TW202323924A - Lightweight high magnification camera lens having function of eliminating aberration reduces difficulty of assembling and calibrating optical system to have advantage of reducing costs - Google Patents
Lightweight high magnification camera lens having function of eliminating aberration reduces difficulty of assembling and calibrating optical system to have advantage of reducing costs Download PDFInfo
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Abstract
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本發明是關於一種具消除像差功能的輕型高倍攝像鏡頭;尤指一種適用配合在手機或平板電腦等手持式電子產品上的輕型攝像鏡頭裝置,能直接設置於手機或平板上,並和該原本手機或平板上的照相系統結合,以切換具有不同焦距的鏡頭模組,能對近距或遠距的待拍攝人或物,進行不同焦距的拍攝,到高清晰度及高倍率的照明為目的。 The invention relates to a light-duty high-power camera lens with the function of eliminating aberration; especially a light-duty camera lens device suitable for use on hand-held electronic products such as mobile phones or tablet computers, which can be directly installed on the mobile phone or tablet, and combined with the The combination of the camera system on the original mobile phone or tablet can switch the lens modules with different focal lengths, and can take pictures of people or objects to be photographed at close or long distances with different focal lengths, and the high-definition and high-magnification lighting is Purpose.
現今手機或平板電腦等手持式電子產品上的輕型攝像鏡頭,除了以輕、薄、短、小為主流之外,尚且需要有高倍率及清晰度佳為要求,才能符合消費者的期待,但由於手機或平板電腦本身尚具有其它主要的功能存在,故照相或攝影僅是其多功能項目中的一項,惟單就在照相的功能而言,由於受限於手機或平板電腦必是具有較薄的厚度,因此該設備上的照相功能就受限於體積的因素,該鏡頭及馬達無法像專業相機裝設變焦鏡頭,因為無較大的空間之故,這使得現今以手機拍照,標準鏡頭焦距是以3.5mm為標準,這使得鏡頭的焦距有限,無法對稍遠距的人、物作最佳的拍攝;而一般習用的手機為了解決這個問題,多半是在手機上設有二組鏡頭,該二組鏡頭一為直設(比如3.5mm鏡頭),另一為橫設(受限於空間因素,僅能數倍於3.5mm鏡頭),由系統操作而使該二鏡頭能分別切換使 用,但因為雖是二鏡頭,卻仍是受限於手機厚度的因素,使鏡頭焦距的問題仍有一定的限制,而使雖然可以利用該二鏡頭的切換,進行不同的焦距的拍攝,但其成果仍十分有限,即雖然可以切換鏡頭,但其實和標準3.5mm鏡頭來比較,能拉近物像的倍數仍十分的有限,由於拉近的倍數較少,對於需要對遠方拍攝的需求者而言,目前僅有2倍或4倍的鏡頭切換,可說沒有什麼特別的意義,使得切換鏡頭的設計,根本上並沒有大幅度的改善拍攝的焦距的問題,徒然使既有習用的雙鏡頭拍照的設計流於廣告噱頭居多,其實成效十分有限。 In addition to being light, thin, short, and small, the light-weight camera lenses on handheld electronic products such as mobile phones and tablet computers today also need to have high magnification and good definition to meet the expectations of consumers. Because the mobile phone or tablet computer itself still has other main functions, so photographing or photography is only one of its multi-functional items, but only in terms of the function of taking pictures, due to the limitation of mobile phone or tablet computer must have The thickness is relatively thin, so the camera function on this device is limited by the volume factor. The lens and motor cannot be equipped with a zoom lens like a professional camera. Because there is no large space, this makes it possible to take pictures with a mobile phone today. Standard The focal length of the lens is 3.5mm as the standard, which makes the focal length of the lens limited, and it is impossible to take the best shots of people and objects at a little distance; Lens, one of the two groups of lenses is set vertically (for example, 3.5mm lens), and the other is set horizontally (limited by space factors, only several times larger than 3.5mm lens), and the two lenses can be switched separately by the operation of the system make However, although it is a second lens, it is still limited by the thickness of the mobile phone, so the focal length of the lens is still limited to a certain extent. Although the switching of the second lens can be used to shoot with different focal lengths, but The results are still very limited, that is, although the lens can be switched, compared with the standard 3.5mm lens, the multiples that can zoom in on the object image are still very limited. Due to the small multiples of zooming in, for those who need to shoot from a distance As far as the current lens switching is only 2x or 4x, it can be said that there is no special significance, so that the design of the switching lens does not fundamentally improve the focal length of the shooting, which makes the existing dual The design of the camera lens is mostly an advertising gimmick, but the effect is very limited.
