JP2010039261A - Wide-angle lens - Google Patents
Wide-angle lens Download PDFInfo
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- JP2010039261A JP2010039261A JP2008202872A JP2008202872A JP2010039261A JP 2010039261 A JP2010039261 A JP 2010039261A JP 2008202872 A JP2008202872 A JP 2008202872A JP 2008202872 A JP2008202872 A JP 2008202872A JP 2010039261 A JP2010039261 A JP 2010039261A
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本発明は小型で光学性能が良好で低コストの広角レンズに関し、固体撮像素子を用いた監視カメラ用や車載カメラ用等のデジタル入力機器（デジタルスチルカメラ、デジタルビデオカメラ等）に好適な広角レンズに関する。 The present invention relates to a small-sized wide-angle lens having good optical performance and low cost, and suitable for a digital input device (such as a digital still camera or a digital video camera) for a surveillance camera or a vehicle-mounted camera using a solid-state imaging device. About.
固体撮像素子を用いた監視カメラや車載カメラ等に搭載される広角レンズは、従来から数多く提案されてきている。車載カメラにおいては、例えば３枚構成若しくは４枚構成で小型化された広角レンズが提案されている（特許文献１，２参照）。
広角レンズにおいて、小型化のために枚数を削減すると色収差による性能の悪化が問題になる。例えば、特許文献１の如き３枚構成のレンズでは、倍率色収差による性能悪化が問題となり、倍率色収差を考慮した特許文献２の如き４枚構成のレンズでは軸上色収差による性能悪化が問題となる。 In a wide-angle lens, if the number is reduced for miniaturization, deterioration of performance due to chromatic aberration becomes a problem. For example, a lens having a three-lens configuration as in Patent Document 1 has a problem of performance deterioration due to lateral chromatic aberration, and a lens having a four-lens configuration as in Patent Document 2 in which lateral chromatic aberration is taken into account has a problem of performance deterioration due to longitudinal chromatic aberration.
本発明はかかる問題に鑑みてなされたものであり、小型で光学性能が良好で低コストの広角レンズを提案することを発明の目的とする。 The present invention has been made in view of such a problem, and an object of the present invention is to propose a small-angle wide-angle lens having good optical performance and low cost.
前記目的は、下記に記載した発明により達成される。 The object is achieved by the invention described below.
１．物体側から順に、負のパワーを有してガラスから成り球面に形成された第１レンズと、正のパワーを有して少なくとも一方の面が非球面に形成された第２レンズと、絞りと、正のパワーを有して少なくとも一方の面が非球面に形成された第３レンズとから構成され、該第３レンズの像面側に回折面を設けたことを特徴とする広角レンズ。 1. In order from the object side, a first lens having a negative power and made of glass and formed into a spherical surface, a second lens having a positive power and at least one surface formed into an aspherical surface, and a diaphragm A wide-angle lens having a positive power and a third lens having at least one surface formed as an aspheric surface, and a diffractive surface provided on the image surface side of the third lens.
２．以下の条件式を満足することを特徴とする前記１に記載の広角レンズ
０．０１＜ΦＤ×ｆ＜０．１３・・・（１）
但し、
ΦＤ：回折面のパワー
ｆ：全系の焦点距離
３．以下の条件式を満足することを特徴とする前記１又は前記２に記載の広角レンズ。
2. The wide-angle lens according to 1 above, wherein the following conditional expression is satisfied: 0.01 <ΦD × f <0.13 (1)
However,
ΦD: power of diffractive surface f: focal length of entire system 3. The wide-angle lens according to 1 or 2 above, wherein the following conditional expression is satisfied.
ωＸ＞１２０°・・・（２）
但し、
ωＸ：撮像画面の長手方向の画角
ωX> 120 ° (2)
However,
ωX: Angle of view in the longitudinal direction of the imaging screen
本発明の広角レンズによれば、レンズ３枚構成で固体撮像素子用撮像レンズ系として色収差の小さい良好な光学性能と広い全画角を有し、更に低コスト且つコンパクトになる。 According to the wide-angle lens of the present invention, the three-lens configuration has an excellent optical performance with a small chromatic aberration and a wide total angle of view as an imaging lens system for a solid-state imaging device, and is further low-cost and compact.
以下に図を参照して本発明の好適な実施の形態について説明する。 Preferred embodiments of the present invention will be described below with reference to the drawings.
