TWI729692B - Zoom projection system - Google Patents

Zoom projection system Download PDF

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Publication number
TWI729692B
TWI729692B TW109103565A TW109103565A TWI729692B TW I729692 B TWI729692 B TW I729692B TW 109103565 A TW109103565 A TW 109103565A TW 109103565 A TW109103565 A TW 109103565A TW I729692 B TWI729692 B TW I729692B
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lens
lens group
group
projection system
focal length
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TW109103565A
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TW202131050A (en
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吳昇澈
黃威豪
陳宥達
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上暘光學股份有限公司
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Abstract

一種變焦投影系統,可將架構拆成五群,即為第一透鏡群、第二透鏡群、第三透鏡群、第四透鏡群及第五透鏡群,第一透鏡群包括第一透鏡及第二透鏡、第二透鏡群包括第三透鏡、第三透鏡群包括第四透鏡及第五透鏡所組成之雙膠合透鏡、第四透鏡群包括第六透鏡、第七透鏡及第八透鏡所組成之三膠合透鏡及第九透鏡、第五透鏡群包括第十透鏡,並以各透鏡群之相互配合,使透鏡組合架構簡單及成本便宜,能兼顧投影成像品質之功效增進。 A zoom projection system, the structure can be disassembled into five groups, namely the first lens group, the second lens group, the third lens group, the fourth lens group and the fifth lens group. The first lens group includes the first lens and the second lens group. Two lenses, a second lens group including a third lens, a third lens group including a double cemented lens composed of a fourth lens and a fifth lens, and a fourth lens group including a sixth lens, a seventh lens and an eighth lens The triplet lens, the ninth lens, and the fifth lens group include the tenth lens, and the coordination of each lens group makes the lens assembly structure simple and cheap, and can take into account the effect of improving the quality of projection imaging.

Description

變焦投影系統 Zoom projection system

本發明有關一種變焦投影系統,尤指一種以各透鏡群之相互配合,使透鏡組合架構簡單及成本便宜,能兼顧投影成像品質。 The present invention relates to a zoom projection system, in particular to a system that uses the cooperation of various lens groups to make the lens combination structure simple and cheap, and can take into account the quality of projection imaging.

按,由於投影機之技術已逐漸成熟,其主要在於影像能清晰成像,而投影之技術特徵由複數透鏡群進行變焦或定焦。惟查,各該透鏡群之焦距及各該透鏡群之透鏡組合架構皆影響投影成像品質,而如何調整各該透鏡群之焦距,並配合各該透鏡群之透鏡組合架構簡單及成本便宜,也能兼顧投影成像品質,乃為本發明所欲解決的課題。 According to the fact that the technology of the projector has gradually matured, its main feature is that the image can be clearly imaged, and the technical feature of the projection is zoom or fixed focus by a plurality of lens groups. However, it is found that the focal length of each lens group and the lens combination structure of each lens group affect the quality of projection imaging. How to adjust the focal length of each lens group and match the lens combination structure of each lens group is simple and cheap, and also The ability to take into account the quality of projection imaging is the subject to be solved by the invention.

緣是,本發明之主要目的,在提供一種變焦投影系統,其以各透鏡群之相互配合,進而使透鏡組合架構簡單及成本便宜,也能兼顧投影成像品質之功效增進。 The reason is that the main purpose of the present invention is to provide a zoom projection system, which cooperates with each lens group to make the lens assembly structure simple and low cost, and can also take into account the effect of improving the quality of projection imaging.

本發明之又一目的,提供一種變焦投影系統,其以各透鏡群之相互配合,進而使各透鏡群之間配置光圈大,以提升投影成像品質之功效增進。 Another object of the present invention is to provide a zoom projection system, which cooperates with each lens group so that the aperture is arranged between each lens group to increase the effect of improving the quality of projection imaging.

為達上述目的,本發明採用之技術手段包含:一第一透鏡群,具有負屈光力,包括至少一第一透鏡及一第二透鏡,該第一透鏡為具有負屈光力之彎月非球面透鏡及該第二透鏡為具有負屈光力之球面透鏡;一第二透鏡群,具有正屈光力,包括至少一第三透鏡;一第三透鏡群,具有正屈光力,包括至少一雙膠合透鏡,該雙膠合透鏡具有正屈光力,並由一第四透鏡及一第五透鏡所組成;一第四透鏡群,具有正屈光力,包括至少 一三膠合透鏡及一第九透鏡,該三膠合透鏡具有負屈光力,並由一第六透鏡、一第七透鏡及一第八透鏡所組成,該第七透鏡為雙凹球面透鏡,該第八透鏡為具有正屈光力之雙凸透鏡;以及一第五透鏡群,具有正屈光力,包括至少一第十透鏡。 To achieve the above objective, the technical means adopted by the present invention include: a first lens group with negative refractive power, including at least a first lens and a second lens, the first lens is a meniscus aspheric lens with negative refractive power and The second lens is a spherical lens with negative refractive power; a second lens group with positive refractive power includes at least one third lens; a third lens group with positive refractive power includes at least one doublet lens, the doublet lens It has positive refractive power and is composed of a fourth lens and a fifth lens; a fourth lens group has positive refractive power, including at least A triplet lens and a ninth lens. The triplet has negative refractive power and is composed of a sixth lens, a seventh lens, and an eighth lens. The seventh lens is a biconcave spherical lens. The lens is a biconvex lens with positive refractive power; and a fifth lens group with positive refractive power includes at least one tenth lens.

