CN216595687U

CN216595687U - Eyepiece adjusting structure

Info

Publication number: CN216595687U
Application number: CN202123095933.8U
Authority: CN
Inventors: 姜绪木; 李錾; 谢飞
Original assignee: Medet Optics Anhui Co ltd
Current assignee: Medet Optics Anhui Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-24
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to the technical field of eyepiece equipment, in particular to an eyepiece adjusting structure. The adjusting wheel of the eyepiece adjusting structure is sleeved on the outer wall of the spiral cylinder. The inner wall of the adjusting wheel is provided with a sliding groove. The spiral cylinder is sleeved on the outer wall of the lens cone. The spiral cylinder is connected with the lens cone through a screw. The screw slides in the sliding groove along with the rotation of the adjusting wheel, and drives the spiral cylinder and the lens cone to move along the axial direction of the ocular. The head end of the spiral cylinder is provided with a connecting plate. The tail end of the spiral cylinder is provided with an eyeshade joint. The outer wall of the spiral cylinder is provided with a first sealing structure and a second sealing structure. The interior of the lens barrel has a chamber that houses the lens assembly. The tail end of the lens cone is provided with a press ring. And a third sealing structure and a fourth sealing structure are arranged on the outer wall of the lens barrel. This adjust the focusing structure of structure optimization current eyepiece, avoided the eye-shade to rotate along with the regulating wheel together, and then promoted the use of eyepiece and experienced, improved the sealing performance of eyepiece simultaneously, guaranteed the formation of image effect.

Description

Eyepiece adjusting structure

Technical Field

The utility model relates to the technical field of eyepiece equipment, in particular to an eyepiece adjusting structure.

Background

An eyepiece is an optical device that observes the image of a front optical system. An eyepiece is often used at the rear end of the objective lens of telescopes and microscopes to further magnify the image captured by the objective lens. In order to obtain better imaging effect, a focusing mechanism is arranged on the ocular. The focusing mechanism comprises a fixed eyepiece barrel, a rotating wheel and an adjusting eyepiece barrel. The manual adjusting rotating wheel rotates, the rotating wheel drives the adjusting eyepiece barrel to rotate through threads, and meanwhile, the adjusting eyepiece barrel makes axial telescopic motion relative to the fixed eyepiece barrel, so that the focal length of the eyepiece is adjusted.

In the use of the wearable eyepiece, the rear end of the eyepiece is usually connected with an eye mask in order to improve the wearing comfort. Therefore, when the ocular lens adjusts the focal length, the rotating wheel drives the adjusting ocular lens barrel to rotate so as to drive the eye mask to rotate, and the adjustment of the focal length is difficult to realize during wearing. Especially, the angle eye cover combined with the ocular greatly influences the experience of the user when using the ocular.

In addition, in the eyepiece with the focusing mechanism, the adjusting eyepiece barrel makes axial telescopic motion relative to the fixed eyepiece barrel, and the sealing performance in the eyepiece is difficult to ensure. The vapor in the air easily enters the gap of the lens component in the using process of the ocular lens to form a fog-like layer, and further the imaging effect of the whole optical system is influenced.

To sum up, at eyepiece focus adjustment's in-process, how to design an adjustment structure for optimize current focusing structure, the eye-shade of avoiding the eyepiece rear end to connect rotates along with focusing structure's runner together, and then promotes the use of eyepiece and experiences, improves the sealing performance of eyepiece simultaneously, guarantees the imaging effect, just becomes the technical problem that technical staff in the field awaits the solution urgently.

Disclosure of Invention

The utility model aims to provide an adjusting structure for an eyepiece to adjust the focal length, so that the existing focusing structure is optimized, an eyeshade connected with the rear end of the eyepiece is prevented from rotating along with a rotating wheel of the focusing structure, the use experience of the eyepiece is further improved, meanwhile, the sealing performance of the eyepiece is improved, and the imaging effect is ensured.

In order to achieve the purpose, the utility model adopts the following scheme: an ocular adjusting structure is provided, which comprises an adjusting wheel, a spiral cylinder and a lens cone;

the adjusting wheel is sleeved on the outer wall of the spiral cylinder, and a sliding groove is formed in the inner wall of the adjusting wheel;

the spiral cylinder is sleeved on the outer wall of the lens barrel and connected with the lens barrel through a screw, the screw slides in the sliding groove along with the rotation of the adjusting wheel to drive the spiral cylinder and the lens barrel to move along the axial direction of the ocular lens, a connecting plate connected with the front optical system is arranged at the head end of the spiral cylinder, an eyeshade joint is arranged at the tail end of the spiral cylinder, a first sealing structure and a second sealing structure are arranged on the outer wall of the spiral cylinder, the first sealing structure is located at the connecting position of the connecting plate and the spiral cylinder, and the second sealing structure is located between the tail end of the sliding groove and the eyeshade joint;

the lens barrel is characterized in that a cavity for accommodating the lens assembly is formed in the lens barrel, a pressing ring for locking the lens assembly is arranged at the tail end of the lens barrel, and a third sealing structure and a fourth sealing structure are arranged on the outer wall of the lens barrel.

