CN100422842C - Auxilary focusing method - Google Patents
Auxilary focusing method Download PDFInfo
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- CN100422842C CN100422842C CNB2005100555311A CN200510055531A CN100422842C CN 100422842 C CN100422842 C CN 100422842C CN B2005100555311 A CNB2005100555311 A CN B2005100555311A CN 200510055531 A CN200510055531 A CN 200510055531A CN 100422842 C CN100422842 C CN 100422842C
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Abstract
The present invention provides an auxiliary focusing method which is suitable for a telescopic image pick-up device and comprises the following steps: the image pick-up device is aligned with a target object to enable the image of the target object is imaged on an image pick-up element; the image of the target object imaged on the image pick-up element is magnified and displayed on a display element by a specific magnification; an object lens group of the telescopic image pick-up device is adjusted to obtained the best magnified image of the target object on the display element; the image of the target object displayed on the display element is restored to the original size. The auxiliary focusing method of the present invention can overcome the defect that a user can not easily judge whether the image on the image pick-up element or the display element is correctly focused or not when the telescopic image pick-up device focuses a distant target object, and thus, the focusing accuracy of the telescopic pick-up device to the distant target object is improved.
Description
Technical field
The invention relates to a kind of auxiliary focusing method, particularly relevant for a kind of auxiliary focusing method of the camera head of looking in the distance.
Background technology
Generally speaking, present digital camera has the function of optical zoom and Digital Zoom mostly simultaneously.As shown in Figure 1, a known digital camera 1 can roughly include an object lens group 11, an eyepiece group 12 and a CCD 13, and object lens group 11 is the front ends that are arranged at digital camera 1, and eyepiece group 12 is arranged between object lens group 11 and the CCD 13.When the user desires to absorb the image of an object S1 with digital camera 1, can come the image of object S1 is carried out the optical zoom adjustment with object lens group 11 earlier, that is, object lens group 11 is moved forward and backward according to the direction shown in the arrow A and amplify or dwindle object S1 and image in image on the CCD 13, then promptly be to imaging in the adjustment of focusing of image on the CCD 13, so that CCD 13 can capture image clearly.As for above-mentioned focusing adjustment, generally can in the mode of Digital Zoom the image that images on the CCD 13 be amplified a particular power earlier, and magnified image is shown on the LCD, at this moment, eyepiece group 12 is moved forward and backward according to the direction shown in the arrow B can adjust object S 1 and image in focal length on the CCD 13, and then can make the sharpness of the magnified image that is shown in the object S1 on the LCD be adjusted.At last, make the size before the image that images on the LCD is returned to Digital Zoom again, and press the shutter (not shown) of digital camera 1, can photograph the image of object S1 clearly.Yet look in the distance camera head when one distant place object is focused in use, the user often is difficult for judging whether the image on imaging apparatus (CCD) or display element (LCD screen) focuses correctly.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of auxiliary focusing method, with the raising accuracy of camera head of looking in the distance to distant place object focusing.
To achieve these goals, the invention provides a kind of auxiliary focusing method, it is applicable to the camera head of looking in the distance, wherein this camera head of looking in the distance comprises object lens, an Amici prism, an eyepiece, an imaging apparatus and a display element, this method comprises the following steps: this camera head of looking in the distance is aimed at an object, so that the video imaging of this object is on this imaging apparatus; The image that images in this object on this imaging apparatus is amplified with a particular power, and be shown on this display element; Adjust the position of these object lens, make the image of this shown object of this display element obtain best sharpness with respect to this Amici prism; And the magnified image that will be shown in this object on this display element returns back to original size.
Auxiliary focusing method provided by the invention, the image of this object are that the mode with Digital Zoom is exaggerated.
Auxiliary focusing method provided by the invention also comprises a step: after the shown image of this display element returns back to original size, adjust this eyepiece, obtain sharp image so that the operator to be provided from this eyepiece.
Auxiliary focusing method provided by the invention, be applicable to the camera head of looking in the distance, wherein this camera head of looking in the distance has an object lens group, one Amici prism, one focusing mirror group, one imaging apparatus, an one eyepiece group and a display element, this Amici prism is arranged between these object lens group and this eyepiece group, this focusing mirror group is arranged between this Amici prism and this imaging apparatus, after an object passes through these object lens group imaging, by this Amici prism the image of this object is passed to this focusing mirror group and this eyepiece group respectively, this method shows a magnified image after comprising the following steps: that the image that will image in this object on this imaging apparatus amplifies with a particular power on this display element; Adjust the position of this object lens faciation, make this magnified image of this shown object of this display element obtain best sharpness for this Amici prism; And this magnified image that will be shown in this object on this display element returns back to original size.