依據前揭特徵,該第一透鏡之焦距在-25mm~-50mm間;該第二透鏡之焦距在-25mm~-50mm間;該雙膠合透鏡之焦距在25mm~80mm間;該三膠合透鏡之焦距在-20mm~-50mm間;該第七透鏡之焦距在-5mm~-20mm間;該第八透鏡之焦距在20mm~50mm間。 According to the aforementioned features, the focal length of the first lens is between -25mm~-50mm; the focal length of the second lens is between -25mm~-50mm; the focal length of the doublet lens is between 25mm~80mm; the focal length of the triplet lens The focal length is between -20mm and -50mm; the focal length of the seventh lens is between -5mm and -20mm; and the focal length of the eighth lens is between 20mm and 50mm.

依據前揭特徵,該第二透鏡之阿貝數介於50~82間。 According to the aforementioned features, the Abbe number of the second lens is between 50 and 82.

依據前揭特徵,該第七透鏡之阿貝數介於20~28間。 According to the aforementioned features, the Abbe number of the seventh lens is between 20-28.

依據前揭特徵,該第一透鏡為塑膠所構成;該第二透鏡為玻璃所構成;該雙膠合透鏡為玻璃所構成;該第七透鏡為玻璃所構成;該第八透鏡為模造玻璃所構成。 According to the features disclosed above, the first lens is made of plastic; the second lens is made of glass; the doublet lens is made of glass; the seventh lens is made of glass; the eighth lens is made of molded glass .

依據前揭特徵,該第一透鏡群之阿貝數加總總合介於90~140間;該第二透鏡群之阿貝數介於25~55間;該第三透鏡群之阿貝數加總總合介於50~90間;該第四透鏡群之阿貝數加總總合介於200~260間;該第五透鏡群之阿貝數介於10~20間。 According to the aforementioned features, the sum of the Abbe numbers of the first lens group is between 90 and 140; the Abbe numbers of the second lens group are between 25 and 55; the Abbe numbers of the third lens group The sum total is between 50 and 90; the sum total of the Abbe number of the fourth lens group is between 200 and 260; the sum total of the Abbe number of the fifth lens group is between 10 and 20.

依據前揭特徵,該變焦投影系統滿足以下條件:-2.0<f1a/fw<-1.0;7.5>f4/fw>6;1.35<Bf/fw<1.45;其中,f1a為該第一透鏡群之有效焦距,f4為該第四透鏡群之有效焦距,fw為廣角狀態下的焦距,Bf為廣角端的後焦距等效空氣隙。 According to the aforementioned features, the zoom projection system satisfies the following conditions: -2.0<f1a/fw<-1.0; 7.5>f4/fw>6; 1.35<Bf/fw<1.45; where f1a is the effective value of the first lens group Focal length, f4 is the effective focal length of the fourth lens group, fw is the focal length in the wide-angle state, and Bf is the equivalent air gap of the back focal length at the wide-angle end.

依據前揭特徵,該變焦投影系統可切換廣角端與望遠端,並設定 該第一透鏡群為對焦群,令該第一透鏡群與該第五透鏡群不移動,而該第二透鏡群、該第三透鏡群及該第四透鏡群對一成像元件進行遠近變化,當切換成廣角端時,則該第二透鏡群靠近該成像元件、該第三透鏡群靠近該成像元件及該第四透鏡群靠近該成像元件,或當切換成望遠端時,則該第二透鏡群遠離該成像元件、該第三透鏡群遠離該成像元件及該第四透鏡群遠離該成像元件。 According to the features of the previous disclosure, the zoom projection system can switch between the wide-angle end and the telephoto end, and set The first lens group is a focusing group, so that the first lens group and the fifth lens group do not move, and the second lens group, the third lens group, and the fourth lens group change the distance of an imaging element, When switched to the wide-angle end, the second lens group is close to the imaging element, the third lens group is close to the imaging element, and the fourth lens group is close to the imaging element, or when it is switched to the telephoto end, the second lens group is close to the imaging element. The lens group is away from the imaging element, the third lens group is away from the imaging element, and the fourth lens group is away from the imaging element.

依據前揭特徵,該變焦投影系統之投影變倍比為高變焦倍率1.25x。 According to the aforementioned features, the projection zoom ratio of the zoom projection system is a high zoom magnification of 1.25x.

依據前揭特徵,更包括一光圈,係介於1.6~2.0,並位在該第三透鏡群與該第四透鏡群之間。 According to the aforementioned features, it further includes an aperture, which is between 1.6 and 2.0, and is located between the third lens group and the fourth lens group.

藉助上揭技術手段,本發明以各該透鏡群之相互配合,進而使透鏡組合架構簡單及成本便宜,也能兼顧投影成像品質之功效增進,及使各該透鏡群之間配置光圈大,以提升投影成像品質之功效增進。 With the help of the technical means of uncovering, the present invention uses the mutual cooperation of the lens groups to make the lens assembly structure simple and cheap, and can also take into account the effect of improving the quality of projection imaging, and make the arrangement of the lens groups large apertures. The effect of improving the quality of projection imaging is enhanced.

10:第一透鏡群 10: The first lens group

20:第二透鏡群 20: Second lens group

30:第三透鏡群 30: The third lens group

40:第四透鏡群 40: The fourth lens group

50:第五透鏡群 50: Fifth lens group

60:變焦投影系統 60: zoom projection system

L1:第一透鏡 L 1 : the first lens

L2:第二透鏡 L 2 : second lens

L3:第三透鏡 L 3 : third lens

L4:第四透鏡 L 4 : fourth lens

L5:第五透鏡 L 5 : Fifth lens

L6:第六透鏡 L 6 : sixth lens

L7:第七透鏡 L 7 : seventh lens

L8:第八透鏡 L 8 : Eighth lens

L9:第九透鏡 L 9 : Ninth lens

L10:第十透鏡 L 10 : Tenth lens

C1:雙膠合透鏡 C 1 : Double cemented lens

C2:三膠合透鏡 C 2 : Triple cemented lens

S:光圈 S: aperture

M:成像元件 M: imaging element

IMA:成像面 IMA: imaging surface

λ1:第一波長 λ 1 : first wavelength

λ2:第二波長 λ 2 : second wavelength

λ3:第三波長 λ 3 : third wavelength

1R1、1R2、2R1、2R2、3R1、3R2、4R1、5R1、5R2、6R1、7R1、8R1、8R2、9R1、9R2、10R1、10R2:表面 1R 1 , 1R 2 , 2R 1 , 2R 2 , 3R 1 , 3R 2 , 4R 1 , 5R 1 , 5R 2 , 6R 1 , 7R 1 , 8R 1 , 8R 2 , 9R 1 , 9R 2 , 10R 1 , 10R 2 :surface

