CN201965249U

CN201965249U - Adjustable type lens

Info

Publication number: CN201965249U
Application number: CN2011200820801U
Authority: CN
Inventors: 杜锡军; 戴兴丽
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-09-07
Anticipated expiration: 2021-03-25

Abstract

The utility model discloses a lens, the focal length of which can be manually adjusted; the lens comprises a lens frame in which a lens is arranged and a handle connected with the lens frame; the lens is characterized in that the lens comprises two elastic mirror surfaces and filling solution, wherein the edges of the mirror surfaces are connected, and the filling solution is filled in a cavity formed by the two mirror surfaces; the handle is hollow and is communicated with the cavity formed by the two mirror surfaces; and the handle is internally provided with a piston which pushes the filling solution to flow in the front and back moving process along the length direction of the handle. The end part of one end of the handle far away from the lens frame is provided with an internal thread and a screw which is connected with the piston and is matched with the internal thread. The end of the handle far away from the piston is connected with an adjustable sleeve, the inner diameter of which is larger than the outer diameter of the handle; and an opening of the adjustable sleeve faces the direction of the lens frame. The external surface of the handle is provided with a calibration. As the piston can push the filling solution to change the shape of the lens surfaces by adjusting the adjustable sleeve, the focal length of the lens is changed, thereby very well overcoming the problem that the common lens only has one focal length.

Description

A kind of adjustable lens

Technical field

The utility model relates to lens technologies, but relates in particular to a kind of lens technologies of manual focusing distance.

Background technology

The lens that people use at ordinary times, general all be have one fixedly minute surface magnifier or dwindle mirror, has only a focal length, be inconvenient to realize for the needs of once observing in various degree like this, and when observing object, need hold lens do repeatedly near and away from adjustment, the user is caused very big inconvenience.

Summary of the invention

The purpose of this utility model is: but the lens of a kind of manual focusing distance of proposition, to solve the deficiency that prior art exists.

In order to realize the purpose of the utility model, intend adopting following technology: picture frame is arranged, be installed in the eyeglass in the picture frame, and the handle that is connected with picture frame, it is characterized in that: described eyeglass comprises the elasticity minute surface that two edges connect, and is filled in the filling liquid between the cavity that two minute surfaces form; Described handle is a hollow, and is communicated with the cavity of two elasticity minute surfaces formation, and is provided with the piston that the promotion filling liquid flows in the process that seesaws along the decreased food direction in the handle.

As preferred version, described handle is provided with internal thread away from an end end of picture frame, also be provided with piston to be connected, and with the screw rod of internal thread coupling.

As preferred version, described screw rod is coaxially connected with the regulating sleeve of internal diameter greater than the handle external diameter away from an end of piston, and the regulating sleeve opening is towards the direction of picture frame.

As preferred version, described handle outside surface is provided with scale.

Compared with prior art, the beneficial effects of the utility model are: thus owing to can drive screw rod piston promotion filling liquid is flowed by the turn regulating sleeve, the concavo-convex degree of minute surface is changed, thereby the focal length of eyeglass changed, and this has just overcome the problem that ordinary lens has only a kind of fixed focal length well.

Description of drawings

Fig. 1 has illustrated a kind of cross-section structure of the present utility model.

State when Fig. 2 has illustrated that lens adjustment become concavees lens.

State when Fig. 3 has illustrated that lens adjustment become convex lens.

Fig. 4 has illustrated the position of handle high scale.

1, picture frame; 2, eyeglass; 21, minute surface; 22, filling liquid; 3, handle; 31, internal thread; 32, scale; 4, regulating sleeve; 5, screw rod; 6, piston.

Embodiment

With reference to the accompanying drawings embodiment of the present utility model is made a detailed explanation below.

According to Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, of the present utility model being characterised in that: eyeglass 2 comprises the elasticity minute surface 21 that two edges connect, and is filled in the filling liquid 22 between the cavity that two minute surfaces form; Described handle 3 is a hollow, and is communicated with the cavity of two elasticity minute surfaces, 21 formation, and is provided with the piston 6 that promotion filling liquid 22 flows in the process that seesaws along handle 3 length directions in the handle 3.Described handle 3 is provided with internal thread 31 away from an end end of picture frame 1, also be provided with piston 6 to be connected, and with the screw rod 5 of internal thread 31 coupling.Described screw rod 5 is coaxially connected with the regulating sleeve 4 of internal diameter greater than the handle external diameter away from 6 one ends of piston, and regulating sleeve 4 openings are towards the direction of picture frame 1.Described handle 3 outside surfaces are provided with scale 32.

Described minute surface 21 has drawn from and has certain flexible transparent plastic or rubber.

In the use, as shown in Figure 3, when using as magnifier and will obtain bigger focal length, then counterclockwise turn regulating sleeve 4, the regulating sleeve 4 drives screw rod 5 of coaxial connection with it are rotated counterclockwise, thereby drive piston 6 to the direction motion away from picture frame 1, thereby the filling liquid 22 between two minute surfaces 21 is flowed in the handles 3, this just makes the distance at two minute surfaces, 21 middle parts correspondingly reduce, thereby has increased focal length; In like manner, in the time of the less focal length of needs, then turn regulating sleeve 4 gets final product clockwise.Scale 32 on handle 3 outside surfaces can be that reference point is provided with the end of regulating sleeve 4, so just can generally show corresponding focal length.

Claims

1. adjustable lens have picture frame (1), are installed in the eyeglass (2) in the picture frame (1), and the handle (3) that is connected with picture frame (1), it is characterized in that:

A, described eyeglass (2) comprise the elasticity minute surface (21) that two edges connect, and are filled in the filling liquid (22) between the cavity that two minute surfaces (21) form;

B, described handle (3) are hollow, and are communicated with cavity that two elasticity minute surfaces (21) form, and are provided with in the handle (3) promote the mobile piston (6) of filling liquid (22) in seesawing process along handle (3) length direction.

2. a kind of adjustable lens according to claim 1, it is characterized in that: described handle (3) is provided with internal thread (31) away from an end end of picture frame (1), also be provided with piston (6) and be connected, and with the screw rod (5) of internal thread (31) coupling.

3. a kind of adjustable lens according to claim 2, it is characterized in that: described screw rod (5) is coaxially connected with the regulating sleeve (4) of internal diameter greater than handle (3) external diameter away from an end of piston (6), and regulating sleeve (4) opening is towards the direction of picture frame (1).

4. according to claim 1 or 2 or 3 described a kind of adjustable lens, it is characterized in that: described handle (3) outside surface is provided with scale (32).