習用對於上述的問題,於是有長焦反射式鏡頭的發展,惟該習用傳統二次反射鏡的設計不僅遮光太多,影響進光量,也會降低光學系統的解析度,而且在製造及組裝上,若使用非球面的光學鏡片雖成效較佳但成本太高,若使用玻璃球面鏡片雖能成本降低,但是球面色差度大,在設計組裝調校亦不容易,在設計上常陷入兩難之中而難以有突破。 Conventionally, for the above problems, there is a development of telephoto reflective lens. However, the conventional design of the traditional secondary reflector not only blocks too much light, affects the amount of light entering, but also reduces the resolution of the optical system, and it is difficult to manufacture and assemble. , if using aspherical optical lenses is better, but the cost is too high, if using glass spherical lenses can reduce the cost, but the spherical chromatic aberration is large, it is not easy to design, assemble and adjust, and often fall into a dilemma in design And difficult to break through.
本發明之主要目的,在設計一具較大光圈的反射式長焦物鏡,主要是先將光線經三片至四片的光學透鏡,再將光線射入主反射鏡,而光線先經主反射鏡之向光面底層反射區,再反射至置於第三片透鏡前面的次反射鏡,進入該次反射鏡的向光面底層反射區,再反射回主反射鏡中間的場鏡,最終到達影像感測器成像,不僅解決使用較低成本之球面鏡片有色差大的困擾,也能達成仟萬畫素數等級的解析度,該畫素大小為1.5微米(μm),如此一來也可減化了本發明鏡頭之光學系統在組裝調校的困難,使本發明具有降低成本之優點,另本發明又在次反射鏡尺寸縮小至36-40%更可 以減少光的阻礙,得到明亮而清晰的畫質。 The main purpose of the present invention is to design a reflective telephoto objective lens with a larger aperture, mainly to first pass the light through three to four optical lenses, and then inject the light into the main reflector, and the light first passes through the main reflection The bottom reflective area of the light-facing surface of the mirror, and then reflected to the secondary reflector placed in front of the third lens, enters the bottom reflective area of the light-facing surface of the secondary reflector, and then reflects back to the field mirror in the middle of the main reflector, and finally reaches Image sensor imaging not only solves the problem of large chromatic aberration caused by the use of lower-cost spherical lenses, but also achieves a resolution of tens of millions of pixels. The pixel size is 1.5 microns (μm). The difficulty of assembling and adjusting the optical system of the lens of the present invention is reduced, so that the present invention has the advantage of reducing costs, and the present invention can reduce the size of the secondary mirror to 36-40%. To reduce light obstruction, get bright and clear picture quality.
