parallel light source is got passes through the imaging on its focal plane of tested object lens again by semi-transparent semi-reflecting prism transmission; The imaging that catoptron is caught looks like to be reflected into tested object lens as reverberation, after semi-transparent semi-reflecting prism vergence enters eyepiece, makes reverberation look like to image in human eye by tested object lens.
This parfocalization somascope is to utilize image that directional light gets by semi-transparent semi-reflecting prism transmission, pass through the imaging on its focal plane of tested object lens again, utilization can look like to be reflected into tested object lens as reverberation along the imaging that the axially movable catoptron of tested object lens is caught, by tested object lens after semi-transparent semi-reflecting prism vergence, enter eyepiece, make reverberation look like to image in human eye; In the axial shift position of tested object lens, make that the imaging of reverberation picture is clear by the accommodation reflex mirror; According to the distance of catoptron, judge the parfocalization degree of tested object lens with respect to standard parfocalization position.This parfocalization somascope is the reflective light path of utilizing, and specifically, it is image (as the cross curve of cross differentiation plate) semi-transparent semi-reflecting prism transmission of process and the tested object lens that utilize directional light (light source) to get, imaging on the focal plane of tested object lens; Utilize catoptron, catch imaging, become the image on the focus of tested object lens of reflected light path,,,, image in human eye through eyepiece by semi-transparent semi-reflecting prism vergence then by tested object lens.Utilize the parfocalization performance of these reflective light path check object lens, the parfocalization precision can be doubled.
For accurately the reflection catoptron is with respect to the shift position of each tested object lens, it also comprises slide rail and the stadimeter (as clock gauge) that is provided with on the frame; Catoptron and slide rail axially become to be slidingly connected being parallel to tested object lens; Stadimeter is connected with catoptron, with the displacement of reflection catoptron with respect to slide rail.
Change each tested object lens for convenience, it also comprises the objective holder that is provided with on the frame; Tested object lens become to removably connect with objective holder.
In order to prevent to produce aberration, observe the influence that is subjected to aberration.Described light source is the monochromatic light light source, centre wavelength D line.
In order clearly to see imaging, described image is the cross curve of details in a play not acted out on stage, but told through dialogues cross differentiation plate.Be preferably between parallel light source and the cross differentiation plate field lens is set.Because field lens can play the effect of an outer light beam to the optical axis deviation that make, therefore can effectively light be drawn in, the bore of outgoing beam is reduced, thereby can reduce requirement to follow-up lens clear aperature, and field lens can better enter optical system with the light of cross-graduation panel edges part.
Description of drawings
Fig. 1 is the synoptic diagram of parfocalization somascope of the present utility model.
Fig. 2 is the synoptic diagram of the objective holder among Fig. 1.
Fig. 3 is that the object lens among Fig. 1 connect the slide block synoptic diagram.
Fig. 4 is the light path system synoptic diagram among Fig. 1.
Fig. 5 is the light path synoptic diagram of reflection planes mirror reflection surface, focal plane of lens, actual relativeness as the plane.
Fig. 6 is the synoptic diagram of original parfocalization somascope.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Parfocalization somascope shown in Figure 1, objective holder 1 is provided with on the frame 2.The top of objective holder 1 has dovetail groove (referring to Fig. 2).Be provided with object lens in the dovetail groove and connect slide block 3 (referring to Fig. 3).The center that object lens connect slide block 3 has threaded hole 31, to be connected with tested object lens 4.The outside that object lens connect slide block 3 is and the corresponding dovetail slide rail 32 of dovetail groove.Dovetail groove on the objective holder be axially perpendicular to tested object lens 4 axially.Dovetail groove connects slide block 3 at the object lens that axially can insert different big or small threaded holes as requested perpendicular to tested object lens, to change the object lens of different size.Such as: if tested object lens thread profile gauge lattice are: M27 * 0.75; The object lens that then can insert M27 * 0.75 specification connect slide block.
Tested object lens axially above plane mirror 5 is set.The back side of plane mirror 5 contacts with the table bar of clock gauge 6 on being arranged on frame.The table bar of clock gauge 6 is on the axial direction of tested object lens.Slide rail (not shown) on plane mirror and the frame axially becomes to be slidingly connected being parallel to tested object lens, and clock gauge 6 can reflect the displacement of catoptron with respect to slide rail.