D1:第一移動距離 D 1 : The first moving distance

D2:第二移動距離 D 2 : The second moving distance

D3:第三移動距離 D 3 : The third moving distance

D4:第四移動距離 D 4 : The fourth moving distance

P:稜鏡 P: 稜鏡

T:穿透式平順圖像裝置 T: Transmissive smooth imaging device

G:蓋板玻璃 G: Cover glass

圖1A係本發明切換成廣角端之透鏡配置示意圖。 FIG. 1A is a schematic diagram of the lens configuration of the present invention switched to the wide-angle end.

圖1B係本發明切換成廣角端之成像面呈現0.0000mm像高之橫向光線扇形圖。 Fig. 1B is a transverse ray fan diagram with an image height of 0.0000mm on the imaging surface switched to the wide-angle end of the present invention.

圖1C係本發明切換成廣角端之成像面呈現1.5610mm像高之橫向光線扇形圖。 Fig. 1C is a transverse ray fan diagram with an image height of 1.5610mm on the imaging surface switched to the wide-angle end of the present invention.

圖1D係本發明切換成廣角端之成像面呈現3.9010mm像高之橫向光線扇形圖。 Fig. 1D is a horizontal ray fan diagram with an image height of 3.9010 mm on the imaging surface switched to the wide-angle end of the present invention.

圖1E係本發明切換成廣角端之成像面呈現5.4620mm像高之橫向光線扇形圖。 Fig. 1E is a horizontal ray fan diagram of the imaging surface of the present invention switched to the wide-angle end showing an image height of 5.4620mm.

圖1F係本發明切換成廣角端之成像面呈現7.8030mm像高之橫向光線扇形圖。 Fig. 1F is a horizontal ray fan diagram with an image height of 7.8030mm on the imaging surface switched to the wide-angle end of the present invention.

圖1G係本發明切換成廣角端之場曲圖。 Fig. 1G is a field curve diagram of the present invention switched to the wide-angle end.

圖1H係本發明切換成廣角端之畸變圖。 Figure 1H is a distortion diagram of the present invention switched to the wide-angle end.

圖2A係本發明切換成望遠端之透鏡配置示意圖。 2A is a schematic diagram of the lens configuration of the present invention switched to the telephoto end.

圖2B係本發明切換成望遠端之成像面呈現0.0000mm像高之橫向光線扇形圖。 Fig. 2B is a transverse ray fan diagram with 0.0000mm image height on the imaging surface of the telephoto end switched to the present invention.

圖2C係本發明切換成望遠端之成像面呈現1.5610mm像高之橫向光線扇形圖。 Fig. 2C is a transverse ray fan-shaped diagram with an image height of 1.5610 mm on the imaging surface of the telephoto end of the present invention switched to.

圖2D係本發明切換成望遠端之成像面呈現3.9010mm像高之橫向光線扇形圖。 Fig. 2D is a transverse ray fan diagram with an image height of 3.9010 mm on the imaging surface of the telephoto end of the present invention switched to.

圖2E係本發明切換成望遠端之成像面呈現5.4620mm像高之橫向光線扇形圖。 Fig. 2E is a transverse ray fan-shaped diagram with an image height of 5.4620 mm on the imaging surface at the telephoto end of the present invention switched to.

圖2F係本發明切換成望遠端之成像面呈現7.8030mm像高之橫向光線扇形圖。 Fig. 2F is a transverse ray fan-shaped diagram with an image height of 7.8030 mm on the imaging surface of the telephoto end of the present invention switched to.

圖2G係本發明切換成望遠端之場曲圖。 Figure 2G is a field curve diagram of the present invention switched to telephoto end.

圖2H係本發明切換成望遠端之畸變圖。 Fig. 2H is a distortion diagram of the present invention switched to the telephoto end.

首先,請參閱圖1A~1H、圖2A~2H所示,本發明一種變焦投影系統60之較佳實施例包含:一第一透鏡群10,具有負屈光力,包括至少一第一透鏡(L1)及一第二透鏡(L2),該第一透鏡(L1)為具有負屈光力之彎月非球面透鏡及該第二透鏡(L2)為具有負屈光力之球面透鏡,在本實施例中,該第一透鏡(L1)之焦距在-25mm~-50mm間,並由塑膠所構成;該第二透鏡(L2)之焦距在-25mm~-50mm間,並由玻璃所構成,且其阿貝數介於50~82間,而該第二透鏡(L2)也可為雙凹球面透鏡,但不限定於此。 First, referring to FIGS. 1A to 1H and FIGS. 2A to 2H, a preferred embodiment of a zoom projection system 60 of the present invention includes: a first lens group 10 with negative refractive power, including at least one first lens (L 1 ) And a second lens (L 2 ). The first lens (L 1 ) is a meniscus aspheric lens with negative refractive power and the second lens (L 2 ) is a spherical lens with negative refractive power. In this embodiment Wherein, the focal length of the first lens (L 1 ) is between -25mm and -50mm and is made of plastic; the focal length of the second lens (L 2 ) is between -25mm and -50mm and is made of glass, And its Abbe number is between 50 and 82, and the second lens (L 2 ) can also be a biconcave spherical lens, but it is not limited to this.