為達到上述的目的,本發明可以用下列的方式來達成:係在鏡頭殼體內的孔徑光闌處依序設有:一第一光學鏡,係為一凹透鏡,且該第一光學鏡的凹弧面正位於孔徑光闌處;一第二光學鏡,係為一凸透鏡;該第二光學鏡與前方之第一光學鏡在消除光影的像差;一次反射鏡,係設於第二光學鏡的後方,該次反射鏡的直徑較第二光學鏡為小,且在朝向該第二光學鏡的側面設為凹弧面,而在該凹弧面的背側形成底層反射區;一主反射鏡,係朝鏡頭殼體的孔徑光闌方向形成一凹弧體,在前側及背側分別再各設有第一場鏡及第二場鏡,在該主反射鏡的前側迎光面處,設有底層反射區;一影像感測器,係設於主反射鏡背側的第二場鏡後方,以接收消除了像差的優質成像光線。 In order to achieve the above-mentioned purpose, the present invention can be achieved in the following manner: the aperture stop in the lens housing is provided with: a first optical mirror, which is a concave lens, and the concave lens of the first optical mirror The arc surface is located at the aperture stop; a second optical mirror is a convex lens; the second optical mirror and the first optical mirror in front are eliminating the aberration of light and shadow; the primary reflector is arranged on the second optical mirror At the rear, the diameter of the secondary reflector is smaller than that of the second optical mirror, and the side facing the second optical mirror is set as a concave arc surface, and the bottom reflection area is formed on the back side of the concave arc surface; a main reflector The mirror is a concave arc body formed toward the aperture stop of the lens housing, and a first field mirror and a second field mirror are respectively provided on the front side and the back side, and at the front light-facing surface of the main reflector, There is a bottom reflective area; an image sensor is arranged behind the second field lens on the back side of the main reflector to receive high-quality imaging light with aberration eliminated.
本發明之另一目的,在將本發明之次反射鏡縮小至原本鏡片的百分之四十以下,則在次反射鏡周側區域能得到更優良的進光空間,故攝像時能得到更明亮而清晰的景像。 Another object of the present invention is to reduce the secondary reflector of the present invention to less than 40% of the original lens, so that a better light-incoming space can be obtained in the peripheral area of the secondary reflector, so that a better light-incoming space can be obtained when taking pictures. Bright and clear images.
本發明之再一目的,在本發明的次反射鏡縮小至原本鏡片直徑的百分之四十,但因為配合一第三光學鏡與之貼合,而使該第三光學鏡直接構成為次反射鏡的支撐體,在組裝上及調校上將更為方便,同時該第三光學鏡因本身為透光,故不會有遮阻光線的缺點。 Another object of the present invention is that the secondary reflector of the present invention is reduced to 40% of the diameter of the original mirror, but because a third optical mirror is attached to it, the third optical mirror is directly formed as a secondary reflector. The supporting body of the reflecting mirror will be more convenient in assembly and adjustment, and at the same time, because the third optical mirror itself is light-transmitting, it will not have the disadvantage of blocking light.
〔本發明〕 〔this invention〕
1:攝像鏡頭 1: camera lens
10:第一光學鏡 10: The first optical mirror
11:凹弧面 11: concave arc surface
20:第二光學鏡 20: Second optical mirror
30:次反射鏡 30: secondary reflector
301:凹弧面 301: concave arc surface
31:底層反射區 31: Bottom reflection area
40:第三光學鏡 40: The third optical mirror
41:副鏡 41: secondary mirror
50:主反射鏡 50: Primary reflector
51:底層反射區 51: Bottom reflection area
60:第一場鏡 60: The first shot
61:第二場鏡 61: The second shot
70:影像感測器 70: Image sensor
80:鏡頭殼體 80: Lens housing
81:孔徑光闌 81: Aperture diaphragm
90:手機 90: mobile phone
91:攝像鏡頭 91: camera lens
M1:攝像景區 M1: Camera Scenic Area
M2:攝像景區 M2: Camera Scenic Area
L:光線 L: light
圖1係本發明組合後實施時之光線行進說明示意圖。 Fig. 1 is a schematic diagram illustrating the progress of light when the present invention is combined and implemented.
圖2係本發明之光學系統分解圖1。
Fig. 2 is an exploded
圖3係本發明之光學系統分解圖2。 Fig. 3 is an exploded view 2 of the optical system of the present invention.
圖4係本發明之光學系統剖視圖。 Fig. 4 is a sectional view of the optical system of the present invention.
圖5係本發明使用在手機上之顯像示意圖。 Fig. 5 is a schematic diagram of the display of the present invention used on a mobile phone.