Auxiliary focusing method provided by the invention, the image of this object are that the mode with Digital Zoom is exaggerated.
Auxiliary focusing method provided by the invention also comprises a step: after this shown magnified image of this display element returns back to original size, adjust this eyepiece group, obtain sharp image so that the operator to be provided from this eyepiece group.
Auxiliary focusing method provided by the invention, be applicable to the camera head of looking in the distance, wherein this camera head of looking in the distance has an objective tube, one Amici prism, one eyepiece stalk, one imaging apparatus, one display element, one frame body and a screw rod group, one object lens group is arranged among this objective tube, this screw rod group is to be connected in this objective tube, one eyepiece group is arranged among this eyepiece stalk, this eyepiece stalk is to combine with this frame body rotationally, this method comprises the following steps: this camera head of looking in the distance is aimed at an object, so that the video imaging of this object is on this imaging apparatus; The image that images in this object on this imaging apparatus is amplified with a particular power, and be shown on this display element; Utilize this screw rod group to adjust this objective tube, change the position of this object lens faciation, make the image of this shown object of this display element obtain best sharpness for this Amici prism; And the image that will be shown in this object on this display element returns back to original size.
Auxiliary focusing method provided by the invention, the image of this object are that the mode with Digital Zoom is exaggerated.
Auxiliary focusing method provided by the invention, also comprise a step: after the shown image of this display element returns back to original size, rotate this eyepiece stalk, change the position of this eyepiece faciation, obtain sharp image from this eyepiece stalk so that the operator to be provided for this Amici prism.
Auxiliary focusing method of the present invention, it is applicable to the camera head of looking in the distance, wherein, this camera head of looking in the distance has one first object lens group, one Amici prism, one focusing mirror group, one imaging apparatus and a display element, this first object lens group has a primary optic axis, this Amici prism is to be arranged on this primary optic axis, this focusing mirror group is fixed between this Amici prism and this imaging apparatus, this focusing mirror group has one second optical axis, this second optical axis is and this primary optic axis intersection, this Amici prism is a confluce that is positioned at this primary optic axis and this second optical axis, and this focusing mirror group's back focal length is to equal the distance of this focusing mirror group to this imaging apparatus, this auxiliary focusing method comprises the following steps: this camera head of looking in the distance is aimed at an object, so that the image of this object is in regular turn via this first object lens group, this Amici prism and this focusing mirror group and image on this imaging apparatus; The image that images in this object on this imaging apparatus is shown on this display element with particular power amplification; Adjust this first object lens group's position, so that obtain a magnified image of this object clearly on this display element; And this magnified image that will be shown in this object on this display element returns back to original size.
Auxiliary focusing method provided by the invention, the image of this object are to be exaggerated in automatic mode.
Auxiliary focusing method provided by the invention, the image of this object are to be exaggerated in manual mode.
Auxiliary focusing method provided by the invention, focal imaging are behind this imaging apparatus, and this magnified image that is shown in this object on this display element is that the mode with manual control returns back to original size.
Auxiliary focusing method provided by the invention, can improve and look in the distance camera head when a distant place object is focused, the user be difficult for to judge its image correct shortcoming of whether focusing on imaging apparatus (CCD) or display element (LCD screen), therefore can significantly promote the accuracy of camera head to a distant place object focusing of looking in the distance.
Description of drawings
Fig. 1 is the internal structure synoptic diagram of a known digital camera.
Fig. 2 A is a stereographic map of using the camera head of looking in the distance of auxiliary focusing method of the present invention.
Fig. 2 B is an internal structure synoptic diagram of using the camera head of looking in the distance of auxiliary focusing method of the present invention.
Fig. 3 is another internal structure synoptic diagram of using the camera head of looking in the distance of auxiliary focusing method of the present invention.
Fig. 4 is an internal structure operation chart of using the camera head of looking in the distance of auxiliary focusing method of the present invention.
Fig. 5 is another internal structure operation chart of using the camera head of looking in the distance of auxiliary focusing method of the present invention.