一第二透鏡群20,具有正屈光力,包括至少一第三透鏡(L3),在本實施例中,該第三透鏡(L3)為雙凸透鏡,但不限定於此。 A second lens group 20 has positive refractive power and includes at least one third lens (L 3 ). In this embodiment, the third lens (L 3 ) is a biconvex lens, but it is not limited thereto.

一第三透鏡群30,具有正屈光力,包括至少一雙膠合透鏡(C1),該雙膠合透鏡(C1)具有正屈光力,並由一第四透鏡(L4)及一第五透鏡(L5)所組成,在本實施例中,該雙膠合透鏡(C1)之焦距在25mm~80mm間,且該第四透鏡(L4)為雙凸透鏡、該第五透鏡(L5)為凸凹透鏡,但不限定於此。 A third lens group 30 with positive refractive power, including at least one double cemented lens (C 1 ), the double cemented lens (C 1 ) has positive refractive power, and consists of a fourth lens (L 4 ) and a fifth lens ( L 5 ), in this embodiment, the focal length of the doublet lens (C 1 ) is between 25 mm and 80 mm, and the fourth lens (L 4 ) is a double convex lens, and the fifth lens (L 5 ) is Convex-concave lenses, but not limited to this.

一第四透鏡群40,具有正屈光力,包括至少一三膠合透 鏡(C2)及一第九透鏡(L9),該三膠合透鏡(C2)具有負屈光力,並由一第六透鏡(L6)、一第七透鏡(L7)及一第八透鏡(L8)所組成,該第七透鏡(L7)為雙凹球面透鏡,該第八透鏡(L8)為具有正屈光力之雙凸透鏡,在本實施例中,該三膠合透鏡(C2)之焦距在-20mm~-50mm間;該第六透鏡(L6)為凹凸透鏡;該第七透鏡(L7)之焦距在-5mm~-20mm間,並由玻璃所構成,且其阿貝數介於20~28間;該第八透鏡(L8)之焦距在20mm~50mm間,並由模造玻璃所構成;該第九透鏡(L9)為雙凸透鏡,但不限定於此。 A fourth lens group 40 with positive refractive power, including at least one triplet lens (C 2 ) and a ninth lens (L 9 ). The triplet lens (C 2 ) has negative refractive power and is composed of a sixth lens ( L 6 ), a seventh lens (L 7 ) and an eighth lens (L 8 ), the seventh lens (L 7 ) is a biconcave spherical lens, and the eighth lens (L 8 ) has positive refractive power In this embodiment, the focal length of the triplet lens (C 2 ) is between -20mm and -50mm; the sixth lens (L 6 ) is a meniscus lens; the focal length of the seventh lens (L 7) It is between -5mm and -20mm and is made of glass, and its Abbe number is between 20 and 28; the focal length of the eighth lens (L 8 ) is between 20mm and 50mm and is made of molded glass; The ninth lens (L 9 ) is a biconvex lens, but it is not limited to this.

一第五透鏡群50,具有正屈光力,包括至少一第十透鏡(L10),在本實施例中,該第十透鏡為平凸透鏡,但不限定於此。此外,在本實施例中,更包括一光圈(Stop)(S),係介於1.6~2.0,並位在該第三透鏡群30與該第四透鏡群40之間,但不限定於此。 A fifth lens group 50 has positive refractive power and includes at least one tenth lens (L 10 ). In this embodiment, the tenth lens is a plano-convex lens, but it is not limited thereto. In addition, in this embodiment, it further includes an aperture (Stop) (S), which is between 1.6 and 2.0 and is located between the third lens group 30 and the fourth lens group 40, but it is not limited to this. .

進一步說明,該變焦投影系統60以各該透鏡(L1、L2、L3、L4、L5、L6、L7、L8、L9、L10)歸納於各該透鏡群10、20、30、40、50,而計算出各該透鏡群10、20、30、40、50之阿貝數,在本實施例中,該第一透鏡群10之阿貝數加總總合介於90~140間;該第二透鏡群20之阿貝數介於25~55間;該第三透鏡群30之阿貝數介於50~90間;該第四透鏡群40之阿貝數加總總合介於200~260間;該第五透鏡群50之阿貝數介於10~20間,且各該透鏡群10、20、30、40、50之相互配合,而可應用於變焦,並滿足以下條件:-2.0<f1a/fw<-1.0;7.5>f4/fw>6;1.35<Bf/fw<1.45;其中,f1a為該第一透鏡群10之有效焦距(effective focal length,efl),f4為該第 四透鏡群40之有效焦距,fw為廣角狀態下的焦距,Bf為廣角端的後焦距等效空氣隙,在本實施例中,f1a可為-14.059;fw可為12.562;f4可為89.380;Bf可為14.130,但不限定於此。 To further illustrate, the zoom projection system 60 summarizes the lenses (L 1 , L 2 , L 3 , L 4 , L 5 , L 6 , L 7 , L 8 , L 9 , and L 10 ) into each lens group 10 , 20, 30, 40, 50, and calculate the Abbe number of each lens group 10, 20, 30, 40, 50. In this embodiment, the Abbe number of the first lens group 10 is added to the total Between 90 and 140; the Abbe number of the second lens group 20 is between 25 and 55; the Abbe number of the third lens group 30 is between 50 and 90; the Abbe number of the fourth lens group 40 The sum of the numbers is between 200 and 260; the Abbe number of the fifth lens group 50 is between 10 and 20, and each of the lens groups 10, 20, 30, 40, and 50 cooperate with each other, and can be applied For zooming, and meet the following conditions: -2.0<f1a/fw<-1.0;7.5>f4/fw>6;1.35<Bf/fw<1.45; where f1a is the effective focal length of the first lens group 10. length,efl), f4 is the effective focal length of the fourth lens group 40, fw is the focal length in the wide-angle state, and Bf is the equivalent air gap of the back focal length at the wide-angle end. In this embodiment, f1a can be -14.059; fw can be It is 12.562; f4 can be 89.380; Bf can be 14.130, but it is not limited to this.