なお、本明細書において「パワー」とは、焦点距離の逆数で定義される量を表す。 In this specification, “power” represents an amount defined by the reciprocal of the focal length.
図１乃至図４は、本発明に係る広角レンズの４種の実施形態である第１実施形態乃至第４実施形態のレンズ配置を表す断面図である。 FIGS. 1 to 4 are sectional views showing lens arrangements of first to fourth embodiments, which are four types of embodiments of the wide-angle lens according to the present invention.
図１乃至図４において、各々の広角レンズは、物体側から順に負のパワーを有する第１レンズＬ１と、正のパワーを有する第２レンズＬ２と、開口絞りＳと、正のパワーを有する第３レンズＬ３と、ガラスフィルタＧＦから構成されている。 1 to 4, each wide-angle lens has a first lens L1 having a negative power, a second lens L2 having a positive power, an aperture stop S, and a first lens having a positive power in order from the object side. It consists of three lenses L3 and a glass filter GF.
更に詳しくは、第１レンズＬ１は両面が球面に形成されると共にガラスから成り、第２レンズＬ２と第３レンズＬ３はそれぞれ少なくとも一方の面が非球面に形成されると共にプラスチックから成り、更に第３レンズＬ３の像面側に回折面が設けられている。 More specifically, the first lens L1 is formed of glass with both surfaces formed spherical and the second lens L2 and the third lens L3 are formed of plastic with at least one surface formed of aspheric surfaces. A diffractive surface is provided on the image plane side of the three lenses L3.
このように構成にすることにより良好な性能を得ることができる。 With this configuration, good performance can be obtained.
更に、第１レンズＬ１をガラス球面レンズにすることにより、例えば車載レンズ等に使用する場合に、別に保護カバーなどを設ける必要がなくなる。 Furthermore, when the first lens L1 is made of a glass spherical lens, for example, when used for an in-vehicle lens or the like, it is not necessary to provide a protective cover or the like.
更に、第２レンズＬ１、第３レンズＬ３を少なくとも一方の面が非球面に形成されたプラスチックレンズにすることにより、球面で構成するよりも枚数が削減でき、コストダウンになると共に、サイズも小さくできる。 Further, by making the second lens L1 and the third lens L3 plastic lenses in which at least one surface is formed as an aspherical surface, the number of lenses can be reduced as compared with the case where the second lens L1 and the third lens L3 are aspherical. it can.
更に、絞りよりも後の第３レンズＬ３に回折面を設けることにより、軸上色収差及び倍率色収差を抑えることが可能となる。また、軸上と軸外の光線の通る高さの差が大きい後面に回折面を設けることにより、倍率色収差を効果的に抑えることができる。 Furthermore, it is possible to suppress axial chromatic aberration and lateral chromatic aberration by providing a diffraction surface on the third lens L3 after the stop. Further, the chromatic aberration of magnification can be effectively suppressed by providing a diffractive surface on the rear surface where the difference in height between the on-axis and off-axis light beams is large.
次に、各実施形態の広角レンズ系が満足すべき条件式範囲を説明する。 Next, the conditional expression range that the wide-angle lens system of each embodiment should satisfy will be described.
条件式（１）の下限値を下回ると色収差の補正が不足し、光学性能の低下を招く。条件式（１）の上限値を上回ると、色収差の補正が過剰となり同様に光学性能の低下を招く。 If the lower limit of conditional expression (1) is not reached, correction of chromatic aberration will be insufficient, leading to a decrease in optical performance. If the upper limit of conditional expression (1) is exceeded, the correction of chromatic aberration will be excessive, and the optical performance will be similarly reduced.
また、上記条件式（２）は、画角に関する式であり、条件式（２）を下回ると倍率色収差があまり大きくならないため、回折面を設ける必要がなくなる。 The conditional expression (2) is an expression related to the angle of view. If the conditional expression (2) is less than the conditional expression (2), the chromatic aberration of magnification does not increase so much, and it is not necessary to provide a diffractive surface.
以下に挙げる実施例１乃至実施例４は、前述した第１実施形態乃至第４実施形態にそれぞれ対応している。各実施例に使用する記号は下記の通りである。 Examples 1 to 4 described below correspond to the first to fourth embodiments described above, respectively. Symbols used in each example are as follows.