Fig. 6 is the operational flowchart of auxiliary focusing method of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly and conjunction with figs. elaborate.
Now conjunction with figs. illustrates preferred embodiment of the present invention.
See also Fig. 2 A, the applied camera head 100 of looking in the distance of the present invention has a display element 105 (a for example LCD), and it can show the image that imaging apparatus absorbed via inside.
See also Fig. 2 B, the inner structure of the camera head 100 of looking in the distance mainly includes one first lens barrel 110, one second lens barrel 120, a body 130 and a screw rod group 140.
First lens barrel 110 and second lens barrel 120 are to be connected in body 130 in mode parallel to each other, and a numerical camera mould (not being shown among Fig. 2) optionally is arranged among first lens barrel 110 and the body 130 or second lens barrel 120 and body 130 among.In addition, first lens barrel 110 also includes one first eyepiece stalk 111 and one first objective tube 112, and second lens barrel 120 also includes one second eyepiece stalk 121 and one second objective tube 122.First eyepiece stalk 111 and second eyepiece stalk 121 are respectively to be connected in first lens barrel 110 and second lens barrel 120 in rotating mode.
Screw rod group 140 is to be arranged on the body 130, and is to be connected in first objective tube 112 and second objective tube 122 simultaneously.In addition, screw rod group 140 also includes a knob 141 and a screw rod 142, and knob 141 is to be connected in screw rod 142.Specifically, come lead-screw 142, can make win objective tube 112 and second objective tube 122 do telescopic moving according to the direction shown in the arrow C simultaneously by rotary knob 141.
In addition, display element 105 can be arranged on the optional position of body 130, shows so that image to be provided.
Please consulting Fig. 2 A, Fig. 2 B and Fig. 3 simultaneously, will be to be arranged at the operation that the camera head 100 of looking in the distance is described among first lens barrel 110 and the body 130 with a numerical camera mould 150 below.As Fig. 2 B and shown in Figure 3, one first eyepiece group 113 is arranged among first eyepiece stalk 111, and one first object lens group 114 is arranged among first objective tube 112, by rotating first eyepiece stalk 111, the eyepiece group 113 that wins is moved according to the direction shown in the arrow C, and the knob 141 by rotating screw bolt group 140 also can make the object lens group 114 that wins move according to the direction shown in the arrow C.More specifically, the first eyepiece group 113 is with respect to the first object lens group 114, and the first eyepiece group 113 has an identical primary optic axis L1 with the first object lens group 114.150 of numerical camera mould can include a focusing mirror group 151 and an imaging apparatus 152 (for example a CCD or a CMOS), at this, for the structure that makes the camera head 100 of looking in the distance can be simplified, and the overall volume that makes the camera head 100 of looking in the distance is unlikely to too huge, so be that focusing mirror group 151 modes with fixing (focusing) are arranged among the camera head 100 of looking in the distance.In addition, between the first eyepiece group 113 and the first object lens group 114, also be provided with an Amici prism 160, and Amici prism 160 is to be arranged on the first eyepiece group 113 and the first object lens group's 114 the primary optic axis L1.In addition, focusing mirror group 151 is to be arranged between Amici prism 160 and the imaging apparatus 152, specifically, focusing mirror group 151 one second optical axis L 2 is and primary optic axis L 1 folder one set angle, Amici prism 160 is to be positioned on the intersection point D of the primary optic axis L1 and second optical axis L 2, and the mirror group's 151 that will focus focus is set in respectively on intersection point D and the imaging apparatus 152, in other words, focusing mirror group 151 focal length promptly is to equal to focus mirror group 151 to the distance of intersection point D and the distance of mirror group 151 to imaging apparatus 152 of focusing.
See also Fig. 4, when the user observes a distant place object S2 with the camera head 100 of looking in the distance, the image of object S2 can see through the first object lens group 114 earlier and image between the first object lens group 114 and the first eyepiece group 113, can image in the first eyepiece group's 113 rear then again through the first eyepiece group 113, and human eye promptly is the rear that is positioned at the first eyepiece group 113.As mentioned above, by adjusting the first eyepiece group 113 and the first object lens group's 114 position simultaneously, that is, the knob 141 that rotates first eyepiece stalk 111 and screw rod group 140 simultaneously forces the first eyepiece group 113 and the first object lens group 114 to move respectively, can adjust the image space of object S2 at the first eyepiece group, 113 rears, and make object S2 focal imaging on the retina of human eye, at this moment, human eye can be seen the image of object S2 clearly.