Preferably, the first sealing structure comprises a first sealing groove located on the outer wall of the spiral cylinder, a first sealing ring is arranged in the first sealing groove, the second sealing structure comprises a second sealing groove located on the outer wall of the spiral cylinder, a second sealing ring is arranged in the second sealing groove, the third sealing structure comprises a third sealing groove located on the outer wall of the lens barrel, a third sealing ring is arranged in the third sealing groove, the fourth sealing structure comprises a fourth sealing groove located on the outer wall of the lens barrel, and a fourth sealing ring is arranged in the fourth sealing groove. So set up, first seal structure and second seal structure are convenient for form the movive seal in the outside of spiral section of thick bamboo, and the spiral section of thick bamboo is along the axial motion of eyepiece under the drive of regulating wheel, and first sealing washer and second sealing washer produce deformation and then form sealedly at the outer wall of spiral section of thick bamboo after receiving the extrusion, and third seal structure and fourth seal structure form the static seal at the inner wall of spiral section of thick bamboo, have further improved the sealing performance of lens cone, have promoted the water-proof effects of whole eyepiece.

Preferably, the outer wall of the adjusting wheel is provided with anti-skid patterns. So set up, the frictional force between anti-skidding decorative pattern is used for increasing hand and the regulating wheel, avoids taking place the condition of skidding at the in-process of focusing, is favorable to improving the regulation precision to the eyepiece focus.

Preferably, the connecting plate is provided with mounting holes which are annularly arranged on the end face of the connecting plate. So set up, the connecting plate of being convenient for links to each other with leading optical system, and then has improved joint strength, is favorable to further promoting the stability of whole optical system formation of image.

Preferably, the eyeshade joint is sleeved on the outer wall of the spiral cylinder, and an annular groove is formed in the outer wall of the eyeshade joint. So set up, the annular groove is used for the joint installation eye-shade, and the tip of annular groove is convenient for form the axial spacingly to the eye-shade, combines the elasticity of eye-shade self for the eye-shade forms the flexonics on eye-shade connects, is convenient for at focus regulation's in-process, plays the cushioning effect to the axial motion of lens cone, has further promoted the use of eyepiece and has experienced the sense.

Preferably, the lens assembly comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from the head end of the lens barrel to the tail end of the lens barrel along the axial direction of the lens barrel, a backing ring is arranged between the first lens and the second lens, the second lens is bonded with the third lens through glue, and a spacer bush is arranged between the third lens and the fourth lens. So set up, be favorable to each lens to form a whole in the lens cone, be convenient for realize quick adjustment to the focus, and then further improved the imaging effect of eyepiece.

Preferably, the first seal ring, the second seal ring, the third seal ring and the fourth seal ring are all O-ring seals. So set up, O shape sealing washer not only is applicable to static seal, still is applicable to the axial reciprocating motion under the low-speed, is favorable to reducing the kind of the sealing element of eyepiece, has optimized the holistic sealed effect of eyepiece.

Compared with the prior art, the eyepiece adjusting structure provided by the utility model has the following substantive characteristics and progresses:

1. according to the eyepiece adjusting structure, the adjusting wheel is sleeved on the outer wall of the spiral barrel, the spiral barrel is sleeved on the outer wall of the lens barrel and is connected with the lens barrel through a screw, the adjusting wheel is manually rotated, the screw slides in the sliding groove along with the rotation of the adjusting wheel through the rotating groove structure to drive the spiral barrel and the lens barrel to axially move along an eyepiece, the existing eyepiece focusing structure is optimized, the rotation of the spiral barrel and the lens barrel in the focusing process is avoided, further, the rotation of an eyeshade connected with the eyepiece through an eyeshade connector is avoided, and the use experience of the eyepiece is improved;

2. this eyepiece regulation structure utilizes first seal structure and second seal structure to form the movive seal in the outside of scroll section of thick bamboo, forms the static seal at the inner wall of scroll section of thick bamboo through setting up third seal structure and fourth seal structure, has promoted the sealing performance of eyepiece greatly, has avoided during steam in the air gets into the gap of lens subassembly in the use of eyepiece, and then has guaranteed the formation of image effect.

Drawings

Fig. 1 is a schematic view of an internal structure of an eyepiece adjusting structure according to an embodiment of the present invention.

