Inverted microscope with u-shaped optical path and tubular mounts for objective and relay lens systems

Claim 1

AN INVERTED MICROSCOPE HAVING A U-SHAPED OPTICAL PATH COMPRISING AN ELONGATED HOUSING, A HORIZONTAL STATE ON WHICH A SPECIMEN IS HELD, SAID STAGE BEING OPERATIVELY CARRIED BY SAID HOUSING ADJACENT TO ONE END OF THE UPPER SIDE THEREOF, A MICROSCOPE OBJECTIVE MOUNTED IN VERTICAL ALIGNMENT WITH A FOCUSED ON SAID SPECIMEN A GENERALLY TUBULAR UPRIGHT FRAME MEMBER FIXED IN SAID HOUSING IN OPTICAL ALIGNMENT WITH AN BENEATH SAID OBJECTIVE, MEANS OPERATIVELY CONSTUCTED ON THE TOP OF SAID FRAME MEMBER FOR MOUNTING SAID OBJECTIVE THEREON IN COMMUNICATION WITH THE INTERIOR OF THE MEMBER, A LATERALLY DIRECTED TUBULAR FRAME PART FORMED ON SAID FRAME MEMBER AND OPENING INTO THE UPPER HOLLOW PART OF SAID FRAME MEMBER A LAMP BRACKET CARRIED SAID FRAME MEMBER AND A LAMP MOUNTED THEREON IN ALIGNMENT WITH SAID LATERAL TUBULAR FRAME PART SO THAT LIGHT IS DIRECTED THERETHROUGH A BEAM DIVIDER AND MEANS FOR SUPPORTING THE DIVIDER INCLINEDLY AT THE JUNCTION OF THE AXES OF THE UPRIGHT FRAME MEMBER AND ITS LATERAL TUBULAR PART IN OPTICAL ALIGNMENT WITH SAID OBJECTIVE AND SAID LAMP SO AS TO ILLUMINATE SAID SPECIMEN EPISCOPICALLY, MEANS FORMING A SIDE OPENING IN THE LOWER PART OF SAID FRAME MEMBER A FIRST PLANE MIRROR, MEANS FOR MOUNTING SAID MIRROR IN A POSITION SUBSTANTIALLY 45 DEGREES TO THE AXIS OF SAID OBJECTIVE AND IN HORIZONTAL ALIGNMENT WITH SAID SIDE OPENING SO AS TO DEVIATE INCIDENT IMAGE RAYS ALONG A HORIZONTAL PORTION OF OPTICAL AXIS WHEREON A PRIMARY IMAGE IS FORMED BY THE OBEJECTIVE,