CN212229292U

CN212229292U - Optical lens piece offset adjustment structure

Info

Publication number: CN212229292U
Application number: CN202021281219.0U
Authority: CN
Inventors: 沈晨; 陈龙; 黄键
Original assignee: Wuxi Seemile Laser Display Technology Co Ltd
Current assignee: Wuxi Seemile Laser Display Technology Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2020-12-25
Anticipated expiration: 2030-07-02

Abstract

The utility model discloses an optical lens piece adjustment structure that moves partially, including optical module and fixed module, still include two at least adjustment assembly that constitute by spacing module, connecting screw and adjusting nut, the connecting screw includes anterior screw thread section and rear portion screw thread section, be provided with the draw-in groove that supplies spacing module to slide in on the fixed module, be provided with the hoop recess that supplies spacing module card to go into on adjusting nut's the outer wall, the anterior screw thread section of connecting screw passes during fixed module twists optical module, the adjusting nut suit is outside the rear portion screw thread section of connecting screw, radial card goes into in adjusting nut's hoop recess into when spacing module slides in the draw-in groove to prevent adjusting nut axial displacement, when making adjusting nut rotate under the exogenic action connecting screw ability axial displacement, thereby drive optical module and remove. The adjustable clamp has the characteristics of compact structure, small occupied space, high adjustment precision and stable structure after adjustment and fixation.

Description

Optical lens piece offset adjustment structure

Technical Field

The utility model relates to an optical instrument technical field, concretely relates to optical lens's installation adjustment structure is particularly suitable for using to the projector that optical lens adjustment accuracy requires highly, also is applicable to on the optical module of other similar needs adjustment.

Background

Since the projector has high requirements for optical precision, and there are many various lens-reflector lenses in the optical path body. To achieve the most desirable display, fine adjustment of the portion of the lens is usually required.

Fig. 1 and 2 show a conventional optical lens offset adjustment structure applied to two different positions, but the adjustment structure is the same. The method specifically comprises the following steps: the optical lens is mounted on a lens holder, collectively referred to as an "optical module". The optical module 1 to be adjusted is mounted on the fixed module 2 (usually an external case) through a spring 6 and a stepped screw 7, a set screw 8 is further mounted on the fixed module 2, the end of the set screw 8 penetrates through the fixed module 2 and then abuts against the optical module 1, and the set screw 8 is screwed to push the optical module 1, so that the adjustment of the optical lens is realized. When the angle of the optical lens is adjusted finely, the screwing value of each set screw is different.

The adjusting structure needs to be respectively provided with a step screw and a stop screw, and the fixed module has more hole sites needing to be processed and occupies larger space; if the size of the optical module to be adjusted is smaller, the distance between the two stop screws is very small, and the corresponding adjustment precision is reduced; because the optical module is connected with the fixed module by the spring, when the optical module is influenced by external force exceeding the elastic force of the spring, the optical lens is easy to generate bias.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an installation adjustment structure that is used for between optical module and the fixed module, have compact structure, occupation space is little, and the adjustment precision is high, and adjusts the characteristics that fixed back structure is firm.

Therefore, the utility model discloses the technical scheme who adopts does: the utility model provides an optical lens piece adjustment structure that moves partially, includes optical module and fixed module, still includes two at least adjustment assembly that constitute by spacing module, connecting screw and adjusting nut, the connecting screw includes anterior screw thread section and rear portion screw thread section, be provided with the draw-in groove that supplies spacing module to slide in on the fixed module, be provided with the hoop recess that supplies spacing module card to go into on adjusting nut's the outer wall, the anterior screw thread section of connecting screw passes during fixed module twists optical module, adjusting nut suit is outside the rear portion screw thread section of connecting screw, radial card is gone into in adjusting nut's hoop recess when spacing module slides in the draw-in groove to prevent adjusting nut axial displacement, when making adjusting nut rotate under the exogenic action connecting screw ability axial displacement to drive optical module and remove.

