CN105093485A

CN105093485A - Mobile phone lens optical structure

Info

Publication number: CN105093485A
Application number: CN201510544655.XA
Authority: CN
Inventors: 刘思佳
Original assignee: Suzhou Kai De Microtronics AS
Current assignee: Suzhou Kai De Microtronics AS
Priority date: 2015-08-31
Filing date: 2015-08-31
Publication date: 2015-11-25

Abstract

Disclosed is a mobile phone lens optical structure. The mobile phone lens optical structure comprises a first positive lens, a second negative lens, a third negative lens and an optical filter which are coaxially successively arranged from an object plane to an image plane, wherein a diaphragm is arranged between the first positive lens and the second negative lens. According to the invention, a three-piece type structure in which the diaphragm is arranged between the first positive lens and the second negative lens and the three lenses are arranged according to a positive-negative-negative sequence. For the purposes of reducing the total length of a system lens and guaranteeing the imaging quality, the materials of the lenses respectively employ APL5014DO, POLYSTYR and ARTON-D4531, finally, the total length of the lens is reduced to 2.19mm, the effective focal length f is 1.589mm, an MTF value at a 295 lp/mm position is greater than 0.2, the illumination of all view fields is above 0.83, and various aberrations are effectively controlled. Therefore, the system provided by the invention is applied to such fields as mobile phones, PC optics, safety protection identification optics and the like.

Description

A kind of mobile lens optical texture

Technical field

The present invention relates to a kind of mobile lens optical texture, belong to mobile phone optical technical field.

Background technology

In recent years, along with the growth requirement of mobile phone market and the breakthrough of camera lens related process, aspheric surface

Mobile lens has been widely used in various mobile phone.Due to the development of semiconductor manufacturing, the Pixel Dimensions of sensor is more and more less, and the Lens of high pixel is also more and more less.And diminishing of Lens is thinning, for the thinner design of camera mobile phone provides more spaces.

Tradition camera mobile phone camera lens is made up of 3 eyeglasses, and from object plane to image planes, first eyeglass is positive lens, and second eyeglass is negative lens, and the 3rd eyeglass is positive lens, so-called three-chip type structure that Here it is.By being optimized it, the camera lens that Lens is less can be designed.

Summary of the invention

According to above-mentioned requirements, the object of this invention is to provide a kind of mobile lens optical texture, with the needs of ultra-thin aspheric surface mobile lens.

For achieving the above object, the present invention is realized by following technological means:

A kind of mobile lens optical texture, is characterized in that: comprise the first positive lens of arranged in co-axial alignment successively from object plane to image planes, the second negative lens, the 3rd negative lens, optical filter, between the first positive lens, the second negative lens, be provided with diaphragm.

Further:

Described first positive lens, the second negative lens, the 3rd negative lens material are optical plastic.

The material of described first positive lens is APL5014DO, and the material of the second negative lens is POLYSTYR, and the material of the 3rd negative lens is ARTON-D4531.

The overall length of described a kind of mobile lens optical texture is 2.19mm.

The focal length of described a kind of mobile lens optical texture is 1.589mm.

The illumination of the visual field of described a kind of mobile lens optical texture is more than 0.83.

Described first positive lens, the second negative lens, the 3rd negative lens refractive index are respectively 1.533,57.98,1.616.

Described first positive lens, the second negative lens, the 3rd negative lens Abbe number are respectively 30.97,1.518,57.39.

The invention has the beneficial effects as follows: the design adopts diaphragm to be positioned between the first positive lens and the second negative lens and by n-negative-negative tactic three-chip type structure.In order to shorten the total length of system camera lens, ensure image quality, the material of each lens employs APL5014DO, POLYSTYR, ARTON-D4531 respectively, lost scene overall length is shortened into 2.19mm, effective focal length f is 1.589mm, at 295lp/mm place, mtf value is all greater than 0.2, and the illumination of all visual fields is all more than 0.83, and various aberration is obtained for effective control.Therefore this system is suitable for the fields such as mobile phone, PC optics, security protection identification optics.