承上,在本實施例中,該變焦投影系統60可應用於變焦時,亦可切換廣角端與望遠端,並設定該第一透鏡群10為對焦群,令該第一透鏡群10與該第五透鏡群50不移動,而該第二透鏡群20、該第三透鏡群30及該第四透鏡群40對一成像元件(M)進行遠近變化,當切換成廣角端時,則該第二透鏡群20靠近該成像元件(M)、該第三透鏡群30靠近該成像元件(M)及該第四透鏡群40靠近該成像元件(M),或當切換成望遠端時,則該第二透鏡群20遠離該成像元件(M)、該第三透鏡群30遠離該成像元件(M)及該第四透鏡群40遠離該成像元件(M),但不限定於此。 In conclusion, in this embodiment, the zoom projection system 60 can be used for zooming, and can also switch between the wide-angle end and the telephoto end, and set the first lens group 10 as a focusing group, so that the first lens group 10 and the The fifth lens group 50 does not move, and the second lens group 20, the third lens group 30, and the fourth lens group 40 change the distance of an imaging element (M). When switched to the wide-angle end, the second lens group 20, the third lens group 30, and the fourth lens group 40 change the distance of an imaging element (M). When the second lens group 20 is close to the imaging element (M), the third lens group 30 is close to the imaging element (M), and the fourth lens group 40 is close to the imaging element (M), or when switched to the telephoto end, the The second lens group 20 is away from the imaging element (M), the third lens group 30 is away from the imaging element (M), and the fourth lens group 40 is away from the imaging element (M), but not limited thereto.

此外,該成像元件(M)之成像面(IMA)與該第十透鏡(L10)之間設有一穿透式平順圖像裝置(Transmissive Smooth Picture Actuator)(T),此為一可快速微量旋轉的玻璃平板裝置,藉由影像偏移來合成提高解析度,如此一來,1080P解析度可提升至4K2K解析度;一稜鏡(P),設在該穿透式平順圖像裝置(T)之後方,並在該稜鏡(P)之後方依序排列一蓋板玻璃(Cover Glass)(G),使該變焦投影系統60形成一遠心變焦投影系統,但不限定於此。 In addition, a Transmissive Smooth Picture Actuator (T) is provided between the imaging surface (IMA) of the imaging element (M) and the tenth lens (L 10 ). The rotating glass flat panel device is synthesized by image shifting to increase the resolution. As a result, the resolution of 1080P can be increased to 4K2K resolution; a prism (P) is installed in the transmissive smooth image device (T ), and behind the frame (P), a cover glass (G) is arranged in sequence, so that the zoom projection system 60 forms a telecentric zoom projection system, but it is not limited to this.

配合表一所示,其該第一透鏡(L1)、該第二透鏡(L2)、該第三透鏡(L3)、該第四透鏡(L4)、該第五透鏡(L5)、該第六透鏡(L6)、該第七透鏡(L7)、該第八透鏡(L8)、該第九透鏡(L9)及該第十透鏡(L10)之表面的半徑(Radius)、厚度(Thickness)、折射率(Nd)及阿貝數(Vd)。 As shown in Table 1, the first lens (L 1 ), the second lens (L 2 ), the third lens (L 3 ), the fourth lens (L 4 ), the fifth lens (L 5 ), the radius of the surface of the sixth lens (L 6 ), the seventh lens (L 7 ), the eighth lens (L 8 ), the ninth lens (L 9 ), and the tenth lens (L 10) (Radius), thickness (Thickness), refractive index (Nd) and Abbe number (Vd).

Figure 109103565-A0305-02-0008-1
Figure 109103565-A0305-02-0008-1
Figure 109103565-A0305-02-0009-2
Figure 109103565-A0305-02-0009-2

進一步說明,該1R1、1R2分別為該第一透鏡(L1)之投影側表面、影像源側表面;該2R1、2R2分別為該第二透鏡(L2)之投影側表面、影像源側表面;該3R1、3R2分別為該第三透鏡(L3)之投影側表面、影像源側表面;該4R1為該第四透鏡(L4)之投影側表面;該5R1、5R2分別為該第五透鏡(L4)之投影側表面、影像源側表面;該6R1為該第六透鏡(L6)之投影側表面;該7R1為該第七透鏡(L7)之投影側表面;該8R1、8R2分別為該第八透鏡(L8)之投影側表面、影像源側表面;該9R1、9R2分別為該第九透鏡(L9)之投影側表面、影像源側表面;該10R1、10R2分別為該第十透鏡(L10)之投影側表面、影像源側表面。 To further explain, the 1R 1 and 1R 2 are respectively the projection side surface and the image source side surface of the first lens (L 1 ); the 2R 1 and 2R 2 are respectively the projection side surface of the second lens (L 2 ), The image source side surface; the 3R 1 and 3R 2 are the projection side surface and the image source side surface of the third lens (L 3 ) respectively; the 4R 1 is the projection side surface of the fourth lens (L 4 ); the 5R 1 and 5R 2 are respectively the projection side surface and the image source side surface of the fifth lens (L 4 ); the 6R 1 is the projection side surface of the sixth lens (L 6 ); the 7R 1 is the seventh lens ( L 7 ) the projection side surface; the 8R 1 , 8R 2 are the projection side surface and the image source side surface of the eighth lens (L 8 ), respectively; the 9R 1 , 9R 2 are the ninth lens (L 9 ), respectively The projection side surface and the image source side surface; the 10R 1 and 10R 2 are the projection side surface and the image source side surface of the tenth lens (L 10 ), respectively.