ｆ：撮像レンズ全系の焦点距離
ＦＮｏ：Ｆナンバー
Ｒ：曲率半径
Ｄ：軸上面間隔
ｎｄ：レンズ材料のｄ線に対する屈折率
νｄ：レンズ材料のアッベ数
また、非球面（ＡＳＰ）と記した面において、非球面の面形状を以下の式で表す。
f: Focal length of the entire imaging lens system FNo: F number R: Radius of curvature D: Distance between upper surfaces of axis nd: Refractive index of lens material with respect to d-line νd: Abbe number of lens material The surface shape of the aspherical surface is represented by the following formula.
Ｘ（Ｈ）＝Ｃ・Ｈ２／｛１＋（１−ε・Ｃ２・Ｈ２）１／２｝＋ΣＡｉ・Ｈｉ
但し、
Ｘ（Ｈ）：高さＨの位置での光軸方向の変位量（面頂点基準）、
Ｃ：近軸曲率、
Ｈ：光軸に対して垂直な方向の高さ、
ε：２次曲面パラメータ、
Ａｉ：ｉ次の非球面係数、
Ｈｉ：Ｈのｉ乗を表す記号、
また、回折面（ＤＯＥ）と記した面において、回折光学素子のピッチを決める位相形状を以下の式で表す。
X (H) = C · H 2 / {1+ (1-ε · C 2 · H 2 ) 1/2 } + ΣAi · Hi
However,
X (H): Amount of displacement in the optical axis direction at the position of height H (based on the surface vertex),
C: Paraxial curvature,
H: height in the direction perpendicular to the optical axis,
ε: quadric surface parameter,
Ai: i-th order aspheric coefficient,
Hi: a symbol representing H to the power of i,
In addition, the phase shape that determines the pitch of the diffractive optical element on the surface described as the diffractive surface (DOE) is expressed by the following equation.
φ（Ｈ）＝（２π／λ０）・（Ｃ１・Ｈ２＋Ｃ２・Ｈ４＋Ｃ３・Ｈ６＋・・・）
但し、
Ｈ：光軸に対して垂直な方向の高さ、
λ０：設計波長、
Ｃ１：２次の位相係数、
Ｃ２：４次の位相係数、
Ｃ３：６次の位相係数、
上式による設計波長、設計次数における回折光学素子面の光学パワーΦＤは以下の式のようになる。
φ (H) = (2π / λ0) · (C1 · H 2 + C2 · H 4 + C3 · H 6 +...)
However,
H: height in the direction perpendicular to the optical axis,
λ0: design wavelength,
C1: secondary phase coefficient,
C2: fourth-order phase coefficient,
C3: 6th order phase coefficient,
The optical power ΦD of the diffractive optical element surface at the design wavelength and the design order according to the above formula is expressed by the following formula.
ΦＤ＝−２・Ｃ１
次に、各実施例の光学諸値及び条件式の値を示す。
（実施例１）
ｆ＝１．１９７ｍｍ
ＦＮｏ＝２．８
面データを以下に示す。
ΦD = -2 · C1
Next, optical values and conditional expression values of each example are shown.
Example 1
f = 1.197mm
FNo = 2.8
The surface data is shown below.
面番号 Ｒ(mm) Ｄ(mm) ｎｄ νｄ
１ -2323.131 1.000 1.72916 56.51
２ 3.418 2.367
３(ASP) -16.119 2.831 1.58340 30.23
４(ASP) -6.578 1.323
５ ∞ 0.429
６(ASP) 3.596 2.877 1.52510 56.34
７(ASP)(DOE) -1.739 1.372
８ ∞ 0.300 1.51680 65.26
９ ∞ 0.500
10 ∞
非球面係数を以下に示す。
第３面
K=0,A4=2.11637E-02,A6=-2.14808E-03,A8=1.56930E-04,A10=4.01855E-07
第４面
K=0,A4=3.41294E-02,A6=-1.46337E-02,A8=4.29848E-03,A10=-4.39845E-04
第６面
K=0,A4=-2.01561E-02,A6=5.60206E-02,A8=-5.27018E-02,A10=1.28964E-02
第７面
K=0,A4=4.54500E-02,A6=2.75192E-02,A8=-1.26964E-02,A10=3.45169E-03
回折面係数を以下に示す。
第７面
C1=-2.6608E-02,C2=0.0000E+00,C3=0.0000E+00,C4=0.0000E+00
各条件式に対応する値を以下に示す。
Surface number R (mm) D (mm) nd νd
1 -2323.131 1.000 1.72916 56.51
2 3.418 2.367
3 (ASP) -16.119 2.831 1.58340 30.23
4 (ASP) -6.578 1.323
5 ∞ 0.429
6 (ASP) 3.596 2.877 1.52510 56.34
7 (ASP) (DOE) -1.739 1.372
8 ∞ 0.300 1.51680 65.26
9 ∞ 0.500
10 ∞
The aspheric coefficient is shown below.