Preferably, the clamping groove is defined by a pair of L-shaped clamping blocks which are oppositely arranged on the outer wall of the fixed module at intervals left and right. A pair of L-shaped clamping blocks oppositely arranged on the outer wall of the fixed module at left and right intervals is adopted to form a clamping groove in a surrounding mode, the structure is simple, and the manufacturing is convenient.

Further preferably, the adjusting nut is small in front end diameter and large in rear end diameter to form a step, the front end small diameter section is just matched with a via hole in the fixing module, and the annular groove is just arranged at the step position, so that the adjusting nut is convenient to install.

Preferably, the connecting screw has a small diameter in the front threaded section and a large diameter in the rear threaded section.

Preferably, the optical module is provided with a cylindrical boss, a front thread section of the connecting screw is screwed into a thread hole of the cylindrical boss, and a rear thread section of the connecting screw is just abutted against the end face of the cylindrical boss; the connection reliability of the connecting screw and the optical module is ensured, and the installation consistency of products is improved.

Preferably, the rear end of the adjusting nut is provided with a linear slot for inserting a screwdriver, and the linear screwdriver is used for adjusting, so that the adjusting nut is easier and more labor-saving.

The utility model has the advantages that: (1) the adjusting nut is screwed to adjust the connecting screw which is nested and connected with the adjusting nut, so that the adjusting hole is overlapped with the fixed connecting hole, the number of holes to be processed is small, the structure is compact, and the occupied space is small; (2) the adjusting nut and the connecting screw form a screw nut mechanism, and compared with the traditional set screw adjustment, the screw nut mechanism has small requirement on space size and higher adjustable range and adjustable precision; (3) need twist adjusting nut and just can adjust, compare traditional spring coupling's mode, fixed back structure is more stable.

Drawings

Fig. 1 is a schematic view of a conventional optical lens offset adjustment structure.

Fig. 2 shows a second application of a conventional optical lens bias adjustment structure (the spring is hidden inside and not visible).

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is an exploded view of fig. 3.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

referring to fig. 3-4, an optical lens offset adjusting structure mainly comprises an optical module 1, a fixing module 2, a limiting module 3, a connecting screw 4 and an adjusting nut 5. The optical module 1 is composed of an optical lens and a lens holder which need to adjust the offset. The stationary module 2 is typically an external housing for an optical instrument, such as a projector.

The limiting module 3, the connecting screw 4 and the adjusting nut 5 constitute an adjusting assembly, and at least two adjusting assemblies, but not limited to two adjusting assemblies, need to be equipped between the optical module 1 and the fixing module 2.

The connecting screw 4 is of a two-stage structure and comprises a front threaded section 4a and a rear threaded section 4 b. Preferably, the threaded front section 4a of the connecting screw 4 has a small diameter and the threaded rear section 4b has a large diameter.

The fixed module 2 is provided with a clamping groove 2a for the limiting module 3 to slide in; preferably, the slot 2a is defined by a pair of L-shaped blocks disposed on the outer wall of the fixed module 2 at left and right intervals. The structure of the clamping groove 2a is not limited to this, and can also be formed by slotting the fixed module 2, and can limit the limit module 3 and prevent the limit module 3 from moving along the axial direction of the connecting screw 4.

An annular groove 5a for clamping the limiting module 3 is formed in the outer wall of the adjusting nut 5; preferably, the adjusting nut 5 has a small front diameter and a large rear diameter to form a step, and the small front diameter section is just matched with the via hole on the fixed module 2. The annular groove 5a is just arranged at the step position, so that the limiting module 3 is just clamped between the fixed module 2 and the step surface of the adjusting nut 5 after being clamped into the annular groove 5 a. The rear end of the adjusting nut 5 is provided with a linear notch 5b for inserting a screwdriver, and the adjusting nut 5 can be screwed by a linear opener to rotate, so that the connecting screw 4 is driven to move axially. Of course, a cross-shaped notch can be formed.