Reference numerals: the eye-shade eye-shade eye-shade eye-shade eye-shade eye-shade eye-shade.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings.

An eyepiece adjusting structure as shown in fig. 1 is used for optimizing a focusing structure of an existing eyepiece. The adjusting wheel in the eyepiece adjusting structure is sleeved on the outer wall of the spiral cylinder. The spiral cylinder is sleeved on the outer wall of the lens cone and is connected with the lens cone through a screw. The adjusting wheel is manually rotated, and the screw slides in the sliding groove along with the rotation of the adjusting wheel through the rotating groove structure, so that the spiral cylinder and the lens barrel are driven to move along the axial direction of the ocular. Therefore, the rotation of the spiral cylinder and the lens cone in the focusing process is avoided, the rotation of the eye mask connected with the ocular lens through the eye mask connector is further avoided, and the use experience of the ocular lens is improved.

As shown in fig. 1, an eyepiece adjusting structure includes an adjusting wheel 2, a spiral cylinder 3, and a lens barrel 5. The adjusting wheel 2 is sleeved on the outer wall of the spiral cylinder 3. The inner wall of the adjusting wheel 2 is provided with a sliding groove 7.

The spiral cylinder 3 is sleeved on the outer wall of the lens cone 5. The spiral cylinder 3 is connected with the lens barrel 5 through a screw 6. The screw 6 slides in the sliding groove 7 along with the rotation of the adjusting wheel 2, and drives the spiral cylinder 3 and the lens cone 5 to move along the axial direction of the ocular. The head end of the spiral cylinder 3 is provided with a connecting plate 1 connected with a front optical system. The tail end of the spiral cylinder 3 is provided with an eyeshade joint 4. The outer wall of the spiral cylinder 3 is provided with a first sealing structure and a second sealing structure. The first sealing structure is positioned at the joint of the connecting plate 1 and the spiral cylinder 3. The second seal structure is located between the rear end of the slide groove 7 and the eyecup joint 4.

The barrel 5 has a chamber inside which the lens assembly is accommodated. The tail end of the lens barrel 5 is provided with a press ring 18 for locking the lens assembly. And a third sealing structure and a fourth sealing structure are arranged on the outer wall of the lens barrel 5. The press ring 18 is used to apply an axial locking force to the lens assembly from the rear end of the barrel 5 so that the lenses are integrated.

Wherein, first seal structure and second seal structure form the dynamic seal in the outside of spiral section of thick bamboo, form static seal at the inner wall of spiral section of thick bamboo through setting up third seal structure and fourth seal structure, have promoted the sealing performance of eyepiece greatly, have avoided the steam in the air to get into the gap of lens subassembly in the use of eyepiece, and then have guaranteed the formation of image effect.

As shown in fig. 1, the first sealing structure includes a first sealing groove 8 on the outer wall of the spiral cylinder 3. A first sealing ring is arranged in the first sealing groove 8. The second sealing structure includes a second sealing groove 9 on the outer wall of the spiral cylinder 3. A second sealing ring is arranged in the second sealing groove 9. The third sealing structure includes a third sealing groove 10 on the outer wall of the lens barrel 5. A third sealing ring is arranged in the third sealing groove 10. The fourth sealing structure includes a fourth sealing groove 11 on the outer wall of the lens barrel 5. A fourth seal ring is arranged in the fourth seal groove 11. So set up, first seal structure and second seal structure are convenient for form the dynamic seal in the outside of spiral section of thick bamboo 3, and spiral section of thick bamboo 3 is along the axial motion of eyepiece under the drive of regulating wheel 2, and first sealing washer and second sealing washer produce deformation and then form sealedly at the outer wall of spiral section of thick bamboo 3 after receiving the extrusion. The third sealing structure and the fourth sealing structure form static sealing on the inner wall of the spiral cylinder 3, so that the sealing performance of the lens barrel 5 is further improved, and the waterproof effect of the whole eyepiece is improved.

The first seal ring, the second seal ring, the third seal ring and the fourth seal ring can be preferably O-shaped seal rings. So set up, O shape sealing washer not only is applicable to static seal, still is applicable to the axial reciprocating motion under the low-speed, is favorable to reducing the kind of the sealing element of eyepiece, has optimized the holistic sealed effect of eyepiece.

As shown in fig. 1, the connecting plate 1 is provided with a mounting hole. The mounting holes are annularly arranged on the end face of the connecting plate 1. So set up, be convenient for connecting plate 1 and leading optical system link to each other, and then improved joint strength, be favorable to further promoting the stability of whole optical system formation of image.