Third side
K = 0, A4 = 2.11637E-02, A6 = -2.14808E-03, A8 = 1.56930E-04, A10 = 4.01855E-07
4th page
K = 0, A4 = 3.41294E-02, A6 = -1.46337E-02, A8 = 4.29848E-03, A10 = -4.39845E-04
6th page
K = 0, A4 = -2.01561E-02, A6 = 5.60206E-02, A8 = -5.27018E-02, A10 = 1.28964E-02
7th page
K = 0, A4 = 4.54500E-02, A6 = 2.75192E-02, A8 = -1.26964E-02, A10 = 3.45169E-03
The diffraction surface coefficient is shown below.
7th page
C1 = -2.6608E-02, C2 = 0.0000E + 00, C3 = 0.0000E + 00, C4 = 0.0000E + 00
The values corresponding to each conditional expression are shown below.
条件式（１）＝１３２
条件式（２）＝０．０６４
収差図を図５に示す。
（実施例２）
ｆ＝１．４５１ｍｍ
ＦＮｏ＝２．８
面データを以下に示す。
Conditional expression (1) = 132
Conditional expression (2) = 0.064
An aberration diagram is shown in FIG.
(Example 2)
f = 1.451mm
FNo = 2.8
The surface data is shown below.
面番号 Ｒ(mm) Ｄ(mm) ｎｄ νｄ
１ -65.373 1.000 1.72916 56.51
２ 4.438 3.841
３(ASP) -109.727 2.139 1.58340 30.23
４(ASP) -3.981 1.456
５ ∞ 1.043
６(ASP) 9.963 1.196 1.52510 56.34
７(ASP)(DOE) -1.666 1.542
８ ∞ 0.300 1.51680 65.26
９ ∞ 0.500
10 ∞
非球面係数を以下に示す。
第３面
K=0,A4=1.39775E-02,A6=-1.20665E-03,A8=7.78826E-05,A10=4.55173E-06
第４面
K=0,A4=3.04704E-02,A6=-7.66894E-03,A8=1.54687E-03,A10=-1.02740E-04
第６面
K=0,A4=1.55963E-02,A6=-3.51458E-02,A8=2.38576E-02,A10=-5.55887E-03
第７面
K=0,A4=5.64411E-02,A6=7.33400E-03,A8=-7.34139E-03,A10=3.86631E-03
回折面係数を以下に示す。
第７面
C1=-5.0000E-03,C2=0.0000E+00,C3=0.0000E+00,C4=0.0000E+00
各条件式に対応する値を以下に示す。
Surface number R (mm) D (mm) nd νd
1 -65.373 1.000 1.72916 56.51
2 4.438 3.841
3 (ASP) -109.727 2.139 1.58340 30.23
4 (ASP) -3.981 1.456
5 ∞ 1.043
6 (ASP) 9.963 1.196 1.52510 56.34
7 (ASP) (DOE) -1.666 1.542
8 ∞ 0.300 1.51680 65.26
9 ∞ 0.500
10 ∞
The aspheric coefficient is shown below.
Third side
K = 0, A4 = 1.39775E-02, A6 = -1.20665E-03, A8 = 7.78826E-05, A10 = 4.55173E-06
4th page
K = 0, A4 = 3.04704E-02, A6 = -7.66894E-03, A8 = 1.54687E-03, A10 = -1.02740E-04
6th page
K = 0, A4 = 1.55963E-02, A6 = -3.51458E-02, A8 = 2.38576E-02, A10 = -5.55887E-03
7th page
K = 0, A4 = 5.64411E-02, A6 = 7.33400E-03, A8 = -7.34139E-03, A10 = 3.86631E-03
The diffraction surface coefficient is shown below.
7th page
C1 = -5.0000E-03, C2 = 0.0000E + 00, C3 = 0.0000E + 00, C4 = 0.0000E + 00
The values corresponding to each conditional expression are shown below.
