CN104330882A - Self-adaption zooming system and self-adaption zooming method - Google Patents

Abstract

The invention relates to a self-adaption zooming system and a self-adaption zooming method, belonging to the technical field of zooming. The self-adaption zooming system comprises a front fixing group, a first zooming group, a second zooming group, a first compensation group, a second compensation group and a rear fixing group which are sequentially and coaxially arranged, wherein a detector is arranged on an output light path of the rear fixing group and is used for imaging the light of the rear fixing group; the output end of the detector is connected with a control component; the control component is connected with the first zooming group, the second zooming group, the first compensation group and the second compensation group in a control manner and is used for controlling the first zooming group, the second zooming group, the first compensation group and the second compensation group to move in the axial direction according to the imaging situation of the detector, thereby achieving continuous zooming of the system. By adopting the zooming system provided by the invention, the imaging quality is good within the range of 10-400mm, the zooming achieving route is simple, and a small amount of lenses are used.

Description

A kind of self-adaptation zoom system, pancreatic system and method

Technical field

The present invention relates to a kind of self-adaptation zoom system, pancreatic system and method, belong to zoom technology field.

Background technology

Zoom technology has many merits, having a wide range of applications in various fields. zoom technology has discrete type zoom and continuous vari-focus two kinds of modes of many structures usually, the visual field change of the Zooming method of discrete type normally system is discrete, there is the problem that imaging results can not be carried out continuously.In some existing zoom technology, when needs will realize continuous vari-focus time, usually there is zoom realizing route complicated, the quantity of the eyeglass that needs adopt is very large waits deficiency.

Summary of the invention

The object of this invention is to provide a kind of self-adaptation zoom system, pancreatic system and method, to solve the zoom realizing route complexity that prior art exists, need large numbers of problems of the eyeglass adopted.

The present invention is for solving the problems of the technologies described above and providing a kind of self-adaptation zoom system, pancreatic system, this zoom system, pancreatic system comprises front fixing group of arranged in co-axial alignment successively, first zoom group, second zoom group, first compensating group, second compensating group and latter fixing group, rear fixing group output light path is provided with detector, for carrying out imaging to the light of latter fixing group, the output terminal of detector is connected to Control Component, Control Component control linkage first zoom group, second zoom group, first compensating group and the second compensating group, Control Component is used for controlling the first zoom group according to the imaging contexts of detector, second zoom group, first compensating group and the second compensating group move axially, realize the continuous vari-focus of system.

Before described, fixing group is a bent moon positive lens.

Described first zoom group, the second zoom group, the first compensating group and the second compensating group adopt 4 aspheric surfaces.

The focal range of described zoom system, pancreatic system is 10mm ~ 400mm.

The present invention additionally provides a kind of self-adaptation Zooming method for solving the problems of the technologies described above, and this Zooming method comprises the following steps:

1) by first fixing group, the first zoom group, the second zoom group, the first compensating group, the second compensating group and rear fixing group of arranged in co-axial alignment successively in order;

2) detector is set on rear fixing group of output light path, for carrying out imaging to the output light of latter fixing group;

3) gather the imaging signal of detector, control the first zoom group, the second zoom group, the first compensating group and the second compensating group according to its imaging signal and move axially, realize system continuous vari-focus.

Before described, fixing group is a bent moon positive lens.

Described first zoom group, the second zoom group, the first compensating group and the second compensating group adopt 4 aspheric surfaces.

The focal range of described zoom is 10mm ~ 400mm.

The invention has the beneficial effects as follows: self-adaptation zoom system, pancreatic system of the present invention comprises front fixing group of arranged in co-axial alignment successively, first zoom group, second zoom group, first compensating group, second compensating group and latter fixing group, rear fixing group output light path is provided with detector, for carrying out imaging to the light of latter fixing group, the output terminal of detector is connected to Control Component, Control Component control linkage first zoom group, second zoom group, first compensating group and the second compensating group, Control Component is used for controlling the first zoom group according to the imaging contexts of detector, second zoom group, first compensating group and the second compensating group move axially, realize the continuous vari-focus of system.Good by zoom system, pancreatic system of the present invention image quality within the scope of focal length 10mm ~ 400mm, and zoom realizing route of the present invention is simple, number of lenses is few.

Accompanying drawing explanation

Fig. 1 is the structured flowchart of self-adaptation zoom system, pancreatic system of the present invention;

Fig. 2-1 is the first analogous diagram of the modulation transfer function (MTF) of system;

Fig. 2-2 is second analogous diagram of the modulation transfer function (MTF) of system;

Fig. 2-3 is the 3rd analogous diagram of the modulation transfer function (MTF) of system;

Fig. 3-1 is the first analogous diagram of the disperse (RMS) of system;

Fig. 3-2 is second analogous diagram of the disperse (RMS) of system;

Fig. 3-3 is the 3rd analogous diagram of the disperse (RMS) of system.

Embodiment

The embodiment of a kind of adaptive zoom system, pancreatic system of the present invention

Zoom system, pancreatic system in the present embodiment as shown in Figure 1, comprise front fixing group 101 of arranged in co-axial alignment successively, first zoom group 102, second zoom group 103, first compensating group 104, second compensating group 105 and latter fixing group 106, detector 107 is arranged on rear fixing group of 106 output light paths, for carrying out imaging to the light of latter fixing group 106, the output terminal of detector 107 is connected to Control Component 108, Control Component 108 control linkage first zoom group 102, second zoom group 103, first compensating group 104 and the second compensating group 105, Control Component 108 is for controlling the first zoom group 102 according to the imaging contexts of detector, second zoom group 103, first compensating group 104 and the second compensating group 105 move axially, realize the continuous vari-focus of system.

