CN106646826A - Day-night confocal glass and plastic hybrid lens - Google Patents

Day-night confocal glass and plastic hybrid lens Download PDF

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Publication number
CN106646826A
CN106646826A CN201611142489.1A CN201611142489A CN106646826A CN 106646826 A CN106646826 A CN 106646826A CN 201611142489 A CN201611142489 A CN 201611142489A CN 106646826 A CN106646826 A CN 106646826A
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CN
China
Prior art keywords
lens
aspherical
day
glass
plastic cement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201611142489.1A
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Chinese (zh)
Other versions
CN106646826B (en
Inventor
王斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yaan Glass Optical & Electronic Technology Co Ltd
Original Assignee
Yaan Glass Optical & Electronic Technology Co Ltd
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Filing date
Publication date
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Priority to CN201611142489.1A priority Critical patent/CN106646826B/en
Publication of CN106646826A publication Critical patent/CN106646826A/en
Application granted granted Critical
Publication of CN106646826B publication Critical patent/CN106646826B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/004—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having four lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The invention discloses a day-night confocal glass and plastic hybrid lens, which comprises a lens group and is characterized in that the lens group comprises a plastic aspherical negative lens G1, an aperture diaphragm B2, a glass positive lens G2, a plastic aspherical positive lens G3 and a plastic aspherical negative lens G4 which are sequentially arranged from left to right along the incident direction of light. According to the hybrid lens with the above structure, glass lenses and plastic lenses are adopted to form the lens group, the number of lenses is small, and the cost is low. In addition, the lens can achieve a confocal effect day and night, and is not defocusing at a high temperature of 80 DEG C and a low temperature of minus 20 DEG C. The resolution achieves up to 300 mega pixels.