The eyeshade joint 4 is sleeved on the outer wall of the spiral cylinder 3. The outer wall of the eye patch connector 4 is provided with an annular groove. So set up, annular groove is used for the joint installation eye-shade, and annular groove's tip is convenient for form the axial spacing to the eye-shade. Combine eye-shade self elasticity for eye-shade forms flexonics on eye-shade connects 4, is convenient for at the in-process of focus regulation, plays the cushioning effect to the axial motion of a mirror section of thick bamboo 5, has further promoted the use of eyepiece and has experienced the sense.

As shown in fig. 1, the lens assembly includes a first lens 12, a second lens 14, a third lens 15, and a fourth lens 17 arranged in sequence from a head end of the lens barrel 5 to a tail end of the lens barrel 5 along an axial direction of the lens barrel 5. A grommet 13 is disposed between the first lens 12 and the second lens 14. The second lens 14 is bonded to the third lens 15 by glue. A spacer 16 is provided between the third lens 15 and the fourth lens 17. So set up, be favorable to each lens to form a whole in lens cone 5, be convenient for realize quick adjustment to the focus, and then further improved the imaging effect of eyepiece.

For example, the structure and parameters of each lens in the lens assembly are as follows: the first lens 12 is a biconvex lens with a focal length of 28.2 mm. The second lens 14 and the third lens 15 are cemented to form a convex-concave cemented lens structure having a focal length of-73.1 mm. The fourth lens 17 is a plano-convex lens with a focal length of 16.7 mm. Spacer 13 has a thickness of 1.1mm so that an air distance of 2mm is formed between first lens 12 and the convex-concave cemented lens structure. The spacer 16 has a thickness of 4.8mm so that an air distance of 0.1mm is formed between the convex-concave cemented lens structure and the fourth lens 17.

The outer wall of the adjusting wheel 2 can be provided with anti-skid patterns. So set up, the frictional force between anti-skidding decorative pattern is used for increasing hand and regulating wheel 2 avoids taking place the condition of skidding at the in-process of focusing, is favorable to improving the regulation precision to the eyepiece focus.

When the eyepiece adjusting structure provided by the embodiment of the utility model is used, a user manually rotates the adjusting wheel, and the screw slides in the sliding groove along with the rotation of the adjusting wheel through the rotating groove structure to drive the spiral cylinder and the lens cone to move along the axial direction of the eyepiece. The user selects to rotate the adjusting wheel clockwise or anticlockwise according to the condition that the image is seen from the ocular lens until the clearest image is obtained. The spiral cylinder and the lens cone only do telescopic motion along the axial direction of the ocular lens under the limitation of the screw and the sliding groove in the focusing process, so that the rotation of the ocular lens connected with the ocular lens through the ocular lens joint is avoided, and the use experience of the ocular lens is greatly improved. In addition, utilize first seal structure and second seal structure to form the dynamic seal in the outside of spiral shell to and form static seal at the inner wall of spiral shell through setting up third seal structure and fourth seal structure, promoted the sealing performance of eyepiece greatly, avoided the steam in the air to get into the gap of lens subassembly in the use of eyepiece, further guaranteed the formation of image effect.

The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the utility model.

Claims

1. An eyepiece adjusting structure is characterized by comprising an adjusting wheel, a spiral cylinder and a lens cone;

2. The eyepiece adjusting structure of claim 1, wherein the first sealing structure comprises a first sealing groove located on an outer wall of the spiral cylinder, wherein a first sealing ring is disposed in the first sealing groove, wherein the second sealing structure comprises a second sealing groove located on the outer wall of the spiral cylinder, wherein a second sealing ring is disposed in the second sealing groove, wherein the third sealing structure comprises a third sealing groove located on the outer wall of the lens barrel, wherein a third sealing ring is disposed in the third sealing groove, wherein the fourth sealing structure comprises a fourth sealing groove located on the outer wall of the lens barrel, and wherein a fourth sealing ring is disposed in the fourth sealing groove.

3. The eyepiece adjustment structure of claim 1, wherein the adjustment wheel is provided with an anti-slip pattern on an outer wall thereof.

4. The eyepiece adjusting structure of claim 1, wherein the connecting plate is provided with mounting holes arranged in a ring shape on an end surface of the connecting plate.

5. The eyepiece adjusting structure of claim 1, wherein the eyecup adapter is sleeved on an outer wall of the screw cylinder, and an annular groove is provided on the outer wall of the eyecup adapter.

6. The eyepiece adjusting structure of claim 1, wherein the lens assembly comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged from a head end of the lens barrel to a tail end of the lens barrel along an axial direction of the lens barrel, a backing ring is arranged between the first lens and the second lens, the second lens is bonded with the third lens through glue, and a spacer is arranged between the third lens and the fourth lens.

7. The eyepiece adjustment structure of claim 2, wherein the first, second, third, and fourth seal rings are all O-ring seals.