CN203275748U

CN203275748U - Relay lens and lens module detection device

Info

Publication number: CN203275748U
Application number: CN201320055666.8U
Authority: CN
Inventors: 谭少沛
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2013-11-06
Anticipated expiration: 2023-01-29

Abstract

The utility model discloses a relay lens and a lens module detection device. The relay lens at least comprises a first lens and a second lens which are arranged in sequence, and the first lens and the second lens are combined into a convex lens group which is provided with a positive focal distance. The lens module detection device includes the relay lens and a virtual resolution plate which is used for projection imaging, wherein the second lens of the relay lens faces the virtual resolution plate, and the virtual resolution plate is oppositely arranged out of a distance twice the focal distance of the relay lens. During the detection, the lens module to be detected is placed on the side close to the first lens of the relay lens and is placed within the distance twice the focal distance of the relay lens, and the lens module generates an image on the virtual resolution plate via the relay lens. Therefore, the quality of the lens module can be judged through the imaging quality of the virtual resolution plate.

Description

A kind of relay lens and lens module detecting device

Technical field

The utility model relates to lens module detecting device, relates in particular to the relay lens that a kind of lens module detecting device is used.

Background technology

Along with the development of photography and vedio recording technology, the camera lens module all is widely used on various photography and vedio recording devices, for example, except traditional camera, video camera, all the camera lens module can be housed at present on mobile phone, panel computer and other portable equipments.The quality of camera lens module quality directly affects the image quality of product, so for guaranteed quality, after lens module group assembling is completed, usually need to detect evaluation to its performance, and this will use lens module detecting device.conventional camera lens module detects, to be imaged onto on certain distance resolving power test target far away by the detector lens module, judge the performance quality of camera lens module by the image quality of resolving power test target, and due to the image-forming principle of camera lens module, require resolving power test target apart from one section relative larger distance of camera lens module, this distance usually 3m or more than, will occupy more place so obviously, and because resolving power test target carries out true imaging, therefore its area also requires larger, as seen present camera lens module detects, usually require larger space, comparatively strict to site requirements, may serve inconvenience to detection and the production band of camera lens module, and be unfavorable for cost savings or control, therefore improved necessity arranged.

The utility model content

It is little that the purpose of this utility model is to provide a kind of place to occupy, and saves cost, and camera lens module easy to detect detects with relay lens and lens module detecting device and detection method thereof.

The utility model is that the technical scheme that its technical matters of solution adopts is:

A kind of relay lens comprises first lens and second lens of arranged in sequence at least, and wherein this first, second lens combination is the convex lens group with positive focal length.

Further, described first, second lens are fixed by lens barrel.

Further, also be arranged with the 3rd lens of blistering lens function between described first, second lens, the 3rd lens are monolithic eyeglass or the polymerization part of two above eyeglasses.

Further, the ascending arrangement of the diameter of described the first, the 3rd, second lens.

Described lens barrel periphery is provided with for supporting fixing outer.

A kind of lens module detecting device comprises above-mentioned relay lens, and a virtual resolving power test target for projection imaging, and the second lens of relay lens wherein are towards virtual resolving power test target, and virtual resolving power test target is oppositely disposed in outside one times of focal distance of relay lens.

The detection method of above-mentioned lens module detecting device, the camera lens module that will detect is placed in relay lens near a side of first lens, and within one times of focal distance apart from relay lens, the camera lens module produces image by after relay lens, image on described virtual resolving power test target, by this can be by the quality of the judgement of the image quality on virtual resolving power test target camera lens module.

The beneficial effects of the utility model are: the relay lens that the utility model provides and virtual resolving power test target, with and the pick-up unit that forms, when the detector lens module, the image of camera lens module will the refraction by relay lens after, imaging on virtual resolving power test target, it can be completed in a very little space, therefore the utility model is compared traditional pick-up unit and method, and volume is reduced, and the place takies also less, testing process is also more convenient reasonable, more saves space and cost.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment relay lens of the utility model;

Fig. 2 is the structural representation of the utility model the second embodiment relay lens;

Fig. 3 is the structural representation of the utility model lens module detecting device;

Schematic diagram when Fig. 4 is the detection of the utility model lens module detecting device;

Fig. 5 is the imaging schematic diagram of the utility model lens module detecting device.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