条件式（１）＝１０８
条件式（２）＝０．０１５
収差図を図６に示す。
（実施例３）
ｆ＝１．３６３ｍｍ
ＦＮｏ＝２．８
面データを以下に示す。
Conditional expression (1) = 108
Conditional expression (2) = 0.015
An aberration diagram is shown in FIG.
(Example 3)
f = 1.363mm
FNo = 2.8
The surface data is shown below.
面番号 Ｒ(mm) Ｄ(mm) ｎｄ νｄ
１ -47.452 1.000 1.72916 56.51
２ 8.949 2.227
３(ASP) -6.015 3.192 1.58340 30.23
４(ASP) -5.751 1.457
５ ∞ 0.579
６(ASP) 3.132 2.617 1.52510 56.34
７(ASP)(DOE) -1.847 1.123
８ ∞ 0.300 1.51680 65.26
９ ∞ 0.500
10 ∞
非球面係数を以下に示す。
第３面
K=0,A4=1.49571E-02,A6=-1.11738E-03,A8=5.97506E-05,A10=-1.12055E-06
第４面
K=0,A4=3.17607E-02,A6=-8.32290E-03,A8=1.57271E-03,A10=-1.06037E-04
第６面
K=0,A4=-1.89625E-02,A6=2.57928E-02,A8=-1.63602E-02,A10=4.00582E-03
第７面
K=0,A4=4.44233E-02,A6=2.08329E-02,A8=-7.05473E-03,A10=1.73929E-03
回折面係数を以下に示す。
第７面
C1=-4.0000E-02,C2=0.0000E+00,C3=0.0000E+00,C4=0.0000E+00
各条件式に対応する値を以下に示す。
Surface number R (mm) D (mm) nd νd
1 -47.452 1.000 1.72916 56.51
2 8.949 2.227
3 (ASP) -6.015 3.192 1.58340 30.23
4 (ASP) -5.751 1.457
5 ∞ 0.579
6 (ASP) 3.132 2.617 1.52510 56.34
7 (ASP) (DOE) -1.847 1.123
8 ∞ 0.300 1.51680 65.26
9 ∞ 0.500
10 ∞
The aspheric coefficient is shown below.
Third side
K = 0, A4 = 1.49571E-02, A6 = -1.11738E-03, A8 = 5.97506E-05, A10 = -1.12055E-06
4th page
K = 0, A4 = 3.17607E-02, A6 = -8.32290E-03, A8 = 1.57271E-03, A10 = -1.06037E-04
6th page
K = 0, A4 = -1.89625E-02, A6 = 2.57928E-02, A8 = -1.63602E-02, A10 = 4.00582E-03
7th page
K = 0, A4 = 4.44233E-02, A6 = 2.08329E-02, A8 = -7.05473E-03, A10 = 1.73929E-03
The diffraction surface coefficient is shown below.
7th page
C1 = -4.0000E-02, C2 = 0.0000E + 00, C3 = 0.0000E + 00, C4 = 0.0000E + 00
The values corresponding to each conditional expression are shown below.
条件式（１）＝９５
条件式（２）＝０．１０９
収差図を図７に示す。
（実施例４）
ｆ＝１．１３７ｍｍ
ＦＮｏ＝２．８
面データを以下に示す。
Conditional expression (1) = 95
Conditional expression (2) = 0.109
The aberration diagram is shown in FIG.
Example 4
f = 1.137mm
FNo = 2.8
The surface data is shown below.
面番号 Ｒ(mm) Ｄ(mm) ｎｄ νｄ
１ -183.926 1.000 1.72916 56.51
２ 3.885 2.561
３(ASP) -8.899 2.588 1.58340 30.23
４(ASP) -4.118 1.426
５ ∞ 0.903
６(ASP) 3.038 2.082 1.52510 56.34
７(ASP)(DOE) -1.738 1.053
８ ∞ 0.300 1.51680 65.26
９ ∞ 0.500
10 ∞
非球面係数を以下に示す。
第３面
K=0,A4=2.03630E-02,A6=-2.05263E-03,A8=1.19170E-04,A10=2.72771E-07
第４面
K=0,A4=3.07609E-02,A6=-8.04900E-03,A8=1.38387E-03,A10=-7.98059E-05
第６面
K=0,A4=-1.09806E-02,A6=6.24569E-03,A8=8.48768E-04,A10=-5.01167E-04
第７面
K=0,A4=5.10710E-02,A6=5.20811E-02,A8=-2.93158E-02,A10=7.00185E-03
回折面係数を以下に示す。
第７面
C1=-2.6220E-02,C2=0.0000E+00,C3=0.0000E+00,C4=0.0000E+00
各条件式に対応する値を以下に示す。
Surface number R (mm) D (mm) nd νd
1-183.926 1.000 1.72916 56.51
2 3.885 2.561
3 (ASP) -8.899 2.588 1.58340 30.23
4 (ASP) -4.118 1.426
5 ∞ 0.903
6 (ASP) 3.038 2.082 1.52510 56.34
7 (ASP) (DOE) -1.738 1.053
8 ∞ 0.300 1.51680 65.26
9 ∞ 0.500
10 ∞
The aspheric coefficient is shown below.
