CN106646826B - A kind of day and night confocal glass modeling hybrid lens - Google Patents

A kind of day and night confocal glass modeling hybrid lens Download PDF

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Publication number
CN106646826B
CN106646826B CN201611142489.1A CN201611142489A CN106646826B CN 106646826 B CN106646826 B CN 106646826B CN 201611142489 A CN201611142489 A CN 201611142489A CN 106646826 B CN106646826 B CN 106646826B
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China
Prior art keywords
lens
aspherical
plastic cement
day
glass
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Application number
CN201611142489.1A
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Chinese (zh)
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CN106646826A (en
Inventor
王斌
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Yaan Glass Optical & Electronic Technology Co Ltd
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Yaan Glass Optical & Electronic Technology Co Ltd
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    • 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 kind of day and night confocal glass to mould hybrid lens, including lens group, the lens group are arranged in sequence with the aspherical negative lens G1 of plastic cement along light incident direction from left to right, aperture diaphragm B2, glass positive lens G2, plastic cement aspherical positive lens G3, the aspherical negative lens G4 of plastic cement.Hybrid lens with above structure constitute lens group using glass lens and plastic lens, and lens numbers are few, low in cost.And this camera lens be able to achieve it is day and night confocal, at 80 degrees Celsius of high temperature, the not empty coke of -20 degrees Celsius of low temperature.Resolution ratio is even more to have reached 3,000,000 pixels.

Description

A kind of day and night confocal glass modeling hybrid lens
Technical field
The day and night confocal camera lens constituted is mixed by glass lens and plastic lens the present invention relates to a kind of.
Background technique
With the fast development in security protection market, market was originally higher to the quality requirements of safety monitoring camera lens, production scale Also increasing.Existing stationary lens group generally uses glass as raw material.However glass processing difficulty is larger, leads to mirror Head higher cost.And for monitoring camera, it is necessary to work continuously within 7X24 hours, it is desirable that the necessary day night work of camera lens is burnt, and And it is resistant to high temperatures to need to resist cold.
Summary of the invention
In view of this, the present invention provides a kind of day and night confocal glass modeling hybrid lens, it is made of glass lens and plastic lens Lens group, high resolution, can be day and night confocal up to 3,000,000 pixels, and at 80 degrees Celsius of high temperature, -20 degrees Celsius of low temperature is not It is empty burnt.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of day and night confocal glass moulds hybrid lens, including it is saturating Microscope group, the lens group inject direction along light and are arranged in sequence with plastic cement aspherical negative lens G1, aperture diaphragm B2 from left to right, Glass positive lens G2, plastic cement aspherical positive lens G3, the aspherical negative lens G4 of plastic cement.
As an improvement number=2.0 the lens group effective focal length f '=3.6mm, relative aperture number F, optical system Overall length is less than 22.5mm.
As an improvement 4 pieces of lens left side surface curvatures are R1, the right surface curvature is R2, and lens are thick It spends t, refractive index Nd and airspace d and meets following require:
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, folding Penetrating rate is 1.48~1.55, 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, refraction 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, folding Penetrating rate is 1.53~1.66, and airspace d is 0.3~0.9mm.
As a preference, according to aspherical definitional equation
The aspherical negative lens G1 meets following relationship:
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 meets following relationship:
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 relationship:
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 the beneficial effects that: the hybrid lens with above structure, using glass lens and plastic lens structure At lens group, lens numbers are few, low in cost.And this camera lens be able to achieve it is day and night confocal, at 80 degrees Celsius of high temperature, low temperature- 20 degrees Celsius of not empty cokes.Resolution ratio is even more to have reached 3,000,000 pixels.
Detailed description of the invention
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 to make those skilled in the art more fully understand technical solution of the present invention, With reference to 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 successively arranged from left to right along light incident direction Show the aspherical negative lens G1 of plastic cement, aperture diaphragm B2, glass positive lens G2, plastic cement aspherical positive lens G3, plastic cement is aspherical Negative lens G4.
Performance parameter of the invention is as follows: lens group effective focal length f '=3.6mm, number=2.0 relative aperture number F, 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 require:
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, folding Penetrating rate is 1.48~1.55, 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, refraction 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, folding Penetrating rate is 1.53~1.66, and airspace d is 0.3~0.9mm.
According to aspherical definitional equation
The aspherical negative lens G1 meets following relationship:
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 meets following relationship:
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 relationship:
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 the above structure and parameter moulds hybrid lens, and resolution ratio can reach 3,000,000 pixels, may be implemented day and night It is confocal, and at 80 degrees Celsius of high temperature, the not empty coke of -20 degrees Celsius of low temperature.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change It also should be regarded as protection scope of the present invention into retouching.

Claims (3)

1. a kind of day and night confocal glass moulds hybrid lens, including lens group, it is characterised in that: the lens group injects direction along light It is arranged in sequence with the aspherical negative lens G1 of plastic cement, aperture diaphragm B2, glass positive lens G2, plastic cement aspherical positive lens from left to right G3, the aspherical negative lens G4 of plastic cement；According to aspherical definitional equation
The aspherical negative lens G1 meets following relationship:
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 meets following relationship:
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 relationship:
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.
2. a kind of day and night confocal glass according to claim 1 moulds hybrid lens, it is characterised in that: the lens group is effectively burnt Away from f '=3.6mm, number=2.0 relative aperture number F, optical system overall length is less than 22.5mm.
3. a kind of day and night confocal glass according to claim 1 moulds hybrid lens, 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 satisfaction are wanted as follows It asks:
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, refractive index It is 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 is 3~5mm, and R2 is 50~55mm, and thickness t is 0.6~1.5mm, refractive index It is 1.53~1.66, airspace d is 0.3~0.9mm.
CN201611142489.1A 2016-12-12 2016-12-12 A kind of day and night confocal glass modeling hybrid lens Active CN106646826B (en)

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CN106646826B true CN106646826B (en) 2019-04-30

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* 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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JP4262335B2 (en) * 1998-09-30 2009-05-13 Ｈｏｙａ株式会社 Eyepiece optical system of single-lens reflex camera
JP4777018B2 (en) * 2005-08-26 2011-09-21 キヤノン株式会社 Zoom lens and imaging apparatus having the same
JP2008033064A (en) * 2006-07-28 2008-02-14 Fujinon Corp Zoom lens
JP5644947B2 (en) * 2011-07-26 2014-12-24 コニカミノルタ株式会社 Wide-angle lens, imaging optical device and digital equipment
JP6525144B2 (en) * 2015-03-31 2019-06-05 コニカミノルタ株式会社 Wide-angle lens, lens unit, and imaging device
CN104834077B (en) * 2015-05-28 2017-05-31 广东弘景光电科技股份有限公司 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
CN105242383B (en) * 2015-10-13 2017-11-24 利达光电股份有限公司 Day and night confocal glass moulds hybrid lenses for a kind of large aperture
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

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