Patent ID: 6778261
Filing Date: 2004-08-17
Classification: G03B

Abstract:
A film fixing instrument for fixing films with different scales, said film fixing instrument comprising:a loader for loading a film, said loader having a loader window for transmitting light and having a plurality of couplers disposed around said window, said window being bounded by four adjoining sides, including a one side, an other side opposite to the one side, and two further sides opposite to each other and joining the one and the other sides; a removable and reversible adjuster having a surface for covering part of said window and having a plurality of fixers for coupling with said plurality of couplers, said adjuster selectively installed on, or removed from said loader to adjust said window; wherein said adjuster has an upper edge, a lower edge, a first side edge and a second side edge, said upper edge is opposite to said lower edge, said first side edge is opposite to said second side edge, said plurality of fixers are on said upper edge and said lower edge, and the distance of said first side edge to said plurality of fixers is larger than the distance of said second side edge to said plurality of fixers, wherein said adjuster is coupled with said loader by arranging said first side edge adjacent to the one side of said window, said second side edge intersects the two further sides of said window so that said second side edge, the two further sides of said window, and the other side of said window define a first light-transmissive area for allowing a film of a first scale to be fixed on said film fixing instrument, wherein when said adjuster is reversed and coupled with said loader by arranging said second side edge adjacent to the one side of said window, said first side edge intersects the two further sides of said window so that said first side edge, the two further sides of said window, and the other side of said window define a second light-transmissive area, different than said first light-transmissive area, for allowing a film of a second scale to be fixed on said film fixing instrument, and wherein when said adjuster is removed and not coupled with said loader, said four adjoining sides of said window define a third light-transmissive area, different than said first light-transmissive area or said second light-transmissive area, for allowing a film of a third scale to be fixed on said film fixing instrument.