Accompanying drawing explanation

Fig. 1 is the design's structural representation.

Embodiment

Below in conjunction with Figure of description, the present invention is further illustrated.

As shown in Figure 1, a kind of mobile lens optical texture, it is characterized in that: the first positive lens 1, second negative lens 2, the 3rd negative lens 3, the optical filter 4 that comprise arranged in co-axial alignment successively from object plane to image planes, be provided with diaphragm 4 between the first positive lens 1, second negative lens 2.

Further:

Described first positive lens 1, second negative lens 2, the 3rd negative lens 3 material are optical plastic.

The material of described first positive lens 1 is APL5014DO, and the material of the second negative lens 2 is POLYSTYR, and the material of the 3rd negative lens 3 is ARTON-D4531.

First 3 have employed aspherical plastic lens, APEL is a kind of cycloolefin copolymer that Mitsui chemical utilization Ziegler polymerization technique is developed, the main chain framework of this cycloolefin copolymer has huge fat system ring texture, APEL is impalpable structure, has excellent optical property and impermeability, colourless and transparent, transmittance reaches 91%, mist degree (haze) is 4%, and two index of refraction is very low, and its complex index of refraction is less than 20nm.The ultralow complex index of refraction of APEL makes its glass aspheric lenses that can match in excellence or beauty, and can replace glass aspheric lenses.Polystyrene (POLYSTYR) is a kind of transparent thermoplastics, and light transmission rate is 90%, and refractive index is high, and abbe number is little, close with flint glass, also referred to as flint plastics.Its outstanding feature is that radiation resistance is good, also has water absorptivity little, nonpoisonous and tasteless, do not produce mould, lens dimension good stability, mouldability and good processability, low price, the advantages such as some mineral oil of ability, organic acids and base, lower alcohol and solution corrosion thereof, are applicable to manufacturing eyeglass.Wherein ARTON optical plastic is a kind of polyolefins plastics, by Japan SYnthetic Rubber Co. Ltd's development and production.ARTON optical plastic has extraordinary heat-resisting, mechanical, physics, optical property, and its density is minimum, is minimum in current thermoplastics, is applicable to making non-spherical lens.

The focal length of described a kind of mobile lens optical texture is 1.589mm.

Described first positive lens 1, second negative lens 2, the 3rd negative lens 3 refractive index are respectively 1.533,57.98,1.616.

Described first positive lens 1, second negative lens 2, the 3rd negative lens 3 Abbe number are respectively 30.97,1.518,57.39.

More than show and describe ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand; the design is not restricted to the described embodiments; the principle that the design is just described described in above-described embodiment and instructions; under the prerequisite not departing from the design's spirit and scope; the design also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the design.The claimed scope of the design is defined by appending claims and equivalent thereof.

Claims

1. a mobile lens optical texture, is characterized in that: comprise the first positive lens of arranged in co-axial alignment successively from object plane to image planes, the second negative lens, the 3rd negative lens, optical filter, between the first positive lens, the second negative lens, be provided with diaphragm.

2. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: described first positive lens, the second negative lens, the 3rd negative lens material are optical plastic.

3. a kind of mobile lens optical texture as claimed in claim 2, is characterized in that: the material of described first positive lens is APL5014DO, and the material of the second negative lens is POLYSTYR, and the material of the 3rd negative lens is ARTON-D4531.

4. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: the overall length of described a kind of mobile lens optical texture is 2.19mm.

5. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: the focal length of described a kind of mobile lens optical texture is 1.589mm.

6. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: the illumination of the visual field of described a kind of mobile lens optical texture is more than 0.83.

7. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: described first positive lens, the second negative lens, the 3rd negative lens refractive index are respectively 1.533,57.98,1.616.

8. a kind of mobile lens optical texture as claimed in claim 1, is characterized in that: described first positive lens, the second negative lens, the 3rd negative lens Abbe number are respectively 30.97,1.518,57.39.