Yet, still as shown in Figure 4, when human eye is seen the image of object S2 clearly, the position that object S2 sees through 114 focal imagings of the first object lens group is not to be positioned on focusing mirror group 151 the focus (or intersection point D), so image also can't focal imaging after by focusing mirror group 151 on imaging apparatus 152, this means that promptly human eye knows that the image of seeing object S2 can not be known picked-up by numerical camera mould 150 (or imaging apparatus 152).
Therefore, the present invention proposes a kind of auxiliary focusing method makes numerical camera mould 150 (or imaging apparatus 152) can absorb image clearly, and this auxiliary focusing method can comprise the following steps:
At first, be shown on the display element 105 (for example LCD) after the image of object S2 on the imaging apparatus 152 amplified a particular power (for example 3 times) in the mode of Digital Zoom, that is, the image of object S2 is that the mode with number is exaggerated this particular power, at this, the image of object S2 amplify can automatic or manual mode reach.Then, as Fig. 2 B and shown in Figure 5, the knob 141 of rotating screw bolt group 140 forces the first object lens group 114 to move, up to object S2 really focal imaging on focusing mirror group 151 focus (or intersection point D), at this moment, the image of the object S2 that is exaggerated on the display element 105 (LCD) should be very clear.Then, after the image of determining object S2 was clear, any key that can press on the camera head 100 of looking in the distance made the image of object S2 return back to original size.Then, adjust eyepiece group 113 again, make the image image in focus D place, human eye also can be observed object clearly from eyepiece group 113, and is unlikely and influences the image definition that imaging apparatus 152 is absorbed.At last, press a shutter (not shown) that is arranged on the camera head 100 of looking in the distance, can allow numerical camera mould 150 (or imaging apparatus 152) absorb the image of object S2 clearly.
In addition, above-mentioned auxiliary focusing method can also be represented by process flow diagram as shown in Figure 6.
In sum, auxiliary focusing method of the present invention can be improved and looks in the distance camera head when a distant place object is focused, the user be difficult for to judge its image correct shortcoming of whether focusing on imaging apparatus (CCD) or display element (LCD screen), so auxiliary focusing method of the present invention can significantly improve the accuracy that the camera head of looking in the distance is focused to a distant place object.
Though the present invention by the preferred embodiment explanation as above, this preferred embodiment is not in order to limit the present invention.Those skilled in the art without departing from the spirit and scope of the present invention, should have the ability this preferred embodiment is made various changes and replenished, so protection scope of the present invention is as the criterion with the scope of claims.
Being simply described as follows of symbol in the accompanying drawing:
1: 113: the first eyepiece groups of digital camera
11: 114: the first object lens groups of object lens group
12: 120: the second lens barrels of eyepiece group
121: the second eyepiece stalks of 13:CCD
100: 122: the second objective tubes of camera head of looking in the distance
Lens barrel 130 in 110: the first: body
Eyepiece stalk 140 in 111: the first: screw rod group
Objective tube 141 in 112: the first: knob
142: screw rod D: intersection point
150: numerical camera mould L1: primary optic axis
151: focusing mirror group L2: second optical axis
152: imaging apparatus S1, S2: object
160: Amici prism A, B, C: arrow
Claims (9)
1. auxiliary focusing method is characterized in that being applicable to the camera head of looking in the distance, and wherein this camera head of looking in the distance comprises object lens, an Amici prism, an eyepiece, an imaging apparatus and a display element, and this method comprises the following steps:
This camera head of looking in the distance is aimed at an object, so that the video imaging of this object is on this imaging apparatus;
The image that images in this object on this imaging apparatus is amplified with a particular power, and be shown on this display element;
Adjust the position of these object lens, make the image of this shown object of this display element obtain best sharpness with respect to this Amici prism; And
The magnified image that is shown in this object on this display element is returned back to original size.
2. auxiliary focusing method according to claim 1 is characterized in that: the image of this object is that the mode with Digital Zoom is exaggerated.
3. auxiliary focusing method according to claim 1 is characterized in that: also comprise a step:
After the shown image of this display element returns back to original size, adjust this eyepiece, so that being provided, the operator obtains sharp image from this eyepiece.