圖6係本發明之另一實施例的結構說明圖。 Fig. 6 is a structural explanatory diagram of another embodiment of the present invention.
圖7係圖6之光線行進說明示意圖。 FIG. 7 is a schematic diagram illustrating the light traveling in FIG. 6 .
請參看圖1、圖2、圖3、圖4所示,其中圖1及圖2分別是由正向及背向構成的分解圖,配合圖3、圖4以利詳細說明鏡片之結構,本發明攝像鏡頭1,主要在鏡頭殼體80內的孔徑光闌81(即aperture stop)處依序設有:
Please refer to Figure 1, Figure 2, Figure 3, and Figure 4. Figure 1 and Figure 2 are exploded views of the front and rear views respectively. Cooperate with Figure 3 and Figure 4 to explain the structure of the lens in detail. Inventing the
一第一光學鏡10,係為一凹透鏡,且該第一光學鏡10的凹弧面11正位於孔徑光闌81處,以收納光線。
A first
一第二光學鏡20,係為一凸透鏡;且該第二光學鏡20與前方之第一光學鏡10可以修正光影的像差。
A second
一次反射鏡30,係設於第二光學鏡20的後方,該次反射鏡30的直徑是第二光學鏡20直徑的百分之四十以下,且在朝向該第二光學鏡20的側面設為凹弧面301,而在該凹弧面301的背側形成底層反射區31;該次反射鏡30由於體積較小,在中心線與其他光學系統,如:第一光學鏡10及第二光學鏡20的中心綫對齊時,該次反射鏡30應設一夾具將其懸吊設在鏡頭殼體80內,但該夾具可取用現有習知的設計,在此不另作贅述。
The
為使前述體積較小的次反射鏡30得到較佳的固定,又不遮光的情況之下,本發明係設有一第三光學鏡40,係設於該次反射鏡30的後方,並使該次反射鏡30與第三光學鏡40貼合,使該第三光學鏡40係為支撐次
反射鏡30的結構體,而該第三光學鏡40因本身為透光,故不會有遮光的缺點,較習用單純使用鏡片夾具更為優良。
In order to obtain better fixation of the aforementioned smaller
一主反射鏡50,係朝鏡頭殼體80的孔徑光闌81方向形成一凹弧體,在前側及背側分別再各設有第一場鏡60及第二場鏡61,在該主反射鏡50的前側迎光面處,設有底層反射區51。
A
一影像感測器70,係設於主反射鏡50背側的第二場鏡61後方,以接收優質的成像光線L。
An
本發明在使用時,如圖1所示,當光線L由鏡頭殼體80的孔徑光闌81進入,經過第一光學鏡10及第二光學鏡20後,能夠預先消除像差,且因次反射鏡30體積較小,進入之光線L由次反射鏡30的周緣外部空間直接穿透第三光學鏡40至主反射鏡50的外環區域面積,再經該主反射鏡50的底層反射區51向前反射至次反射鏡30的底層反射區31,再朝向主反射鏡50的前方的第一場鏡60射出,該光線L經第一場鏡60及第二場鏡61縮小影像後,形成優質的成像再傳給影像感測器70接收,得到長焦距的高倍攝像功能。
When the present invention is in use, as shown in FIG. 1, when light L enters through the
請參看圖5所示,本發明之攝像鏡頭1可與手機90進行有線或無線的訊號連接,當手機90的攝像鏡頭91對準攝像景物,可產生一般之攝像景區M1,當欲使用本發明的攝像鏡頭1時,只要將同軸中心位置對準欲進行放大的景物(圖5中的樹木時),由現有的電子設備,即可切換成本發明攝像鏡頭1所攝取的攝像景區M2,由於本發明的反射式的長焦設計,又具有消除像差的功能,使得放大的景像清晰被呈現。
Please refer to shown in Fig. 5,
請參看圖6及圖7,主要是本發明的簡易填加的實施例,係
在原本該第三光學鏡40的靠主反射鏡50側,再貼設有一副鏡41,該副鏡41為一調整影像之光學鏡片;主要可用在消除像差,或過濾不需要的有色波長,這使得主反射鏡50將光線L反射至次反射鏡30之前,分別經過的副鏡41及第三光學鏡40,再由次反射鏡30朝向主反射鏡50的前方的第一場鏡60射出,該光線L經第一場鏡60及第二場鏡61縮小影像後,形成所需要的優質成像再傳給影像感測器70接收,得到長焦距的高倍攝像功能。
Please refer to Fig. 6 and Fig. 7, it is mainly the embodiment of the simple and easy addition of the present invention, is
On the side of the
因此,使用本發明時,將具有如下的優點: Therefore, when using the present invention, will have following advantage:
1.由於本發明使用反射式的放大倍率設計,在前方設有第一光學鏡及第二光學鏡,用以消除像差,使畫質更為清晰,是本發明主要的優點。 1. Since the present invention uses a reflective magnification design, a first optical mirror and a second optical mirror are provided in front to eliminate aberrations and make the image quality clearer, which is the main advantage of the present invention.