配合表二所示,其非球面透鏡(ASPH)中列出該1R1、1R2分別為該非球面透鏡之投影側表面、影像源側表面,並列出該非球面透鏡 之Conic、4TH、6TH、8TH、10th、12th、14th、16th;配合表三所示,其非球面透鏡(ASPH)中列出該8R1、8R2分別為該非球面透鏡之投影側表面、影像源側表面,並列出該非球面透鏡之Conic、4TH、6TH、8TH、10th、12th、14th、16th。 As shown in Table 2, the aspheric lens (ASPH) lists the 1R 1 and 1R 2 as the projection side surface and the image source side surface of the aspheric lens respectively, and lists the Conic, 4TH, 6TH, 8TH of the aspheric lens , 10th, 12th, 14th, 16th; as shown in Table 3, the aspheric lens (ASPH) lists the 8R 1 and 8R 2 as the projection side surface and image source side surface of the aspheric lens, and lists the aspheric surface Conic, 4TH, 6TH, 8TH, 10th, 12th, 14th, 16th of the lens.

Figure 109103565-A0305-02-0010-3
Figure 109103565-A0305-02-0010-3

Figure 109103565-A0305-02-0010-4
Figure 109103565-A0305-02-0010-4

配合表四所示,其該變焦投影系統60可切換成廣角(Wide)端或望遠(Tele)端,並以該第一透鏡群10與該第二透鏡群20之間具有一第一移動距離(D1);以該第二透鏡群20與該第三透鏡群30之間具有一第二移動距離(D2);以該第三透鏡群30與該第四透鏡群40之間具有一第三移動距離(D3);以該第四透鏡群40與該第五透鏡群50之間具有一第四移動距 離(D4),並配合該變焦投影系統60之投影變倍比為高變焦倍率(zoom ratio)1.25x,因此,該變焦投影系統60在固定的投影距離下,投影畫面可作廣角端與望遠端的調變。 As shown in Table 4, the zoom projection system 60 can be switched to a wide-angle (Wide) end or a telephoto (Tele) end, and there is a first moving distance between the first lens group 10 and the second lens group 20 (D 1 ); There is a second moving distance (D 2 ) between the second lens group 20 and the third lens group 30; There is a distance between the third lens group 30 and the fourth lens group 40 The third moving distance (D 3 ); there is a fourth moving distance (D 4 ) between the fourth lens group 40 and the fifth lens group 50, and the projection zoom ratio of the zoom projection system 60 is high The zoom ratio is 1.25x. Therefore, the zoom projection system 60 can be adjusted between the wide-angle end and the telephoto end under a fixed projection distance.

Figure 109103565-A0305-02-0011-5
Figure 109103565-A0305-02-0011-5

是以,當該變焦投影系統60切換成廣角端,其以一第一波長(λ1)、一第二波長(λ2)及一第三波長(λ3)分別為0.486um、0.588um及0.656um,並分別可模擬出圖1B、圖1C、圖1D、圖1E、圖1F之不同橫向光線扇形圖,而在同一成像面(IMA)分別呈現0.0000mm、1.5610mm、3.9010mm、5.4620mm、7.8030mm之不同像高,且符號ey、py、ex、px分別表示y軸橫向像差、y軸瞳高、x軸橫向像差、x軸瞳高,該y軸橫向像差、該x軸橫向像差,其最大刻度±20.000um,而該y軸瞳高、該x軸瞳高,其為歸一化比例;圖1G之場曲(Field Curvature)圖及圖1H之畸變(Distortion)圖,其最大視場(Maximum Field)為31.764度,或該變焦投影系統60切換成望遠端,其以一第一波長(λ1)、一第二波長(λ2)及一第三波長(λ3)分別為0.486um、0.588um及0.656um,並分別可模擬出圖2B、圖2C、圖2D、圖2E、圖2F之不同橫向光線扇形圖,而在同一成像面(IMA)分別呈現0.0000mm、1.5610mm、3.9010mm、5.4620mm、7.8030mm之不同像高,且符號ey、py、ex、px分別表示y軸橫向像差、y軸瞳高、x軸橫向像差、x軸瞳高,該y軸橫向像差、該x軸橫向像差,其最大刻度±20.000um, 而該y軸瞳高、該x軸瞳高,其為歸一化比例;圖2G之場曲(Field Curvature)圖及圖2H之畸變(Distortion)圖,其最大視場(Maximum Field)為26.317度,藉由上述模擬曲線及數據,亦證明該變焦投影系統60能以透鏡組合架構簡單及成本便宜進行投影,仍維持良好投影成像品質。 Therefore, when the zoom projection system 60 is switched to the wide-angle end, a first wavelength (λ 1 ), a second wavelength (λ 2 ), and a third wavelength (λ 3 ) are respectively 0.486um, 0.588um and 0.656um, and can simulate the different lateral light sector graphs of Figure 1B, Figure 1C, Figure 1D, Figure 1E, Figure 1F, and respectively present 0.0000mm, 1.5610mm, 3.9010mm, 5.4620mm on the same imaging surface (IMA) , 7.8030mm different image heights, and the symbols ey, py, ex, px represent the y-axis lateral aberration, y-axis pupil height, x-axis lateral aberration, x-axis pupil height, the y-axis lateral aberration, the x The axial lateral aberration, the maximum scale is ±20.000um, and the y-axis pupil height and the x-axis pupil height are normalized ratios; the Field Curvature diagram of Fig. 1G and the distortion (Distortion) of Fig. 1H Figure, the maximum field of view (Maximum Field) is 31.764 degrees, or the zoom projection system 60 is switched to the telephoto end, which uses a first wavelength (λ 1 ), a second wavelength (λ 2 ), and a third wavelength ( λ 3 ) are 0.486um, 0.588um, and 0.656um, respectively, and can simulate the different lateral ray fan patterns of Figure 2B, Figure 2C, Figure 2D, Figure 2E, and Figure 2F, respectively, and present them on the same imaging plane (IMA) Different image heights of 0.0000mm, 1.5610mm, 3.9010mm, 5.4620mm, 7.8030mm, and the symbols ey, py, ex, px represent the y-axis lateral aberration, the y-axis pupil height, the x-axis lateral aberration, and the x-axis pupil respectively. The maximum scale of the y-axis lateral aberration and the x-axis lateral aberration is ±20.000um, and the y-axis pupil height and the x-axis pupil height are normalized ratios; Fig. 2G field curvature (Field The Curvature diagram and the Distortion diagram in Figure 2H, the maximum field of view (Maximum Field) is 26.317 degrees. Based on the above simulation curves and data, it is also proved that the zoom projection system 60 can be implemented with a simple lens assembly structure and low cost. Projection, still maintain good projection image quality.

