Abstract:
An optical apparatus for photographic or videographic uses may include an optical lens configured to affect light passing therethrough. The optical apparatus may also include a handle mechanism attached to the filter and configured to be held by a user to position the filter in front of a camera lens.

Description:
BACKGROUND 
       [0001]    1. Field 
         [0002]    This present disclosure relates to the field of optical filters for photographic and videographic creation. These filters may be placed in front of the exterior-facing element of a photographic or videographic lens. 
         [0003]    2. Description of the Related Art 
         [0004]    There are many known devices used today as filters to be placed in front of the exterior-facing element of a photographic or videographic lens. The purpose of these filters runs the gamut: from stopping or slowing down the light that enters the lens; to changing the color of light as it enters the lens; to achieving prismed optical effects achieved in the glass. These filters are typically screwed in to the exterior-facing element of a photographic or videographic lens, but in certain situations are supplemented with harnesses which allow the filters to sit in a fixed-position at a predetermined distance in front of the lens. 
         [0005]    These filters are limiting to a large extent. Photographic and videographic filters generally house transparent glass which—much like most other polished glass—has reflective properties. By either being screwed onto the lens or by being stuck in a fixed position in front of the lens, the glass inside the filter limits the user to only providing a fixed optical effect. 
         [0006]    The disclosed filter assembly is directed to overcoming one or more of the problems set forth above. 
       SUMMARY 
       [0007]    According to an aspect, a filter assembly for photographic and videographic purposes includes a housing apparatus, inside which a piece of glass sits. 
     
    
     
       BRIEF DESCRIPTION OF THE VIEWS OF THE DRAWINGS 
         [0008]      FIG. 1  is a front view showing a filter assembly according to an embodiment; 
           [0009]      FIG. 2  is an exploded perspective view of the filter assembly of  FIG. 1 , showing a polarizing inner-ring separated from a main housing unit, and a glass filter further exploded from the polarizing inner-ring; 
           [0010]      FIG. 3  is an exploded side view of the filter assembly of  FIG. 1 , showing the polarizing inner-ring separated from the main housing unit; 
           [0011]      FIG. 4  is an exploded perspective view of the filter assembly of  FIG. 1  with a mounting arm and a camera; 
           [0012]      FIG. 5  is a side view of the filter assembly of  FIG. 1  mounted to the mounting arm, which is mounted to the top of the camera; and 
           [0013]      FIG. 6  is a side view of the filter assembly of  FIG. 1  mounted to the mounting arm, which is mounted to the bottom of the camera. 
       
    
    
