Abstract:
Photographic binoculars include binoculars and a tube with a camera detachably connected to the tube. A focus adjusting mechanism of the binoculars correspond to a focus adjusting mechanism of the tube so that the adjustment to the focal length of the binoculars simultaneously adjusts the focal length of the tube. The camera is able to record an image of a subject observed from the binoculars.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to photographic binoculars, and more particularly to binoculars attached with a third tube and a photographic device. The focus of the third tube is adjustable along with the focus of the binoculars so that a user is able to record the image directly by the photographic device after observing from the binoculars. 
     2. Description of Related Art 
     When a user is watching and observing wild life in a country site, normally the user carries binoculars for that purpose. For those who do research on wild life, binoculars seem not sufficient to accomplish the goal. Photographing or filming the wild life is the best solution for research. In order to achieve this purpose, the user will have to bring along not only binoculars, but also am image recording device so that after the user finds an interesting subject, the user is able to use the image recording device to film or photograph the subject. However, while observing the subject, the user focuses the lenses of the binocular to have a good and clear look at the subject. After the user decides to record the subject and takes out the image recording device, the user will still have to focus the image recording device again, which is quite time consuming and labor inefficient. 
     To overcome the shortcomings, the present invention tends to provide improved binoculars to mitigate and obviate the aforementioned problems. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is to provide binoculars with an image recording device connected to the binoculars so that whatever the user sees from the binoculars, the user is able to use the image recording device to record the image of the observed subject. 
     Another objective of the present invention is that the focus adjusting mechanism of the binoculars is linked to the focus adjusting mechanism of the image recording device so that when the user adjusts the focus of the binoculars, the focus of the image recording device is also adjusted and is ready to take pictures. 
     Still another objective of the present invention is to have a cable extending out from the image recording device to allow the user to transmit the picture electronically. 
    
    
     Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the photographic binoculars of the present invention; 
     FIG. 2 is an exploded perspective view of the binoculars in FIG. 1; 
     FIG. 3 is a cross sectional view of the engagement between the adjusting knob and the driven plate; 
     FIG. 4 is a partial cross sectional view of the focus adjusting mechanism of the binoculars of the present invention; 
     FIG. 5 is a partial cross sectional view of the focus adjusting mechanism of the image recording device of the present invention; 
     FIG. 6 is a side plan view of the first relative positions of the lenses in the binoculars and the image recording device; 
     FIG. 7 is a side plan view of the second relative positions of the lenses in the binoculars and if the image recording device; and 
     FIG. 8 is a perspective view showing another embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     With reference to FIGS. 1 and 2, a photographic binoculars ( 1 ) in accordance with the present invention has a pair of binoculars ( 10 ) and an image recording device ( 20 ). 
     The structure of the binoculars ( 10 ) of the present invention is basically the same as a conventional binocular. That is, the binoculars ( 10 ) has a first tube ( 11 ) and a second tube ( 12 ) securely connected to the first tube ( 11 ) by a connecting bridge ( 13 ) with an adjusting knob ( 14 ) pivotally received inside the connecting bridge ( 13 ). A link ( 15 ) is provided between the first and second tubes ( 11 ,  12 ) and is movable relative to the connecting bridge ( 13 ). 
     With reference to FIG.  3  and still taking FIG. 2 for reference, the connecting bridge ( 13 ) has a hole ( 131 ) defined inside the connecting bridge ( 13 ) to receive therein a threaded bolt ( 132 ) which is securely engaged with the adjusting knob ( 14 ) such that when the adjusting knob ( 14 ) is pivoted, the threaded bolt ( 132 )is driven to rotate. The threaded bolt ( 132 ) extends into a threaded through hole ( 151 ) defined in the link ( 15 ), such that when the adjusting knob ( 14 ) pivots, the link( 15 ) moves relative to the connecting bridge ( 13 ). Because the focus adjusting mechanism of the first and second tubes ( 11 ,  12 ) of the binocular first tube ( 11 ) is the same, only one side of the focus adjusting mechanism is explained hereinafter. With reference to FIG. 4, because a lip ( 152 ) is formed on a side face of the link ( 15 ) and extends into a first inner tube ( 110 ) which is slidably received in the first tube ( 11 ) to securely engage with the first inner tube ( 110 ), when the adjusting knob ( 14 ) is pivoted and the link ( 15 ) moves, the first inner tube ( 110 ) is also moved. With such an arrangement, when the user adjusts the adjusting knob ( 14 ), with the provision of the link ( 15 ), the focus of the binoculars ( 10 ) is adjusted. 
