Abstract:
An additional knurled ring for an optical lens is composed of an annular portion and teeth distributed in a radial direction around the outside of the annular portion. The inner diameter and shape of the additional knurled ring match the outer diameter and shape of an adjusting ring of the optical lens. The additional knurled ring is movably connected with the outside of the adjusting ring of the optical lens. Since the additional knurled ring for the optical lens can be extended towards the front of the lens and beyond the front end of the optical lens, the interference of stray light with the imaging of the optical lens is blocked. Digital scale designations are engraved or printed on the outside of the additional knurled ring for optical lens, the position of the scale and the values of the designations are corresponding to the focal length, aperture, and focal range information of the optical lens. The front end with the enlarged outside diameter of the additional knurled ring for optical lens is movably connected with a cap, and the shape and size of the cap matches the shape and size of the front end of the additional knurled ring.

Description:
NOTICE OF COPYRIGHT 
       [0001]    A portion of the disclosure of this patent document contains material which is subject to copyright protection. The copyright owner has no objection to any reproduction by anyone of the patent disclosure, as it appears in the United States Patent and Trademark Office patent files or records, but otherwise reserves all copyright rights whatsoever. 
       BACKGROUND OF THE PRESENT INVENTION 
       [0002]    1. Field of Invention 
         [0003]    The present invention relates to an additional knurled ring, and more particular to an additional knurled ring for optical lens adapted for incorporated with different kinds of optical adjusting rings. 
         [0004]    2. Description of Related Arts 
         [0005]    Nowadays, a conventional optical camera doesn&#39;t not include a knurled ring, so that it cannot be incorporated with optical adjusting assistance equipment which are a follow focus of the file lens and a converter. Therefore, the conventional optical camera has the capability and equipment for utilizing manual focus and autofocus to efficiently and precisely to adjust the optical lens of the conventional optical camera. In particular, while the digital conventional optical camera is utilized for shooting, the image shake, focus retardation, and noise generation from autofocus are common problems for the digital conventional optical camera so as to dramatically affect the quality of the images. 
       SUMMARY OF THE PRESENT INVENTION 
       [0006]    A main object of the present invention is to provide an additional knurled ring for an optical lens that is movably connected to the outside of optical adjusting rings so as to overcome the problems of image shake, focus retardation, and noise generation from autofocus. In other words, the additional knurled rings provides the capability to incorporate adjustment assistance equipment, such as a follow focus of the file lens and a converter for producing stabilized images, quick focusing, and zero-noise. 
         [0007]    Another object of the present invention is to provide an additional knurled ring for an optical lens, wherein the additional knurled ring comprises an annular portion and ring tooth radially distributed along the annular portion. The specification of the ring tooth include but is not limited to 0.8 modulus, and the inner diameter and shape of the additional knurled ring match the outer diameter and shape of the optical adjusting ring, such that the additional knurled ring movably connects to the outside of the optical adjusting ring. 
         [0008]    Another object of the present invention is to provide an additional knurled ring for an optical lens, wherein the additional knurled ring for optical lens can be extended and enlarged towards the front of the optical lens and exceed the front end of the optical lens, such that the interference of the stray light for images from optical lens are blocked. 
         [0009]    Another object of the present invention is to provide an additional knurled ring for an optical lens, wherein a digital scale designation are engraved or printed on the outside of the additional knurled ring for optical lens, and the position of the scale and the value of the designation are corresponding to the value of the focal length, aperture, and focal range information for the optical lens. 
         [0010]    Another object of the present invention is to provide an additional knurled ring for an optical lens, wherein a cap is movably connected to the front and enlarged end of the additional knurled ring of optical lens for protecting the additional knurled ring and the optical lens, and the diameter and shape of the cap match with the diameter and shape of the front and enlarged end of the additional knurled ring of the optical lens. 
         [0011]    Additional advantages and features of the invention will become apparent from the description which follows, and may be realized by means of the instrumentalities and combinations particular point out in the appended claims. 
         [0012]    Accordingly, in order to achieve the above objects, the present invention provides a camera, comprising: 
         [0013]    a camera body; 
         [0014]    an optical lens connected to said camera body comprising at least one of optical adjusting rings; and 
         [0015]    at least one of additional knurled ring movably connected on the outside of said optical adjusting rings. 
         [0016]    Still further objects and advantages will become apparent from a consideration of the ensuing description and drawings. 
