CN1734345A - Image acquisition apparatus and method for adjusting view finder - Google Patents
Image acquisition apparatus and method for adjusting view finder Download PDFInfo
- Publication number
- CN1734345A CN1734345A CN200410056488.6A CN200410056488A CN1734345A CN 1734345 A CN1734345 A CN 1734345A CN 200410056488 A CN200410056488 A CN 200410056488A CN 1734345 A CN1734345 A CN 1734345A
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- camera lens
- picture window
- central shaft
- image capture
- focal length
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Abstract
The invention relates to a camera acquisition device, which comprises the following parts: a landscape lens, a lens and an adjustment. Light shines the landscape lens into the first central axis and enters the lens along the second central axis. The adjustment and landscape lens can roll around the second central axis by adjusting the focus of lens. When the first and second central axis intersects at one point, the distance of intersection and lens equals to the relating focus.
Description
Technical field:
The invention relates to a kind of image capture unit, particularly adjust angle with lens focus, so as to the image capture unit of error between minimizing and camera lens gained image about a kind of image that picture window is seen.
Background technology:
Generally speaking, by traditional slr camera (Single Lens Reflex Camera, the image that picture window SLR) is seen come by camera lens reflection in fact, thus with egative film on be same by the formed image of camera lens.Yet, by two anti-phase machines (Twin Lens ReflexCamera, TLR) image that picture window is seen is then different with the obtained image of camera lens, therefore our image of seeing by the picture window of two anti-phase machines, have a little gap with the imaging on egative film in fact, during especially from bat mode adjustment far away to the close-perspective recording pattern, photo is produced take pictures the problem of coverage bias, and difference is big more when the distance of shooting is near more.
In view of this, the invention provides a kind of image capture unit with picture window angle-adjusting mechanism, applicable to a camera, wherein the angle of picture window can suitably be adjusted along with lens focus, so as to reducing the error between picture window and lens imaging.
Summary of the invention:
A kind of image capture unit comprises a picture window, a camera lens and an adjustment part, and a light enters picture window along one first central shaft, and enters camera lens along one second central shaft.Above-mentioned adjustment part connects camera lens and picture window, and can be around described second central shaft rotation, so as to adjusting a focal length of camera lens.Rotate when adjustment part drives described picture window when second central shaft rotates, and make first, second central shaft intersect at an intersection point, the distance of wherein above-mentioned intersection point and camera lens is rough to be equal to described focal length.
Foregoing image capture unit also comprises a fitting, is connected between picture window and the adjustment part, when adjustment part promotes fitting when second central shaft rotates, drives the picture window rotation simultaneously.
Foregoing image capture unit also comprises one first pivot, wherein when rotating, second central shaft increases the focal length of camera lens along a first direction when adjustment part, promoting fitting simultaneously makes picture window rotate around first pivot, and make the rough focal length that is equal to of distance of intersection point and camera lens, this moment, first central shaft was rough parallel with second central shaft, and picture window is also rough parallel with camera lens.
Foregoing image capture unit wherein shortens the focal length of camera lens along a second direction when adjustment part when second central shaft rotates, fitting drove picture window and rotated around first pivot this moment, makes that the distance of above-mentioned intersection point and camera lens is rough to be equal to described focal length.
In a preferred embodiment, described image capture unit also comprises a stop part, the rough camera lens that is parallel to, and when stop part supported with the picture window butt, camera lens kept rough parallel with picture window.
Foregoing image capture unit also comprises an elastic parts and one second pivot, and wherein second pivot is arranged in the elastic parts, and elastic parts is connected between stop part and the picture window again, and imposes an elastic force and give picture window.
Foregoing image capture unit, wherein elastic parts is a torsion spring.
Description of drawings:
Fig. 1 represents the explosive view of image capture unit among the present invention;
Fig. 2 a, Fig. 2 b and Fig. 2 c represent the synoptic diagram of the present invention when far away bat pattern;
Fig. 3 a, Fig. 3 b and Fig. 3 c represent the synoptic diagram of the present invention when the close-perspective recording pattern.
Symbol description:
1～stop part
11～stop section
2～elastic parts
3～the second pivots
4～picture window
5～the first pivots
6～fitting
61～projection
7～the 3rd pivots
8～camera lens
9～adjustment part
91～contact site
P～intersection point
The distance of L～camera lens and intersection point
Y1, Y1 '～first central shaft
Y2～second central shaft
Embodiment:
At first see also Fig. 1, the figure shows the synoptic diagram of image capture unit among the present invention.As shown in the figure, it is one of embodiments of the invention, comprises a stop part 1, an elastic parts 2, a picture window 4, one first pivot 5, one second pivot 3, a fitting 6, one the 3rd pivot 7, a camera lens 8 and an adjustment part 9.Described stop part 1 has an outstanding stop section 11, rotate in order to restriction picture window 4, wherein elastic parts 2 is a torsion spring (torsion spring), be connected between described stop part 1 and the picture window 4, described again second pivot 3 passes elastic parts 2, and it can be rotated also around second pivot 3 can provide an elastic force to give picture window 4.