Description

A kind of day and night confocal glass moulds hybrid lenses
Technical field
The present invention relates to a kind of day and night confocal camera lens being made up of glass lens and plastic lens mixing.
Background technology
With the fast development in security protection market, quality requirements original higher, production scale of the market to safety monitoring camera lens Also it is increasing.Existing stationary lens group is typically using glass as raw material.But glass processing difficulty is larger, causes mirror It is relatively costly.And for monitoring camera, it is necessary to which 7X24 hours are worked continuously, it is desirable to which the necessary day night work of camera lens is burnt, and And need cold-resistant high temperature resistance.
The content of the invention
In view of this, the present invention provides a kind of day and night confocal glass and moulds hybrid lenses, is made up of glass lens and plastic lens Lens group, its high resolution, can be day and night confocal up to 3,000,000 pixels, and in 80 degrees Celsius of high temperature, -20 degrees Celsius of low temperature is not It is empty burnt.
To solve above technical problem, the technical scheme is that：A kind of day and night confocal glass moulds hybrid lenses, including saturating Microscope group, the lens group injects direction and is arranged in sequence with plastic cement aspherical negative lens G1, aperture diaphragm B2 from left to right along light, Glass positive lens G2, plastic cement aspherical positive lens G3, the aspherical negative lens G4 of plastic cement.
As a kind of improvement, the lens group effective focal length f '=3.6mm, relative aperture number F number=2.0, optical system Overall length is less than 22.5mm.
Used as a kind of improvement, 4 pieces of lens left side surface curvatures are R1, and the right surface curvature is R2, and lens are thick Degree t, refractive index Nd, and airspace d meet following requirement：
The radius R1 of the aspherical negative lens G1 of plastic cement is 12～15mm, and R2 is 2～4mm, and thickness t is 1.0～1.5mm, is rolled over It is 1.48～1.55 to penetrate rate, and airspace d is 5～7mm；
The radius R1 of glass positive lens G2 be 7～9mm, R2 be 7～9mm, thickness t be 2～4mm, refractive index be 1.35～ 1.55, airspace is 2～4mm；
The radius R1 of the aspherical negative lens G3 of plastic cement is 3～5mm, and R2 is 3～5mm, and thickness t is 2.0～3.5mm, is reflected Rate is 1.43～1.56, and airspace d is 0.1～1mm；
The radius R1 of the aspherical negative lens G4 of plastic cement is 3～5mm, and R2 is 50～55mm, and thickness t is 0.6～1.5mm, is rolled over It is 1.53～1.66 to penetrate rate, and airspace d is 0.3～0.9mm.
As a kind of preferred, according to aspherical definitional equation
The aspherical negative lens G1 meets following relation：
R1
K=0
A=-0.00057482436
B=-3.099337e-005
C=6.0799645e-007
D=0
R2
K=-1.184384
A=0.0056806337
B=0.00045110478
C=-5.1487214e-005
D=9.3628039e-007
Aspherical positive lens G3 meet following relation：
R1
K=-5.087009
A=0.0068569807
B=-0.00051232823
C=1.9806736e-005
R2
K=-0.4238141
A=0.0026914045
B=0.00026804837
C=0
Aspherical negative lens G4 meets following relation：
R1
K=-0.4716016
A=0.0049172591
B=0.00027074116
C=0
R2
K=-50.01021
A=0.0067140824
B=-7.8354163e-005
C=0.
The invention has benefit that：Hybrid lenses with said structure, using glass lens and plastic lens structure Into lens group, its lens numbers is few, with low cost.And this camera lens can realize it is day and night confocal, in 80 degrees Celsius of high temperature, low temperature- 20 degrees Celsius of not empty Jiao.Resolution ratio is even more and has reached 3,000,000 pixels.
Description of the drawings
Fig. 1 is lens group structure schematic diagram of the present invention.
Fig. 2 is lens group index path of the present invention.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, with reference to specific embodiment The present invention is described in further detail.
As shown in Figure 1 and Figure 2, the present invention includes lens group, and the lens group is arranged successively from left to right along light incident direction The aspherical negative lens G1 of plastic cement is shown, aperture diaphragm B2, glass positive lens G2, plastic cement aspherical positive lens G3, plastic cement is aspherical Negative lens G4.
The performance parameter of the present invention is as follows：Lens group effective focal length f '=3.6mm, relative aperture number F number=2.0, optics System overall length is less than 22.5mm.
In order to reach above-mentioned parameter requirement, 4 pieces of lens left side surface curvatures are R1, and the right surface curvature is R2, lens thickness t, refractive index Nd, and airspace d meet following requirement：
The radius R1 of the aspherical negative lens G1 of plastic cement is 12～15mm, and R2 is 2～4mm, and thickness t is 1.0～1.5mm, is rolled over It is 1.48～1.55 to penetrate rate, and airspace d is 5～7mm；
The radius R1 of glass positive lens G2 be 7～9mm, R2 be 7～9mm, thickness t be 2～4mm, refractive index be 1.35～ 1.55, airspace is 2～4mm；
The radius R1 of the aspherical negative lens G3 of plastic cement is 3～5mm, and R2 is 3～5mm, and thickness t is 2.0～3.5mm, is reflected Rate is 1.43～1.56, and airspace d is 0.1～1mm；
The radius R1 of the aspherical negative lens G4 of plastic cement is 3～5mm, and R2 is 50～55mm, and thickness t is 0.6～1.5mm, is rolled over It is 1.53～1.66 to penetrate rate, and airspace d is 0.3～0.9mm.
According to aspherical definitional equation
The aspherical negative lens G1 meets following relation：
R1
K=0
A=-0.00057482436
B=-3.099337e-005
C=6.0799645e-007
D=0
R2
K=-1.184384
A=0.0056806337
B=0.00045110478
C=-5.1487214e-005
D=9.3628039e-007
Aspherical positive lens G3 meet following relation：
R1
K=-5.087009
D=0.0068569807
B=-0.00051232823
C=1.9806736e-005
R2
K=-0.4238141
A=0.0026914045
B=0.00026804837
C=0
Aspherical negative lens G4 meets following relation：
R1
K=-0.4716016
A=0.0049172591
B=0.00027074116
C=0
R2
K=-50.01021
A=0.0067140824
B=-7.8354163e-005
C=0.
Glass with above structure and parameter modeling hybrid lenses, its resolution ratio can reach 3,000,000 pixels, it is possible to achieve day and night It is confocal, and in 80 degrees Celsius of high temperature, not empty Jiao of -20 degrees Celsius of low temperature.
The above is only the preferred embodiment of the present invention, it is noted that it is right that above-mentioned preferred embodiment is not construed as The restriction of the present invention, protection scope of the present invention should be defined by claim limited range.For the art For those of ordinary skill, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, these change Enter and retouch also to should be regarded as protection scope of the present invention.

Claims (4)

1. a kind of day and night confocal glass moulds hybrid lenses, including lens group, it is characterised in that：The lens group injects direction along light The aspherical negative lens G1 of plastic cement, aperture diaphragm B2, glass positive lens G2, plastic cement aspherical positive lens are arranged in sequence with from left to right G3, the aspherical negative lens G4 of plastic cement.
2. a kind of day and night confocal glass according to claim 1 moulds hybrid lenses, it is characterised in that：The lens group is effectively burnt Away from f '=3.6mm, relative aperture number FNumber=2.0, optical system overall length is less than 22.5mm.
3. a kind of day and night confocal glass according to claim 1 moulds hybrid lenses, it is characterised in that：4 pieces of lens left side curved surfaces Radius of curvature is R1, and the right surface curvature is that R2, lens thickness t, refractive index Nd, and airspace d meet following wanting Ask：
The radius R1 of the aspherical negative lens G1 of plastic cement be 12～15mm, R2 be 2～4mm, thickness t be 1.0～1.5mm, refractive index For 1.48～1.55, airspace d is 5～7mm；
The radius R1 of glass positive lens G2 is 7～9mm, and R2 is 7～9mm, and thickness t is 2～4mm, and refractive index is 1.35～1.55, Airspace is 2～4mm；
The radius R1 of the aspherical negative lens G3 of plastic cement is 3～5mm, and R2 is 3～5mm, and thickness t is 2.0～3.5mm, and refractive index is 1.43～1.56, airspace d are 0.1～1mm；
The radius R1 of the aspherical negative lens G4 of plastic cement be 3～5mm, R2 be 50～55mm, thickness t be 0.6～1.5mm, refractive index For 1.53～1.66, airspace d is 0.3～0.9mm.
4. a kind of day and night confocal glass according to claim 1 moulds hybrid lenses, it is characterised in that：According to aspherical definition side Formula
Z = CY 2 I + I - ( K + I ) C 2 Y 2 + aY 4 + bY 6 + cY 8 + dY 10
The aspherical negative lens G1 meets following relation：
R1
K=0
A=-0.00057482436
B=-3.099337e-005
C=6.0799645e-007
D=0
R2
K=-1.184384
A=0.0056806337
B=0.00045110478
C=-5.1487214e-005
D=9.3628039e-007
Aspherical positive lens G3 meet following relation：
R1
K=-5.087009
A=0.0068569807
B=-0.00051232823
C=1.9806736e-005
R2
K=-0.4238141
A=0.0026914045
B=0.00026804837
C=0
Aspherical negative lens G4 meets following relation：
R1
K=-0.4716016
A=0.0049172591
B=0.00027074116
C=0
R2
K=-50.01021
A=0.0067140824
B=-7.8354163e-005
C=0.
CN201611142489.1A 2016-12-12 2016-12-12 A kind of day and night confocal glass modeling hybrid lens Expired - Fee Related CN106646826B (en)