         [0017]    These and other objectives, features, and advantages of the present invention will become apparent from the following detailed description, the accompanying drawings, and the appended claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0018]      FIG. 1  shows a side view of an additional knurled ring for optical lens according to a first preferred embodiment of the present invention. 
           [0019]      FIG. 2  shows a front view of an additional knurled ring for optical lens according to a second preferred embodiment of the present invention. 
           [0020]      FIG. 3  shows a side view of an additional knurled ring for optical lens according to a third preferred embodiment of the present invention. 
           [0021]      FIG. 4  shows an A-A sectional view of an additional knurled ring for optical lens according to a third preferred embodiment of the present invention. 
           [0022]      FIG. 5  shows an A-A sectional view of an additional knurled ring for optical lens according to a fourth preferred embodiment of the present invention. 
           [0023]      FIG. 6  shows an A-A sectional view of an additional knurled ring for optical lens according to a fifth preferred embodiment of the present invention. 
           [0024]      FIG. 7  shows a front view of an additional knurled ring for optical lens according to a sixth preferred embodiment of the present invention. 
           [0025]      FIG. 8  shows a front view of an additional knurled ring for optical lens according to a seventh preferred embodiment of the present invention. 
           [0026]      FIG. 9  shows a side view of an additional knurled ring for optical lens according to an eighth preferred embodiment of the present invention. 
           [0027]      FIG. 10  shows a side view of an additional knurled ring for optical lens according to an ninth preferred embodiment of the present invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0028]    Referring to  FIG. 1  of the drawings, an additional knurled ring for an optical lens according to a first preferred embodiment of the present invention is illustrated, wherein a camera comprises a camera body  1  connected to optical lens  2 , at least one of additional knurled rings that is shown herein as a first additional knurled ring  6 , a second additional knurled ring  7 , and a third additional knurled ring  8 , and at least one of the optical adjusting rings that is a focal length adjusting ring  3 , a zoom ring  4 , and a aperture adjusting ring  5 , wherein the first additional knurled ring  6  is movably connected with the outside of the focal length adjusting ring  3 , wherein the second additional knurled ring  7  is movably connected with the outside of the zoom ring  4 , and the third additional knurled ring  8  is movably connected with the outside of the aperture adjusting ring  5 . The inner diameter and shape of the first additional ring  6  match the outer diameter and shape of the focal length adjusting ring  3 , and the inner diameter and shape of the second additional knurled ring  7  match the outer diameter and shape of the zoom ring  4 . In other words, the inner diameter and shape of the third additional knurled ring  8  match the outer diameter and shape of the aperture adjusting ring  5 . 
         [0029]    Referring to  FIG. 2  of the drawings, an additional knurled ring for an optical lens according to a second preferred embodiment of the present invention is illustrated, wherein a camera comprises a camera body  1 ′ movably connected to a follow focus  9  via a camera track  13 , a follow focus gear  11  in contact with a first additional knurled ring  6 ′, and a handgrip  10  adapted for being rotated so as to linkedly drive the follow focus gear  11  and the first additional knurled ring  6 ′, in such manner that a focal length adjusting ring  3 ′ can be adjusted. In other word, the handgrip  10  is able to be rotated so as to drive the follow focus gear being rotated to linkedly drive to rotate the first additional knurled ring  6 ′. 
         [0030]      FIG. 3  shows a side view of an additional knurled ring for an optical lens according to a third preferred embodiment of the present invention, wherein a camera comprises a camera body  1 ″ connected to an optical len  2 ″, a first additional knurled ring  6 ″ movably connected with the outside of a focal length adjusting ring  3 ″, a second additional knurled ring  7 ″ movably connected with the outside of a zoom ring  4 ″, and a third additional knurled ring  8 ″ movably connected with the outside of a aperture adjusting ring  5 ″. The inner diameter and shape of the first additional ring  6 ″ match the outer diameter and shape of the focal length adjusting ring  3 ″, and the inner diameter and shape of the second additional knurled ring  7 ″ match the outer diameter and shape of the zoom ring  4 ″. In other words, the inner diameter and shape of the third additional knurled ring  8 ″ match the outer diameter and shape of the aperture adjusting ring  5 ″. The camera further comprises at least one of first screws  17  adapted for moveably connecting the first knurled ring  6 ″ and the focal length adjusting ring  3 ″, at least one of second screws  18  adapted for moveably connecting the second additional knurled ring  7 ″ and the zoom ring  4 ″, and at least one of third screws  19  adapted for movably connecting the third additional knurled ring  8 ″ and the aperture adjusting ring  5 ″. Moreover, the first additional knurled ring  6 ″ comprises a front annular portion, front tooth  15  arranged at the front annular portion, a rear annular portion, and rear tooth  14  arranged on the rear annular portion, wherein the outer diameter of the front annular portion and the quantity of the front tooth  15  doesn&#39;t match the outer diameter of the rear annular portion and the quantity of the rear tooth  14 , which is capable of adjusting different velocities and accuracies for the first additional knurled ring  6 ″ based on the actual needs. The first additional knurled ring  6 ″ further comprises a first digital scale designation  20  engraved or printed on the outside of the first additional knurled ring  6 ″, wherein the position of the scale and the value of the designations for the first digital scale designation  20  are corresponding to the value of the focal length of the optical lens. The third additional knurled ring  8 ″ comprises a second digital scale designation  16  engraved or printed on the outside of the third additional knurled ring  8 ″, wherein the position of the scale and the value of the designations for the second digital scale designation  16  are corresponding to the value of the focal range information of the optical lens. It is worth mentioning that a camera further comprises a cap  21  movably connected on the front enlarged end of the first additional knurled ring  6 ″ of the optical lens, and the shape and size of the cap  21  match the front enlarged end of the first additional knurled ring  6 ″. 