There is semi-transparent semi-reflecting prism 7 inside of objective holder 1, at the sidepiece of semi-transparent semi-reflecting prism triangular prism 8 and eyepiece 9 is set.In the bottom of semi-transparent semi-reflecting prism reflecting prism 10 is set, the sidepiece of reflecting prism 10 sets gradually details in a play not acted out on stage, but told through dialogues cross differentiation plate 11, field lens 12, condenser 13, mono-chromatic lamp source 14.Its light path system is referring to Fig. 4,
Mono-chromatic lamp source 14 is through condensers 13, form directional light through 12 dozens of field lenses on details in a play not acted out on stage, but told through dialogues cross differentiation plate 11, form the cross imaging.Before details in a play not acted out on stage, but told through dialogues cross differentiation plate, directly stick field lens, thereby make chief ray parallel, and reduce parasitic light.The picture of cross-graduation plate by the transmission of semi-transparent semi-reflecting prism 7, through detected object lens, focuses on the tested focal plane of lens through prism 10 vertically upward.If plane mirror is on tested focal plane of lens, light returns along former road, redirect to triangular prism 8 by semi-transparent semi-reflecting prism 7, enters eyepiece 9; Eye-observation.
Concrete parfocalization is checked step:
At first,, perhaps use the standard object lens with the method for slip gauge, the plane of motion catoptron, fix standard focal length apart from the time the position (standard parfocalization position) of plane mirror, as anchor point.
Second step: with clock gauge zero setting.
The 3rd step: extract object lens out and connect slide block, screw on tested object lens, again the embolus microscope base.
The 4th step: regulate the position of plane mirror, the picture of observing is adjusted to knows state most, read the clock gauge reading, this reading is and checks the parfocalization error precision of coming out.
Repeat above method, can measure different size, the parfocalization trueness error of different object lens.
Specify below why this parfocalization precision can double.
Referring to shown in Figure 5, suppose that plane mirror reflecting surface 16 is standard parfocalization position now; Focal plane of lens 15 is actual object lens image space.On light path,, observe and got up to equal out of focus 2h (from focal plane of lens 15 to reality as the distance on plane 17) though focal plane of lens only is h to the distance of standard parfocalization position.Fuzzyyer than one times of out of focus.So it is highly sensitive, imaging is good, and the parfocalization precision can double.
Claims (6)
1. the parfocalization somascope comprises the parallel light source and the image that are arranged on the frame, it is characterized in that: further comprising semi-transparent semi-reflecting prism, can be along the axially movable catoptron of tested object lens; At tested object lens axis front end unlimited distance parallel light source and image are set, semi-transparent semi-reflecting prism and catoptron are set respectively, eyepiece is set at the sidepiece of semi-transparent semi-reflecting prism in tested object lens axis front and back end; The image that parallel light source is got passes through the imaging on its focal plane of tested object lens again by semi-transparent semi-reflecting prism transmission; The imaging that utilizes catoptron to catch looks like to be reflected into tested object lens as reverberation, after semi-transparent semi-reflecting prism vergence enters eyepiece, makes reverberation look like to image in human eye by tested object lens.
2. parfocalization somascope according to claim 1 it is characterized in that: further comprising the slide rail and the stadimeter that are provided with on the frame; Catoptron and slide rail axially become to be slidingly connected being parallel to tested object lens; Stadimeter is connected with catoptron, with the displacement of reflection catoptron with respect to slide rail.
3. parfocalization somascope according to claim 1 it is characterized in that: further comprising the objective holder that is provided with on the frame; Tested object lens become to removably connect with objective holder.
4. parfocalization somascope according to claim 1 is characterized in that: described light source is the monochromatic light light source.
5. parfocalization somascope according to claim 1 is characterized in that: described image is the cross curve of details in a play not acted out on stage, but told through dialogues cross differentiation plate.
6. parfocalization somascope according to claim 5 is characterized in that: between parallel light source and cross differentiation plate field lens is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367301U CN201359560Y (en) | 2009-02-24 | 2009-02-24 | Parfocalization inspection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200367301U CN201359560Y (en) | 2009-02-24 | 2009-02-24 | Parfocalization inspection instrument |
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| Publication Number | Publication Date |
|---|---|
| CN201359560Y true CN201359560Y (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200367301U Expired - Lifetime CN201359560Y (en) | 2009-02-24 | 2009-02-24 | Parfocalization inspection instrument |
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| CN (1) | CN201359560Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092521B (en) * | 2016-08-11 | 2019-04-12 | 麦克奥迪实业集团有限公司 | A kind of high-precision object lens parfocalization detection device and detection method |
| CN114690390A (en) * | 2022-04-12 | 2022-07-01 | 上海轶德医疗科技股份有限公司 | Zoom parfocalization debugging method |
-
2009
- 2009-02-24 CN CNU2009200367301U patent/CN201359560Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092521B (en) * | 2016-08-11 | 2019-04-12 | 麦克奥迪实业集团有限公司 | A kind of high-precision object lens parfocalization detection device and detection method |
| CN114690390A (en) * | 2022-04-12 | 2022-07-01 | 上海轶德医疗科技股份有限公司 | Zoom parfocalization debugging method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |
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| CX01 | Expiry of patent term |