4. auxiliary focusing method, it is characterized in that being applicable to the camera head of looking in the distance, wherein this camera head of looking in the distance has an object lens group, an Amici prism, a focusing mirror group, an imaging apparatus, an eyepiece group and a display element, this Amici prism is arranged between these object lens group and this eyepiece group, this focusing mirror group is arranged between this Amici prism and this imaging apparatus, after an object passes through these object lens group imaging, by this Amici prism the image of this object is passed to this focusing mirror group and this eyepiece group respectively, this method comprises the following steps:
After the image that images in this object on this imaging apparatus amplified with a particular power, on this display element, show a magnified image;
Adjust the position of this object lens faciation, make this magnified image of this shown object of this display element obtain best sharpness for this Amici prism; And
This magnified image that is shown in this object on this display element is returned back to original size.
5. auxiliary focusing method according to claim 4 is characterized in that: the image of this object is that the mode with Digital Zoom is exaggerated.
6. auxiliary focusing method according to claim 4 is characterized in that: also comprise a step:
After this shown magnified image of this display element returns back to original size, adjust this eyepiece group, so that being provided, the operator obtains sharp image from this eyepiece group.
7. auxiliary focusing method, it is characterized in that being applicable to the camera head of looking in the distance, wherein this camera head of looking in the distance has an objective tube, an Amici prism, an eyepiece stalk, an imaging apparatus, a display element, a frame body and a screw rod group, one object lens group is arranged among this objective tube, this screw rod group is to be connected in this objective tube, one eyepiece group is arranged among this eyepiece stalk, and this eyepiece stalk is to combine with this frame body rotationally, and this method comprises the following steps:
This camera head of looking in the distance is aimed at an object, so that the video imaging of this object is on this imaging apparatus;
The image that images in this object on this imaging apparatus is amplified with a particular power, and be shown on this display element;
Utilize this screw rod group to adjust this objective tube, change the position of this object lens faciation, make the image of this shown object of this display element obtain best sharpness for this Amici prism; And
The image that is shown in this object on this display element is returned back to original size.
8. auxiliary focusing method according to claim 7 is characterized in that: the image of this object is that the mode with Digital Zoom is exaggerated.
9. auxiliary focusing method according to claim 7 is characterized in that: also comprise a step:
After the shown image of this display element returns back to original size, rotate this eyepiece stalk, change the position of this eyepiece faciation for this Amici prism, so that being provided, the operator obtains sharp image from this eyepiece stalk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100555311A CN100422842C (en) | 2005-03-16 | 2005-03-16 | Auxilary focusing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100555311A CN100422842C (en) | 2005-03-16 | 2005-03-16 | Auxilary focusing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1834767A CN1834767A (en) | 2006-09-20 |
| CN100422842C true CN100422842C (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100555311A Expired - Fee Related CN100422842C (en) | 2005-03-16 | 2005-03-16 | Auxilary focusing method |
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| Country | Link |
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| CN (1) | CN100422842C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430477B (en) * | 2007-11-09 | 2011-06-08 | 鸿富锦精密工业（深圳）有限公司 | Method for judging object distance |
| CN110888284A (en) * | 2019-11-12 | 2020-03-17 | 武汉联一合立技术有限公司 | Focus moving and adjusting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953728A (en) * | 1973-11-14 | 1976-04-27 | Ernst Leitz G.M.B.H. | Apparatus for determining the relative position of the plane of maximum amplitude of the local frequency component |
| US4304474A (en) * | 1978-03-31 | 1981-12-08 | Siemens Aktiengesellschaft | Arrangement for focusing the image of an object onto an image plane |
| CN1399728A (en) * | 1999-11-24 | 2003-02-26 | 生命光学有限公司 | Visual aid in form of telescopic spectacles with an automatic focussing device |
-
2005
- 2005-03-16 CN CNB2005100555311A patent/CN100422842C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3953728A (en) * | 1973-11-14 | 1976-04-27 | Ernst Leitz G.M.B.H. | Apparatus for determining the relative position of the plane of maximum amplitude of the local frequency component |
| US4304474A (en) * | 1978-03-31 | 1981-12-08 | Siemens Aktiengesellschaft | Arrangement for focusing the image of an object onto an image plane |
| CN1399728A (en) * | 1999-11-24 | 2003-02-26 | 生命光学有限公司 | Visual aid in form of telescopic spectacles with an automatic focussing device |
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| CN1834767A (en) | 2006-09-20 |
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