Third side
K = 0, A4 = 2.03630E-02, A6 = -2.05263E-03, A8 = 1.19170E-04, A10 = 2.72771E-07
4th page
K = 0, A4 = 3.07609E-02, A6 = -8.04900E-03, A8 = 1.38387E-03, A10 = -7.98059E-05
6th page
K = 0, A4 = -1.09806E-02, A6 = 6.24569E-03, A8 = 8.48768E-04, A10 = -5.01167E-04
7th page
K = 0, A4 = 5.10710E-02, A6 = 5.20811E-02, A8 = -2.93158E-02, A10 = 7.00185E-03
The diffraction surface coefficient is shown below.
7th page
C1 = -2.6220E-02, C2 = 0.0000E + 00, C3 = 0.0000E + 00, C4 = 0.0000E + 00
The values corresponding to each conditional expression are shown below.
条件式（１）＝１１８
条件式（２）＝０．０６０
収差図を図８に示す。
Conditional expression (1) = 118
Conditional expression (2) = 0.060
The aberration diagram is shown in FIG.
Ｌ１ 第１レンズ
Ｌ２ 第２レンズ
Ｌ３ 第３レンズ
Ｓ 開口絞り
ＧＦ ガラスフィルタ
L1 1st lens L2 2nd lens L3 3rd lens S Aperture stop GF Glass filter
Claims (3)
０．０１＜ΦＤ×ｆ＜０．１３
但し、
ΦＤ：回折面のパワー
ｆ：全系の焦点距離 The wide-angle lens according to claim 1, wherein the following conditional expression is satisfied: 0.01 <ΦD × f <0.13
However,
ΦD: power of diffraction surface f: focal length of entire system
ωＸ＞１２０°
但し、
ωＸ：撮像画面の長手方向の画角 The wide angle lens according to claim 1, wherein the following conditional expression is satisfied.
ωX> 120 °
However,
ωX: Angle of view in the longitudinal direction of the imaging screen
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008202872A JP2010039261A (en) | 2008-08-06 | 2008-08-06 | Wide-angle lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008202872A JP2010039261A (en) | 2008-08-06 | 2008-08-06 | Wide-angle lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2010039261A true JP2010039261A (en) | 2010-02-18 |
Family
ID=42011879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008202872A Pending JP2010039261A (en) | 2008-08-06 | 2008-08-06 | Wide-angle lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2010039261A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5544559B1 (en) * | 2013-12-26 | 2014-07-09 | ナルックス株式会社 | Imaging optical system |
| CN105824108A (en) * | 2015-01-09 | 2016-08-03 | 大立光电股份有限公司 | Thin optical system, image acquisition device and electronic device |
| CN113495344A (en) * | 2020-04-07 | 2021-10-12 | 信泰光学(深圳)有限公司 | Imaging lens |
| US11774715B2 (en) | 2020-05-15 | 2023-10-03 | Sintai Optical (Shenzhen) Co., Ltd. | Lens assembly |
-
2008
- 2008-08-06 JP JP2008202872A patent/JP2010039261A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5544559B1 (en) * | 2013-12-26 | 2014-07-09 | ナルックス株式会社 | Imaging optical system |
| CN105824108A (en) * | 2015-01-09 | 2016-08-03 | 大立光电股份有限公司 | Thin optical system, image acquisition device and electronic device |
| CN113495344A (en) * | 2020-04-07 | 2021-10-12 | 信泰光学(深圳)有限公司 | Imaging lens |
| CN113495344B (en) * | 2020-04-07 | 2023-06-23 | 信泰光学(深圳)有限公司 | Imaging lens |
| US11774715B2 (en) | 2020-05-15 | 2023-10-03 | Sintai Optical (Shenzhen) Co., Ltd. | Lens assembly |
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