     DETAILED DESCRIPTION 
       [0014]      FIG. 1  shows a front view of an embodiment of the filter assembly  1  in an assembled state. The filter assembly  1  may include a main housing unit  21 , a handle mechanism that attaches to or is integral with the main housing unit  21 , and one or more mounting holes  15 . The mounting holes  15  may to be provided to allow a user to mount the filter assembly  1  in a free position in front of a lens  31  of a camera  30  ( FIG. 4 ), such as a photographic or videographic camera, using a freely articulating mounting arm  5  ( FIGS. 4-6 ), as described in more detail below. The filter assembly  1  is designed to therefore either be free-handed in front of the user&#39;s lens  31  or to be mounted in a free position giving the user full control of the angular position of the filter assembly  1  relative to the lens  31 . 
         [0015]    The handle mechanism may fit into the user&#39;s hand and may include finger holes  10  to allow the user to grip the handle mechanism. This provides the advantage of being able to allow the user to move the filter assembly  1  up-down, side-to-side, or in any other direction, thereby allowing the user to manipulate the angle at which a glass filter  29  inside the filter assembly  1  is positioned with respect to an exterior-facing element (e.g., the frontmost element of the lens  31 ) of the photographic or videographic lens  31 . This free motion may give the user the ability to manipulate the direction of the light (image) as it reflects through the filter assembly  1  and enters the camera  30 . This produces an optical effect that the user may adjust and control. Conventional fixed-position filters may not allow this type of control. 
         [0016]      FIG. 2  shows an exploded view of the filter assembly  1 . The filter assembly  1  may further include a polarizing inner-ring  25  which may be rotated with respect to the main housing unit  21  as the filter assembly  1  sits in the user&#39;s hand or on the mount, e.g., using the mounting arm  5  ( FIGS. 4-6 ). The polarizing inner-ring  25  forms a snapping mechanism that allows the polarizing inner-ring  25  to sit inside the main housing unit  21 . For example, the polarizing inner-ring  25  may include a protrusion  26  ( FIG. 3 ) that snaps into a groove  23  in the inner-most face of the main housing unit  21 . When attached, the engagement of the protrusion  26  in the groove  23  allows the polarizing inner-ring  25  to rotate freely with respect to the main housing unit  21 , while preventing the polarizing inner-ring  25  from falling out of the main housing unit  21 . The polarizing inner-ring  25  would have to be snapped out of the groove  23  to detach the polarizing inner-ring  25  from the main housing unit  21 . The glass filter  29  may be shaped with multiple facets and may act as a prism to achieve the optical effects. The glass filter  29  may be locked into the polarizing inner-ring  25 , e.g., with an adhesive. 
         [0017]    As a result, the filter assembly  1  allows the glass filter  29  to move freely in front of the photo or videographic camera lens  31 , thereby providing a changing optical effect. Being able to move the filter assembly  1  freely in front of the photo or videographic camera lens  31  provides the user with the ability to exploit the reflective properties of the glass filter  29  to create artistic optical effects. 
         [0018]      FIG. 3  shows an exploded side profile of the filter assembly  1 . The front portion of the polarizing inner-ring  25  may extend forward from the main housing unit  21 . This extruded front portion on the polarizing inner-ring  25  may be formed withextruding bumps  26  that may allow easier gripping of the polarizing inner-ring  25  with the user&#39;s fingers to allow the user to rotate the polarizing inner-ring  25 , and thus also the glass filter  29 , as the polarizing inner-ring  25  sits within the main housing unit  21 . 
         [0019]      FIG. 4  shows an exploded view of the filter assembly  1  for mounting on the mounting arm  5 . In a manner similar to the snap-in mechanism that allows attachment and detachment of the polarizing inner-ring  25  from the main housing unit  21 , the mounting arm  5  may have one or more small stubs  6  (e.g., a circular stub), which may snap into the mounting holes  15  in the main housing unit  21  by applying a small amount of pressure with the user&#39;s fingers. The mounting arm  5  may be snapped out of the mounting holes  15  for detachment in the same way. This snap-in mechanism may be used to mount the filter assembly  1  to the mounting arm  5 . The mounting arm  5  may be made of a flexible material such as copper, which may be molded into various shapes. Once shaped by the user, the mounting arm  5  may remain fixed with the same shape until further changed by the user. This may allow the filter assembly  1  to rotate, or move up-down, side-to-side, or in any other direction, and also to remain in the position set by the user in front of the exterior-facing element of the photographic or videographic lens  31 . 
         [0020]    The mounting arm  5  may have a mounting arm hotshoe  8  that allows the user to place flashes or other hotshoe controlled devices on top of the mounting arm  5 . The mounting arm  5  may include an end unit that includes an adapter  9  that mount to the camera  30  by sliding the adapter  9  into a hotshoe  32  provided on the camera  30 . Photographers and videographers may still want access to the hotshoe  32 , which the mounting arm  5  may block when connected to the hotshoe  32 . Therefore, the mounting arm hotshoe  8  may act as a ‘pass-through’ which allows photographers and videographers to retain full access to the hotshoe  32  while using the mounting arm  5 . Thus, the mounting arm  5  may be mounted on top of the camera  30  by connecting the adapter  9  on the bottom of the end unit to the hotshoe  32 . 
         [0021]    Alternatively, as shown in  FIG. 5 , the mounting arm  5  may be mounted on top of the camera  30  by using a mounting screw  7  that sits atop the end unit that includes the adapter  9 . The mounting screw  7  may be a standardized screw that may engage with a screw hole on top of the camera  30 , thereby allowing the user to mount the mounting arm  5  onto the camera  30  without using the hotshoe  32 . In traditional DSLR cameras, this type of screw may be provided on the bottom of the camera  30 . The mounting screw  7  may be useful for cameras that do not have a native hotshoe  32 , like smaller cameras or video cameras.  FIG. 6  shows that the mounting arm  5  may also be mounted on the bottom of the camera  30  by using the mounting screw  7  on the mounting arm  5 . Thus, the mounting arm  5  may be mounted to the top or the bottom of the camera  30 . The functionality of the two configurations is relatively similar; but users may have a preference between the two. 
         [0022]    Although this description contains some significant detail, it should not be construed as limiting the scope of the invention but rather as providing illustrations of the preferred embodiments of the invention. For example, an alternative handle mechanism may be used in place of finger holes  10 , such as a grip or a strap that attaches to the main housing unit  21 . The finger holes  10  offer several advantages. The finger holes  10  may allow the handle mechanism to be smaller than other handle mechanisms, which may add convenience to the filter assembly  1  as smaller objects are easier to carry around. A smaller handle mechanism is also preferred because it may be less obtrusive while using the filter assembly  1  for photographic or videographic purposes. The finger holes  10  may wrap around the user&#39;s fingers, making it less likely that the user will drop and damage the filter assembly  1 . Also, the main housing unit  21  may take a number of different shapes and is not limited to being circular.