     With reference to FIG.  5  and still taking FIG. 2 for reference, the binoculars ( 10 ) further have a driving rod ( 16 ) with a head ( 161 ) extending into the threaded through hole ( 151 ) of the link ( 15 ) to securely connect the driving rod ( 16 ) to the link ( 15 ). The driving rod ( 16 )has an arcuate recess ( 162 ) defined in a bottom face of the driving rod ( 16 ). The image recording device ( 20 ) of the photographic binoculars ( 1 ) of the present invention has a third tube ( 21 ) with a driven rod ( 211 ) movably received in an elongated hole ( 212 ) in a face of the third tube ( 21 ) of the image recording device ( 20 ). The driven rod ( 211 ) corresponds to the arcuate recess ( 162 ) of the driving rod ( 16 ) so that a free end of the driven rod ( 211 ) is able to rest in the arcuate recess ( 162 ), whereby the movement of the link ( 15 ) also drives the driven rod ( 211 ) to move in the same direction. Moreover, the third tube ( 21 ) has a sleeve ( 22 ) slidably received in the third tube ( 21 ) and having a third lens ( 221 ) securely received in the sleeve ( 22 ). The driven rod ( 211 ) is securely engaged with the sleeve ( 22 ), such that when the driven rod ( 211 ) is moved due to the movement of the driving rod ( 16 ), the sleeve ( 22 ) as well as the lens ( 221 ) also moves in the third tube ( 21 ). 
     With reference to FIGS. 6,  7  and still taking FIG. 2 as a reference, after the introduction of the foregoing interrelationship of the focus adjusting mechanism between the binocular ( 10 ) and the image recording device ( 20 ), when the user pivots the adjusting knob ( 14 ), the pivotal movement of the threaded bolt ( 132 ) drives the link ( 15 ) to move. As the link ( 15 ) moves, due to the secure engagement of the driving rod ( 16 ) wit 6 h the link ( 15 ), the driving rod ( 16 ) also moves along with the link ( 15 ). Because the driven rod ( 211 ) rests in the arcuate recess ( 162 ) in the driving rod ( 16 ), the driven rod ( 211 ) is driven by the driving rod ( 16 ) to move in the same direction as that of the driving rod ( 16 ). As previously described, the first tube ( 11 ) has the first lens ( 111 ) securely received in the first inner tube ( 110 ). The second tube ( 12 ) also has a second lens ( 121 ) securely received in a second inner tube (not shown) and the third tube ( 21 ) has the third lens ( 221 ) securely received in the sleeve ( 22 ) such that when the adjusting knob ( 14 ) is pivoted, the first lens ( 111 ), the second lens ( 121 ) and the third lens ( 221 ) will move simultaneously in the same direction. With such an arrangement, the adjustment to the focus of the binoculars ( 10 ) also accomplishes adjustment of the focus of the third tube ( 21 ). From the appendix drawing of FIG. 2, the image recording device ( 20 ) has not only the third tube ( 21 ), but also a camera ( 23 ) with the third tube ( 21 ) detachably connected to the front of the camera ( 23 ). Furthermore, the camera ( 23 ) may also be a digital camera with a cable ( 231 ) extending out so that the user is able to transmit the captured image with the digital camera electronically.