Below in conjunction with specific embodiment, specific implementation of the present utility model is described in detail:

As shown in Figure 1, the relay lens that a kind of embodiment of the present utility model provides, it mainly is fixed in by first lens 1 and the second lens 2, and lens barrel 4 is interior to be formed, the relay lens integral body that this structure forms becomes the convex lens group with positive focal length, embodiment as figure, first lens 1 wherein is planoconvex lens, towards camera lens module face, be that lateral surface is designed to the plane, its medial surface is convex surface, and the second 2, lens are meniscus lens, and its lateral surface is convex surface, medial surface is concave surface, can certainly adopt other array modes; As shown in Figure 2, in another kind of embodiment, different according to the situation of detector lens module, can use the relay lens of other focal length requirements, for example require in the relay lens of higher focal length, the 3rd lens 3, the three lens 3 that also are arranged with the blistering lens function between first lens 1, the second lens 2 are the biconvex mirror structure in illustrated embodiment, it can be that the monolithic eyeglass is made, and can be also the polymerization part of two above eyeglasses.First lens 1, the second lens 2 and the 3rd lens 3 are fixing by lens barrel 4, embodiment shown in figure for example, lens barrel 4 is designed to have the structure of three step inner rings, and the first, the 3rd, second lens 1,3,2 the ascending arrangement of diameter, three steps of lens barrel 4 come descending three lens of arranging of holding with corresponding trim ring 42 respectively, form fixed sturcture.Relay lens will be convenient to fix in structure of the detecting device in addition, therefore can outer 41 be set in its periphery, and outer 41 can be convenient to support fixing by screw or screens are set.

As shown in Figure 3, the lens module detecting device of the above-mentioned relay lens of application provided by the utility model, it separately is equipped with a virtual resolving power test target 5 that is used for projection imaging, the second lens 2 of relay lens wherein are towards virtual resolving power test target 5, as projection side, and virtual resolving power test target 5 is oppositely disposed in outside one times of focal distance of relay lens.

as shown in Figure 4, when camera lens module 6 is detected, at first the camera lens module 6 that will detect is placed in the side in kind of relay lens, an and side of close first lens 1, and adjust the position of relay lens or camera lens module 6 by relevant apparatus, allow camera lens module 6 apart within one times of focal distance f distance of relay lens, open afterwards camera lens module 6, allow camera lens module 6 produce image, image is by after relay lens, a side from the second lens 2, imaging on virtual resolving power test target 5, visible its image-forming principle as shown in Figure 5, this picture is the virtual image 5 one-tenth of virtual resolving power test targets after relay lens of the image of camera lens module 6, wherein arrow place, up and down represents relay lens, virtual resolving power test target 5 will be positioned at outside one times of focal distance f of relay lens, can represent that it is apart from the distance of relay lens by v, and being positioned at the adaptation position of one times of focal distance f of relay lens, camera lens module 6 gets final product, according to circumstances a needs is adjusted the position of virtual resolving power test target 5, can obtain all the time the figure of needs, and according to this picture quality, the testing staff can judge the quality of camera lens module 6, and then complete the detection of camera lens module.

The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Claims

1. relay lens, it is characterized in that: comprise at least first lens (1) and second lens (2) of arranged in sequence, wherein these first, second lens (1,2) are combined as the convex lens group with positive focal length.

2. a kind of relay lens according to claim 1 is characterized in that: described first, second lens (2) are fixing by lens barrel (4).

3. a kind of relay lens according to claim 2, it is characterized in that: also be arranged with the 3rd lens (3) of blistering lens function between described first, second lens (1,2), the 3rd lens (3) are monolithic eyeglass or the polymerization part of two above eyeglasses.

4. a kind of relay lens according to claim 3, is characterized in that: the ascending arrangement of diameter of described the first, the 3rd, second lens (1,3,2).

5. a kind of relay lens according to claim 4 is characterized in that: described lens barrel (4) periphery is provided with for supporting fixing outer (41).

6. lens module detecting device, it is characterized in that comprising the described relay lens of any one in claim 1～5, an and virtual resolving power test target (5) that is used for projection imaging, second lens (2) of relay lens wherein are towards virtual resolving power test target (5), and virtual resolving power test target (5) is oppositely disposed in outside one times of focal distance of relay lens.