         [0031]      FIG. 4  shows an A-A sectional view of the above third preferred embodiment of the present invention, wherein a camera comprises a first additional knurled ring  6 ″ movably connected with the outside of a focal length adjusting ring  3 ″, a second additional knurled ring  7 ″ movably connected with the outside of a zoom ring  4 ″, and a third additional knurled ring  8 ″ movably connected with the outside of a aperture adjusting ring  5 ″. The inner diameter and shape of the first additional ring  6 ″ match the outer diameter and shape of the focal length adjusting ring  3 ″, and the inner diameter and shape of the second additional knurled ring  7 ″ match the outer diameter and shape of the zoom ring  4 ″. In other words, the inner diameter and shape of the third additional knurled to ring  8 ″ match the outer diameter and shape of the aperture adjusting ring  5 ″. The camera further comprises at least one of first screws  18  adapted for moveably connecting the first additional knurled ring  6 ″ and the focal length adjusting ring  3 ″, at least one of second screws  19  adapted for moveably connecting the second additional knurled ring  7 ″ and the zoom ring  4 ″, and at least one of third screws  19  adapted for movably connecting the third additional knurled ring  8 ″ and the aperture adjusting ring  5 ″. Moreover, the first additional knurled ring  6 ″ comprises a front annular portion, front tooth  15  arranged on a front annular portion, a rear annular portion, and rear tooth  14  arranged at the rear annular portion, wherein the outer diameter of the front annular portion and the quantity of front tooth  15  don&#39;t match the outer diameter of the rear annular portion and the quantity of rear tooth  14 , which is capable of adjusting different velocities and accuracies for the first additional knurled ring  6 ″ based on the actual needs. It is worth mentioning that a camera further comprises a cap  21  movably connected on the front enlarged end of the first additional knurled ring  6 ″ of the optical lens, and the shape and size of the cap  21  matches the front enlarged end of the first additional knurled ring  6 ″. 
         [0032]    As shown in  FIG. 5 , an additional knurled ring for an optical lens according to a fourth preferred embodiment of the present invention is illustrated, which is an alternative mode of an additional knurled ring for the optical lens of the third preferred embodiment. The camera comprises a second additional knurled ring  7 ′″ movably connected with the outside of a zoom ring  4 ′″ and at least one of second screws  18 ′″ adapted for fixedly connected the second additional knurled ring  7 ′″ and the zoom ring  4 ′″. Due to the relative position of the second additional knurled ring  7 ′″ and the second screws  18 ′, the position of the axis for the zoom ring  4 ′″ remains the same as the position of the axis for the second additional knurled ring  7 ′″. 
         [0033]      FIG. 6  shows a sectional view of a fifth preferred embodiment of the present invention. The camera comprises a flexible ring  22  sandwichedly arranged between a second additional knurled ring  7 ″″ and a zoom ring  4 ″″. In other words, the second additional knurled ring  7 ″″ is arranged on outside of the flexible ring  22 , and the flexible ring  22  is arranged on outside of the zoom ring  4 ″″. The camera further comprises at least one of second screws  18 ″″, in such manner that the second additional knurled ring  7 ″″ is fixedly connected to the flexible material and the zoom ring  4 ″″ via the second screws  18 ″″. Due to the relative position of the second additional knurled ring  7 ″″ and the second screws  18 ″″, the position of the axis for the zoom ring  4 ″″ remains the same as the position of the axis for the second additional knurled ring  7 ″″. Therefore, the flexible ring  22  is able to protect the zoom ring  4 ″″ so as to increase the friction force between the second additional knurled  7 ″″ and the zoom ring  4 ″″. 