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Application Number Priority Date Filing Date Title
CN201611142489.1A CN106646826B (en) 2016-12-12 2016-12-12 A kind of day and night confocal glass modeling hybrid lens

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CN106646826A true CN106646826A (en) 2017-05-10
CN106646826B CN106646826B (en) 2019-04-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110703417A (en) * 2019-11-13 2020-01-17 福建福光股份有限公司 All-plastic aspheric day and night confocal optical system

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111810A (en) * 1998-09-30 2000-04-21 Asahi Optical Co Ltd Ocular optical system for single lens reflex camera
US20070047103A1 (en) * 2005-08-26 2007-03-01 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus including the same
JP2008033064A (en) * 2006-07-28 2008-02-14 Fujinon Corp Zoom lens
CN103718079A (en) * 2011-07-26 2014-04-09 柯尼卡美能达株式会社 Wide-angle lens, imaging optical device, and digital instrument
CN104834077A (en) * 2015-05-28 2015-08-12 中山市弘景光电科技有限公司 Image pickup lens for image pickup device
CN204595310U (en) * 2015-05-28 2015-08-26 中山市弘景光电科技有限公司 Camera lens
CN204731477U (en) * 2015-06-06 2015-10-28 中山市弘景光电科技有限公司 The camera lens of a kind of high pixel intelligent camera optical system and application thereof
CN105242383A (en) * 2015-10-13 2016-01-13 利达光电股份有限公司 Wide-aperture day and night confocal glass and plastic hybrid lens
CN205210401U (en) * 2015-11-23 2016-05-04 舜宇光学(中山)有限公司 Dual -purpose monitoring camera of day night
CN205679839U (en) * 2016-04-21 2016-11-09 凤凰光学安防（上海）有限公司 A kind of high/low temperature confocal optical arrangement it
JP2016194604A (en) * 2015-03-31 2016-11-17 コニカミノルタ株式会社 Wide-angle lens, lens unit and imaging device

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111810A (en) * 1998-09-30 2000-04-21 Asahi Optical Co Ltd Ocular optical system for single lens reflex camera
US20070047103A1 (en) * 2005-08-26 2007-03-01 Canon Kabushiki Kaisha Zoom lens and image pickup apparatus including the same
JP2008033064A (en) * 2006-07-28 2008-02-14 Fujinon Corp Zoom lens
CN103718079A (en) * 2011-07-26 2014-04-09 柯尼卡美能达株式会社 Wide-angle lens, imaging optical device, and digital instrument
JP2016194604A (en) * 2015-03-31 2016-11-17 コニカミノルタ株式会社 Wide-angle lens, lens unit and imaging device
CN104834077A (en) * 2015-05-28 2015-08-12 中山市弘景光电科技有限公司 Image pickup lens for image pickup device
CN204595310U (en) * 2015-05-28 2015-08-26 中山市弘景光电科技有限公司 Camera lens
CN204731477U (en) * 2015-06-06 2015-10-28 中山市弘景光电科技有限公司 The camera lens of a kind of high pixel intelligent camera optical system and application thereof
CN105242383A (en) * 2015-10-13 2016-01-13 利达光电股份有限公司 Wide-aperture day and night confocal glass and plastic hybrid lens
CN205210401U (en) * 2015-11-23 2016-05-04 舜宇光学(中山)有限公司 Dual -purpose monitoring camera of day night
CN205679839U (en) * 2016-04-21 2016-11-09 凤凰光学安防（上海）有限公司 A kind of high/low temperature confocal optical arrangement it

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110703417A (en) * 2019-11-13 2020-01-17 福建福光股份有限公司 All-plastic aspheric day and night confocal optical system

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Granted publication date: 20190430