綜上所述,本發明所揭示之技術手段,確具「新穎性」、「進步性」及「可供產業利用」等發明專利要件,祈請 鈞局惠賜專利,以勵創作,無任德感。 In summary, the technical means disclosed in the present invention do have the requirements of invention patents such as "novelty", "progressiveness" and "available for industrial use". I hope that the Jun Bureau will grant patents to encourage creation without any responsibility. Sense of virtue.

惟,上述所揭露之圖式、說明,僅為本發明之較佳實施例,大凡熟悉此項技藝人士,依本案精神範疇所作之修飾或等效變化,仍應包括在本案申請專利範圍內。 However, the drawings and descriptions disclosed above are only preferred embodiments of the present invention. Anyone who is familiar with the art and makes modifications or equivalent changes based on the spirit of the case should still be included in the scope of the patent application in this case.

10:第一透鏡群 10: The first lens group

20:第二透鏡群 20: Second lens group

30:第三透鏡群 30: The third lens group

40:第四透鏡群 40: The fourth lens group

50:第五透鏡群 50: Fifth lens group

60:變焦投影系統 60: zoom projection system

L1:第一透鏡 L 1 : the first lens

L2:第二透鏡 L 2 : second lens

L3:第三透鏡 L 3 : third lens

L4:第四透鏡 L 4 : fourth lens

L5:第五透鏡 L 5 : Fifth lens

L6:第六透鏡 L 6 : sixth lens

L7:第七透鏡 L 7 : seventh lens

L8:第八透鏡 L 8 : Eighth lens

L9:第九透鏡 L 9 : Ninth lens

L10:第十透鏡 L 10 : Tenth lens

C1:雙膠合透鏡 C 1 : Double cemented lens

C2:三膠合透鏡 C 2 : Triple cemented lens

S:光圈 S: aperture

M:成像元件 M: imaging element

IMA:成像面 IMA: imaging surface

1R1、1R2、2R1、2R2、3R1、3R2、4R1、5R1、5R2、6R1、7R1、8R1、8R2、9R1、9R2、10R1、10R2:表面 1R 1 , 1R 2 , 2R 1 , 2R 2 , 3R 1 , 3R 2 , 4R 1 , 5R 1 , 5R 2 , 6R 1 , 7R 1 , 8R 1 , 8R 2 , 9R 1 , 9R 2 , 10R 1 , 10R 2 :surface

D1:第一移動距離 D 1 : The first moving distance

D2:第二移動距離 D 2 : The second moving distance

D3:第三移動距離 D 3 : The third moving distance

D4:第四移動距離 D 4 : The fourth moving distance

P:稜鏡 P: 稜鏡

T:穿透式平順圖像裝置 T: Transmissive smooth imaging device

G:玻璃蓋板 G: Glass cover

Claims (9)