Wherein, fixing group 101 is a bent moon positive lens, premenstrual fixing group 101 of light converges, first zoom group 102, second zoom group 103, first compensating group 104 and the second compensating group 105 adopt 4 aspheric surfaces respectively, and the focal range of this system is 10mm ~ 400mm, and aspherical equation is:

$z=\frac{{\mathrm{ch}}^2}{1+\mathrm{SQRT}\{1-(1+k)c^2{h}^2\}}+{\mathrm{Ah}}^4+{\mathrm{Bh}}^6+{\mathrm{Ch}}^8+{\mathrm{Dh}}^{10}+{\mathrm{Eh}}^{12}+{\mathrm{Fh}}^{14}+{\mathrm{Gh}}^{16}+{\mathrm{Hh}}^{18}+{\mathrm{Jh}}^{20}$

In formula, z represents the direction that light transmits; C represents the curvature (CUY) on summit; K represents circular cone coefficient (K), and A, B, C, D, E, F, G, H, J represent higher order deformation coefficient.

In the process of zoom, fixing group keeps fixing, and zoom group and compensating group are according to the path calculated, smooth motion, carry out by Control Component the movement locus adjusting each group.The modulation transfer function emulation of system is as shown in Fig. 2-1,2-2 and 2-3, and the disperse simulation result of system is as shown in Fig. 3-1,3-2 and 3-3.

The embodiment of a kind of self-adaptation Zooming method of the present invention

1. by first fixing group 101, the first zoom group 102, second zoom group 103, first compensating group 104, second compensating group 105 and rear fixing group 106 arranged in co-axial alignment successively in order, as shown in Figure 1, wherein, fixing group 101 is a bent moon positive lens, premenstrual fixing group 101 of light converges, and the first zoom group 102, second zoom group 103, first compensating group 104 and the second compensating group 105 adopt 4 aspheric surfaces respectively.Aspherical equation is:

$z=\frac{{\mathrm{ch}}^2}{1+\mathrm{SQRT}\{1-(1+k)c^2{h}^2\}}+{\mathrm{Ah}}^4+{\mathrm{Bh}}^6+{\mathrm{Ch}}^8+{\mathrm{Dh}}^{10}+{\mathrm{Eh}}^{12}+{\mathrm{Fh}}^{14}+{\mathrm{Gh}}^{16}+{\mathrm{Hh}}^{18}+{\mathrm{Jh}}^{20}$

In formula, z represents the direction that light transmits; C represents the curvature (CUY) on summit; K represents circular cone coefficient (K), and A, B, C, D, E, F, G, H, J represent higher order deformation coefficient.

2. detector is set on rear fixing group of output light path, for carrying out imaging to the output light of latter fixing group.As shown in Figure 1, detector 107 is arranged on the output light path of latter fixing group 6.

3. gather the imaging signal of detector, control the first zoom group, the second zoom group, the first compensating group and the second compensating group according to its imaging signal and move axially, realize system continuous vari-focus.Adopt Control Component 108 to realize in this enforcement, the input end of Control Component 108 is connected with the output terminal of detector 107, and the output terminal of Control Component 108 controls the first zoom group, the second zoom group, the first compensating group and the second compensating group and moves axially.In the process of zoom, fixing group keeps fixing, and zoom group and compensating group are according to the path calculated, smooth motion, carry out by Control Component the movement locus adjusting each group.The modulation transfer function emulation of system is as shown in Fig. 2-1,2-2 and 2-3, and the disperse simulation result of system is as shown in Fig. 3-1,3-2 and 3-3.

Claims (8)

1. a self-adaptation zoom system, pancreatic system, it is characterized in that, this zoom system, pancreatic system comprises front fixing group of arranged in co-axial alignment successively, first zoom group, second zoom group, first compensating group, second compensating group and latter fixing group, rear fixing group output light path is provided with detector, for carrying out imaging to the light of latter fixing group, the output terminal of detector is connected to Control Component, Control Component control linkage first zoom group, second zoom group, first compensating group and the second compensating group, Control Component is used for controlling the first zoom group according to the imaging contexts of detector, second zoom group, first compensating group and the second compensating group move axially, realize the continuous vari-focus of system.

2. self-adaptation zoom system, pancreatic system according to claim 1, is characterized in that, before described, fixing group is a bent moon positive lens.

3. self-adaptation zoom system, pancreatic system according to claim 2, is characterized in that, described first zoom group, the second zoom group, the first compensating group and the second compensating group adopt 4 aspheric surfaces.

4. the self-adaptation zoom system, pancreatic system according to any one of claim 1-3, is characterized in that, the focal range of described zoom system, pancreatic system is 10mm ~ 400mm.

5. a self-adaptation Zooming method, is characterized in that, this Zooming method comprises the following steps:

1) by first fixing group, the first zoom group, the second zoom group, the first compensating group, the second compensating group and rear fixing group of arranged in co-axial alignment successively in order;

2) detector is set on rear fixing group of output light path, for carrying out imaging to the output light of latter fixing group;

3) gather the imaging signal of detector, control the first zoom group, the second zoom group, the first compensating group and the second compensating group according to its imaging signal and move axially, realize system continuous vari-focus.

6. self-adaptation Zooming method according to claim 5, is characterized in that, before described, fixing group is a bent moon positive lens.

7. self-adaptation Zooming method according to claim 6, is characterized in that, described first zoom group, the second zoom group, the first compensating group and the second compensating group adopt 4 aspheric surfaces.

8. the self-adaptation Zooming method according to any one of claim 5-7, is characterized in that, the focal range of described zoom is 10mm ~ 400mm.