The front threaded section 4a of the connecting screw 4 penetrates through the fixing module 2 and is screwed into the optical module 1, the adjusting nut 5 is sleeved outside the rear threaded section 4b of the connecting screw 4, and the limiting module 3 slides into the clamping groove 2a and is radially clamped into the annular groove 5a of the adjusting nut 5 to prevent the adjusting nut 5 from axially moving. Because the adjusting nut 5 can not move axially but only rotate, the connecting screw 4 can move axially when the adjusting nut 5 rotates under the action of external force, so that the optical module 1 is driven to move. The adjusting nut 5 and the connecting screw 4 form a screw nut mechanism, the adjusting nut 5 only rotates, and the connecting screw 4 only moves axially.

Preferably, the optical module 1 is provided with a cylindrical boss 1a, a front threaded section 4a of the connecting screw 4 is screwed into a threaded hole of the cylindrical boss 1a, the optical module is suitable for the condition that the optical module 1 is thin, the cylindrical boss 1a is additionally arranged to increase the depth of the threaded hole, and the reliable connection between the front end of the connecting screw 4 and the optical module 1 is ensured; the rear part thread section 4b of the connecting screw 4 is just propped against the end surface of the cylindrical boss 1a, the screwing in-place feeling is obvious, and the installation consistency of the product is good.

During the equipment, pass fixed module 2 earlier with optical module 1 screws up together connecting screw 4 (connecting screw 4 is last to have the step face, it can to twist to be immobile), adjusting nut 5 and connecting screw 4 threaded connection go deep into the via hole of fixed module 2, and insert spacing module 3 simultaneously, block adjusting nut 5 and ensure that adjusting nut 5 can't follow axial displacement, only can rotate, only need rotate adjusting nut 5 during the adjustment, can drive connecting screw 4 along axial displacement, thereby reach the adjustment mesh, fix after the adjustment again to carry out the point glue.

Claims

1. An optical lens piece offset adjustment structure, includes optical module (1) and fixed module (2), its characterized in that: the optical module is characterized by further comprising at least two adjusting components consisting of a limiting module (3), a connecting screw (4) and an adjusting nut (5), wherein the connecting screw (4) comprises a front threaded section (4a) and a rear threaded section (4b), a clamping groove (2a) for the limiting module (3) to slide into is arranged on the fixed module (2), a circumferential groove (5a) for the limiting module (3) to be clamped into is arranged on the outer wall of the adjusting nut (5), the front threaded section (4a) of the connecting screw (4) penetrates through the fixed module (2) to be screwed into the optical module (1), the adjusting nut (5) is sleeved outside the rear threaded section (4b) of the connecting screw (4), the limiting module (3) slides into the clamping groove (2a) and is radially clamped into the circumferential groove (5a) of the adjusting nut (5) to prevent the adjusting nut (5) from moving axially, when the adjusting nut (5) rotates under the action of external force, the connecting screw (4) can move axially, so that the optical module (1) is driven to move.

2. An optical lens deflection adjustment structure according to claim 1, wherein: the clamping groove (2a) is defined by a pair of L-shaped clamping blocks which are oppositely arranged on the outer wall of the fixed module (2) at left and right intervals.

3. An optical lens deflection adjustment structure according to claim 1, wherein: the adjusting nut (5) is small in front end diameter and large in rear end diameter to form a step, the front end small diameter section is just matched with a through hole in the fixed module (2), and the annular groove (5a) is just arranged at the step position.

4. An optical lens deflection adjustment structure according to claim 1, wherein: the diameter of the front threaded section (4a) of the connecting screw (4) is small, and the diameter of the rear threaded section (4b) is large.

5. An optical lens deflection adjustment structure as claimed in claim 4, wherein: the optical module (1) is provided with a cylindrical boss (1a), a front thread section (4a) of the connecting screw (4) is screwed into a thread hole of the cylindrical boss (1a), and a rear thread section (4b) of the connecting screw (4) just abuts against the end face of the cylindrical boss (1 a).

6. An optical lens deflection adjustment structure according to any one of claims 1 to 5, wherein: the rear end of the adjusting nut (5) is provided with a linear notch (5b) for inserting a screwdriver.