一種變焦投影系統,包含:一第一透鏡群,具有負屈光力,包括至少一第一透鏡及一第二透鏡,該第一透鏡為具有負屈光力之彎月非球面透鏡及該第二透鏡為具有負屈光力之球面透鏡;一第二透鏡群,具有正屈光力,包括至少一第三透鏡;一第三透鏡群,具有正屈光力,包括至少一雙膠合透鏡,該雙膠合透鏡具有正屈光力,並由一第四透鏡及一第五透鏡所組成;一第四透鏡群,具有正屈光力,包括至少一三膠合透鏡及一第九透鏡,該三膠合透鏡具有負屈光力,並由一第六透鏡、一第七透鏡及一第八透鏡所組成,該第七透鏡為雙凹球面透鏡,該第八透鏡為具有正屈光力之雙凸透鏡;以及一第五透鏡群,具有正屈光力,包括至少一第十透鏡,且該變焦投影系統滿足以下條件:-2.0<f1a/fw<-1.0;7.5>f4/fw>6;1.35<Bf/fw<1.45;其中,f1a為該第一透鏡群之有效焦距,f4為該第四透鏡群之有效焦距,fw為廣角狀態下的焦距,Bf為廣角端的後焦距等效空氣隙。 A zoom projection system includes: a first lens group with negative refractive power, including at least one first lens and a second lens, the first lens is a meniscus aspheric lens with negative refractive power and the second lens has A spherical lens with negative refractive power; a second lens group with positive refractive power, including at least one third lens; a third lens group with positive refractive power, including at least one double cemented lens, the double cemented lens having positive refractive power and composed of A fourth lens and a fifth lens; a fourth lens group with positive refractive power, including at least a triplet lens and a ninth lens, the triplet lens has negative refractive power, and consists of a sixth lens, a The seventh lens is composed of a seventh lens and an eighth lens, the seventh lens is a biconcave spherical lens, the eighth lens is a biconvex lens with positive refractive power; and a fifth lens group with positive refractive power includes at least one tenth lens , And the zoom projection system meets the following conditions: -2.0<f1a/fw<-1.0; 7.5>f4/fw>6; 1.35<Bf/fw<1.45; where f1a is the effective focal length of the first lens group, f4 Is the effective focal length of the fourth lens group, fw is the focal length in the wide-angle state, and Bf is the equivalent air gap of the back focal length at the wide-angle end. 如請求項1所述之變焦投影系統,其中,該第一透鏡之焦距在-25mm~-50mm間;該第二透鏡之焦距在-25mm~-50mm間;該雙膠合透鏡之焦距在25mm~80mm間;該三膠合透鏡之焦距在-20mm~-50mm間;該第七透鏡之焦距在-5mm~-20mm間;該第八透鏡之焦距在20mm~50mm間。 The zoom projection system of claim 1, wherein the focal length of the first lens is between -25mm~-50mm; the focal length of the second lens is between -25mm~-50mm; the focal length of the doublet lens is between 25mm~ Between 80mm; the focal length of the triple cemented lens is between -20mm~-50mm; the focal length of the seventh lens is between -5mm~-20mm; the focal length of the eighth lens is between 20mm~50mm. 如請求項1所述之變焦投影系統,其中,該第二透鏡之阿貝數介於50~82間。 The zoom projection system according to claim 1, wherein the Abbe number of the second lens is between 50 and 82. 如請求項1所述之變焦投影系統,其中,該第七透鏡之阿貝數介於20~28間。 The zoom projection system according to claim 1, wherein the Abbe number of the seventh lens is between 20-28. 如請求項1所述之變焦投影系統,其中,該第一透鏡為塑膠所構成;該第二透鏡為玻璃所構成;該雙膠合透鏡為玻璃所構成;該第七透鏡為玻璃所構成;該第八透鏡為模造玻璃所構成。 The zoom projection system according to claim 1, wherein the first lens is made of plastic; the second lens is made of glass; the doublet lens is made of glass; the seventh lens is made of glass; the The eighth lens is composed of molded glass. 如請求項1所述之變焦投影系統,其中,該第一透鏡群之阿貝數加總總合介於90~140間;該第二透鏡群之阿貝數介於25~55間;該第三透鏡群之阿貝數加總總合介於50~90間;該第四透鏡群之阿貝數加總總合介於200~260間;該第五透鏡群之阿貝數介於10~20間。 The zoom projection system according to claim 1, wherein the sum of the Abbe numbers of the first lens group is between 90 and 140; the Abbe numbers of the second lens group are between 25 and 55; the The sum total of the Abbe number of the third lens group is between 50 and 90; the sum total of the Abbe number of the fourth lens group is between 200 and 260; the Abbe number of the fifth lens group is between 10-20 rooms. 如請求項1所述之變焦投影系統,其中,該變焦投影系統可切換廣角端與望遠端,並設定該第一透鏡群為對焦群,令該第一透鏡群與該第五透鏡群不移動,而該第二透鏡群、該第三透鏡群及該第四透鏡群對一成像元件進行遠近變化,當切換成廣角端時,則該第二透鏡群靠近該成像元件、該第三透鏡群靠近該成像元件及該第四透鏡群靠近該成像元件,或當切換成望遠端時,則該第二透鏡群遠離該成像元件、該第三透鏡群遠離該成像元件及該第四透鏡群遠離該成像元件。 The zoom projection system according to claim 1, wherein the zoom projection system can switch the wide-angle end and the telephoto end, and set the first lens group as a focusing group so that the first lens group and the fifth lens group do not move , And the second lens group, the third lens group, and the fourth lens group change the distance of an imaging element. When switched to the wide-angle end, the second lens group is close to the imaging element and the third lens group. Close to the imaging element and the fourth lens group are close to the imaging element, or when switched to the telephoto end, the second lens group is away from the imaging element, the third lens group is away from the imaging element, and the fourth lens group is away The imaging element. 如請求項1所述之變焦投影系統,其中,該變焦投影系統之投影變倍比為高變焦倍率1.25x。 The zoom projection system according to claim 1, wherein the projection zoom ratio of the zoom projection system is a high zoom magnification of 1.25x. 如請求項1所述之變焦投影系統,更包括一光圈,係介於1.6~2.0,並位在該第三透鏡群與該第四透鏡群之間。 The zoom projection system as described in claim 1, further comprising an aperture, which is between 1.6 and 2.0, and is located between the third lens group and the fourth lens group.
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Publication number Priority date Publication date Assignee Title
TWI786713B (en) * 2021-07-07 2022-12-11 大陸商信泰光學(深圳)有限公司 Projection lens assembly

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CN101806953A (en) * 2009-02-16 2010-08-18 精工爱普生株式会社 Projection zoom lens and projection type image display device
TW201743102A (en) * 2016-06-08 2017-12-16 揚明光學股份有限公司 An optical system and an optical lens thereof
TWM586805U (en) * 2019-05-29 2019-11-21 中強光電股份有限公司 Zoom projection lens

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Publication number Priority date Publication date Assignee Title
CN101806953A (en) * 2009-02-16 2010-08-18 精工爱普生株式会社 Projection zoom lens and projection type image display device
TW201743102A (en) * 2016-06-08 2017-12-16 揚明光學股份有限公司 An optical system and an optical lens thereof
TWM586805U (en) * 2019-05-29 2019-11-21 中強光電股份有限公司 Zoom projection lens

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI786713B (en) * 2021-07-07 2022-12-11 大陸商信泰光學(深圳)有限公司 Projection lens assembly

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