         [0034]    As shown in  FIG. 7 , an additional knurled ring for an optical lens according to a sixth preferred embodiment of the present invention is illustrated, wherein the camera comprises an additional knurled ring  23  which comprises a rack  24  made of flexible materials and a connection component  27  adapted for connecting the rack  24 . The connection component  27  comprises a pin  28 , a serrated slot  29 , and a handle  30 . The rack  24  comprises a front opening end  26  and a pin hole  25  arranged on the rear opening end of the rack  24 . In such manner, the front opening end  26  of the flexible rack  24  is wedged into the serrated slot  29  of the connection component  27 , and the pin  28  of the component  27  is inserted into the pin hole  25  of the flexible rack  24  so as to form a closed additional knurled ring  23 . Therefore, the relative position of the front opening end  26  of the flexible rack  24  and the serrated slot  29  of the connection component  27  can be adjusted to change the diameter of the additional knurled ring  23  in order to match different diameters and functions of optical adjusting rings. 
         [0035]    As shown in  FIG. 8 , an additional knurled ring for optical lens according to a seventh preferred embodiment of the present invention is illustrated, wherein the camera comprises an additional knurled ring  31  having an opening which comprises two ends that one end of the opening has a first protruded portion  32 , and the other end of the opening has a second protruded portion  33 . Each of the protruded portions is integrally extended from the additional knurled ring  31  and vertical to the surface of the optical lens. The camera further comprises a screw  35 ; a front end of the screw  36 , and a nut  34 , as well as that two through holes is arranged respectively on the first protruded portion  32  and the second protruded portion  33 . Therefore, the front end of the screw  36  is parallelly passing through two through holes respectively which are arranged respectively on the first protruded portion  32  and the second protruded portion  33 , such that the relative position of the screw  35  and the nut  34  can be adjusted to change the diameter of the additional knurled ring  31 . 
         [0036]    As shown in  FIG. 9 , an additional knurled ring for optical lens according to an eighth preferred embodiment of the present invention is illustrated. The camera comprises a camera body  1 ′″ connected with an optical len  2 ′″, a second additional knurled ring  8 ′″″ movably connected to outside of the zoom adjusting ring  4 ′″″, a detachable knurled ring  38 , and teeth  39  arranged on outside of the detachable knurled ring  38 . The detachable knurled ring  38  is backwardly and narrowly extended to form a protruded rear end  40  which comprises an outside screw thread on the outside of the protruded rear end  40 . In addition, a front end  37  of the optical lens  2 ′″ has an inside screw thread, such that the detachable knurled ring  38  movably connects with the optical lens  2 ′″ via the connection between the outside screw thread of the detachable knurled ring  38  and the inside screw thread of the optical lens  2 ′″. Therefore, the diameter and shape of the protruded rear end  40  of the detachable knurled ring  38  matches the diameter and shape of the front end  37  of the optical lens  2 ′″. 
         [0037]    As shown in  FIG. 10 , an additional knurled ring for optical lens according to a ninth preferred embodiment of the present invention is illustrated, which is an alternative of the eighth preferred embodiment, wherein the camera comprises a camera body  1 * connected with an optical len  2 *, a second additional knurled ring  8 * movably connected to outside of the zoom adjusting ring  4 *, a detachable knurled ring  38 *, and tooth  39 * arranged on outside of the second additional knurled ring  38 *. The detachable knurled ring  38 * is backwardly and narrowly extended to form a protruded rear end  41  which comprises an inside buckle  43  arranged on the inside of the protruded rear end  41 . In addition, a front end  37 * of the optical lens  2 * has an outside buckle  42  arranged on the outside of the front end  37 * of the optical lens  2 *, such that the detachable knurled ring  38 * movably connects with the optical lens  2  via the connection between the inside buckle of the detachable knurled ring  38 * and the outside buckle of the front end  37 * of the optical lens  2 *. Therefore, the diameter and shape of the protruded rear end  41  of the detachable knurled ring  38 * match the diameter and shape of the front end  37 * of the optical lens  2 *. 
         [0038]    One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting. 
         [0039]    It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.