As shown in Figure 1, definition has an X-Y-Z rectangular coordinate in the space, and wherein the definition of picture window 4 central authorities has one first central shaft Y1 (being parallel to Y-axis), and light is rough to enter picture window 4 along the first central shaft Y1 direction.In addition, described first pivot 5 is parallel to X-direction and passes picture window 4, and picture window 4 can be adjusted its angle around 5 rotations of first pivot.In addition, described camera lens 8 central definition have one second central shaft Y2 (being parallel to Y-axis), and light is rough to enter camera lens 8 along the second central shaft Y2 direction.9 of adjustment parts are fixed in connecting portion 81 outstanding on the camera lens 8, drive camera lens 8 whereby together around second central shaft Y2 rotation, and then adjust the focal length of shooting.
In addition, described the 3rd pivot 7 is arranged in an end of fitting 6.In Fig. 1, the 3rd pivot 7 is parallel with Y direction, and fitting 6 then is connected between picture window 4 and the adjustment part 9.As shown in the figure, adjustment part 9 is provided with an outstanding contact site 91, so as to fitting 6 surface below sliding contacts, fitting 6 is provided with two projections 61 again, butt picture window 4 surface below.
Then see also Fig. 2 a, Fig. 2 b and Fig. 2 c, this three figure represents the synoptic diagram of image capture unit of the present invention in bat pattern far away, and the attitude of picture window can be switched between a bat pattern far away (shown in Fig. 2 a～Fig. 2 c) and a close-perspective recording pattern (shown in Fig. 3 a～Fig. 3 c) among the present invention.Shown in Fig. 2 b, the object distance of taking when desire is when (far clapping pattern) far away, the first central shaft Y1 forms rough parallel state with the second central shaft Y2, this moment, picture window 4 was also rough parallel with camera lens 8, therefore when desire shooting distant place object (far clapping pattern), the image that is observed by picture window 4 can more level off to by the imaging of camera lens 8.
Yet, when the object distance of desire shooting is nearer, can synchronously adjust the shooting focal length of camera lens 8 and the attitude angle of picture window 4 by rotating described adjustment part 9, and then can be by described bat mode switch far away to the close-perspective recording pattern.And please consult Fig. 3 a, Fig. 3 b and Fig. 3 c simultaneously, this three figure represents the synoptic diagram of the present invention when the close-perspective recording pattern, when desiring to be the close-perspective recording pattern by described bat mode switch far away, the user can drive camera lenses 8 by adjustment part 9 and rotate around the second central shaft Y2 along a second direction A2.Therefore shown in Fig. 3 a and Fig. 3 b, this moment is owing to described elastic parts 2 produces a spring force by compression, can promote picture window 4 around 5 rotations of first pivot and make fitting 6 rotate one first angle a, picture window 4 above wherein projection 61 supports in order to butt.
As previously mentioned, when adjustment part 9 when a second direction A2 rotates, described fitting 6 rotates one first angle a around the 3rd pivot 7,91 of contact sites produced with fitting 6 surface below and slided this moment, and made picture window 4 and camera lens 8 be inclination (shown in Fig. 3 c).Then see also Fig. 3 b and Fig. 3 c, when fitting 6 is rotated down one first angle a, the position that the first central shaft Y1 rotates one second angle b to Y1 ', first, second central shaft Y1 ', Y2 intersect at a nearer intersection point P at this moment, and first, second central shaft Y1 ', Y2 form an angle (the second angle b), and intersection point P and camera lens 8 have a distance L in addition.Specifically, when adjustment part 9 drives picture window 4 and rotates to the described second angle b, adjustment part 9 also makes camera lens 8 rotation simultaneously, makes the focal length of camera lens 8 adjust to the rough equal position with intersection point P, that is this moment camera lens 8 the rough distance L that equals camera lens 8 and intersection point P of focal length.
On the contrary, when desiring to switch back bat pattern far away (shown in Fig. 2 a～Fig. 2 c) by described close-perspective recording pattern (shown in Fig. 3 a～Fig. 3 c), can rotate around the second central shaft Y2 along a first direction A1 with camera lens 8 by rotating adjustment part 9, make camera lens 8 have long shooting focal length.In particular, the contact site 91 of adjustment part 9 tops upwards promotes fitting 6 and rotates (shown in the direction of arrow among Fig. 2 b) according to anticlockwise around the 3rd pivot 7 at this moment.As previously mentioned, when rotating described adjustment part 9, fitting 6 promotes the picture window 4 of top around 5 rotations of first pivot, and makes the central shaft Y1 that wins form rough parallel state (shown in Fig. 2 c) with the second central shaft Y2.At this moment, elastic parts 2 is compressed, surface, picture window 4 top then with stop part 1 on outstanding stop section 11 butts and limit it and be rotated further.Because the first central shaft Y1 forms rough parallel state with the second central shaft Y2, this moment, picture window 4 was also rough parallel with camera lens 8, therefore when desire shooting distant place object (far clapping pattern), the image that is observed by picture window 4 can more level off to by the imaging of camera lens 8.