2.由於本發明將次反射鏡直徑縮小至原本鏡片直徑的百分之四十以下,則反射鏡周側的外側即不會有習用遮光的缺點,整體而言就能得到更優良的進光,故本發明能得到更明亮而清晰的景像,是本發明另一優點。 2. Since the present invention reduces the diameter of the secondary reflector to less than 40% of the original lens diameter, the outer side of the reflector will not have the disadvantages of conventional shading, and overall, better light can be obtained , so the present invention can obtain a brighter and clearer scene, which is another advantage of the present invention.
3.承上述,本發明的次反射鏡縮小,但再配合一第三光學鏡與之貼合,使該第三光學鏡係為支撐次反射鏡的結構體,而該第三光學鏡因本身為透光,故不會有遮光的缺點,較習用單純使用鏡片夾具更為優良,且組裝及調校皆更為方便。 3. In view of the above, the sub-reflector of the present invention is reduced, but a third optical mirror is attached to it, so that the third optical mirror is a structure supporting the sub-reflector, and the third optical mirror itself is It is light-transmitting, so it will not have the disadvantage of shading. It is better than the usual lens holder, and it is more convenient to assemble and adjust.
本發明所述的結構,僅是較佳實施例而已,並非用以限定本發明實施之範圍;故當熟悉此技藝所作出等效或輕易的變化者,在不脫離本創作之精神與範圍下所作之均等變化與修飾,例如:大致改變鏡片之形狀或尺寸,凹凸鏡的數目變化以等效取代,運用類似的光學系統,或使用雷同的材質等,但係運用本發明之特徵者,皆應涵蓋於本發明之特徵內。 The structure described in the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention; therefore, those who are familiar with the equivalent or easy changes made by this technology will not depart from the spirit and scope of this creation. Equal changes and modifications made, such as substantially changing the shape or size of the lens, replacing the number of convex and concave mirrors with equivalents, using similar optical systems, or using the same material, etc., but those that use the features of the present invention are all should be covered by the features of the present invention.
1:攝像鏡頭 1: camera lens
10:第一光學鏡 10: The first optical mirror
11:凹弧面 11: concave arc surface
20:第二光學鏡 20: Second optical mirror
30:次反射鏡 30: secondary reflector
301:凹弧面 301: concave arc surface
31:底層反射區 31: Bottom reflection area
40:第三光學鏡 40: The third optical mirror
50:主反射鏡 50: Primary reflector
51:底層反射區 51: Bottom reflection area
60:第一場鏡 60: The first shot
61:第二場鏡 61: The second shot
70:影像感測器 70: Image sensor
80:鏡頭殼體 80: Lens housing
81:孔徑光闌 81: Aperture stop
L:光線 L: light
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110145519A TWI810735B (en) | 2021-12-06 | 2021-12-06 | Lightweight high-magnification camera lens with aberration cancellation |
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