In sum, can be in rotating the process of adjustment part 9 by the present invention so as to cutaway 8 shooting focal lengths, side by side adjust the attitude angle of top picture window 4, not only be not easy to use the person thus directly by picture window 4 observing scenes, and when switching bat far away or close-perspective recording pattern, error between the image of image that picture window 4 is observed and the real shooting of camera lens can reduce significantly, and makes picture window 4 viewed image positions more level off to the image space on egative film by camera lens 8.Shown in Fig. 3 c, when the first angle a that rotates when fitting 6 is big more, the formed second angle b of first, second central shaft Y1 ', Y2 is also big more, and the distance L that intersection point P and camera lens are 8 is then short more, is fit to the nearer object (close-perspective recording pattern) of shooting distance this moment.Otherwise, when adjustment part 9 drive camera lenses 8 according to first direction A1 when the second central shaft Y2 rotates, promoting top picture window 4 by fitting 6 can make the angle b between first, second central shaft Y1 ', Y2 reduce, the distance L that intersection point P and camera lens are 8 is then far away more, is fit to shooting distance object (far clapping pattern) far away this moment.
Yet, also can omit fitting 6 among another embodiment, and make adjustment part 9 with different kenels directly versatilely with picture window 4 surface below butts, wherein adjustment part 9 can be L type structure, one side butt picture window 4 of L type adjustment part 9, another side then is connected with camera lens 8, changes the attitude of picture window 4 by rotating adjustment part 9, can reach equally in described close-perspective recording/far the clap function of switching between pattern.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting scope of the present invention, any insider, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim book person of defining.
Claims (8)
1. image capture unit comprises:
One picture window, a light enters this picture window along one first central shaft;
One camera lens, a light enters this camera lens along one second central shaft; And
One adjustment part, connect this camera lens and this picture window, and can be around this second central shaft rotation, so as to adjusting the focal length of this camera lens, driving this picture window when this adjustment part rotation rotates, make this first, second central shaft intersect at an intersection point, wherein rough this focal length that is equal to of the distance of this intersection point and this camera lens.
2. image capture unit as claimed in claim 1 also comprises a fitting, is connected between this picture window and this adjustment part, when this adjustment part promotes this fitting when this second central shaft rotates, drives this picture window rotation simultaneously.
3. image capture unit as claimed in claim 2, also comprise one first pivot, wherein when rotating, this second central shaft increases the focal length of this camera lens along a first direction when this adjustment part, promoting this fitting simultaneously makes this picture window around this first pivot rotation, and make rough this focal length that is equal to of distance of this intersection point and this camera lens, this moment, this first central shaft was rough parallel with this second central shaft, and this picture window is also rough parallel with this camera lens.
4. image capture unit as claimed in claim 3, wherein when rotating, shortens this second central shaft the focal length of this camera lens along a second direction when this adjustment part, this moment, this fitting drove this picture window around the rotation of this first pivot, made rough this focal length that is equal to of distance of this intersection point and this camera lens.
5. image capture unit as claimed in claim 1 also comprises a stop part, rough this camera lens that is parallel to, and when this stop part and this picture window butt, this camera lens keeps rough parallel with this picture window.
6. image capture unit as claimed in claim 5, also comprise an elastic parts and one second pivot, wherein this second pivot is arranged in this elastic parts, and this elastic parts is connected between this stop part and this picture window in addition, and imposes an elastic force and give this picture window.
7. image capture unit as claimed in claim 6, wherein this elastic parts is a torsion spring.
8. method of adjusting picture window, be applicable to an image capture unit, this image capture unit comprises a camera lens and a picture window, this camera lens connects this picture window and has a focal length, one light enters this picture window along one first central shaft, and enter this camera lens along one second central shaft, wherein this first central shaft and this second central shaft intersect at an intersection point, and this method comprises:
This camera lens is rotated around this second central shaft, and this picture window rotation of interlock simultaneously is so as to changing the distance of this focal length and this intersection point and this camera lens, makes rough this focal length that equals of this distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410056488.6A CN1734345A (en) | 2004-08-11 | 2004-08-11 | Image acquisition apparatus and method for adjusting view finder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410056488.6A CN1734345A (en) | 2004-08-11 | 2004-08-11 | Image acquisition apparatus and method for adjusting view finder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1734345A true CN1734345A (en) | 2006-02-15 |
Family
ID=36076827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200410056488.6A Pending CN1734345A (en) | 2004-08-11 | 2004-08-11 | Image acquisition apparatus and method for adjusting view finder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1734345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113227894A (en) * | 2020-07-29 | 2021-08-06 | 深圳市大疆创新科技有限公司 | Electronic viewfinder and photographing device |
-
2004
- 2004-08-11 CN CN200410056488.6A patent/CN1734345A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113227894A (en) * | 2020-07-29 | 2021-08-06 | 深圳市大疆创新科技有限公司 | Electronic viewfinder and photographing device |
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