Portable optical magnifying device
OwnerBarry Thomas Reynoldsinventor
Life of this patent
Estimating the term…
Abstract
A portable optical magnifying device (1), for observing specimens within a specimen-vessel having a transparent flat wall, comprises an eyepiece (4) and an objective (3), a light-path being defined therebetween. The device (1) includes a spacer (7) arranged at least partly around the objective (3) and which is adapted in use to seat the device (1) against the flat wall of the specimen vessel with the objective (3) closely adjacent but spaced therefrom, and with its optical axis normal thereto. The device (1) further includes means (9) for releasably attaching the device (1) to the flat wall, with the space (7) bearing against the flat wall of the specimen vessel. Attachment is achieved by evacuation of the space between objective lens, spacer and flat wall.
Claims12
A portable optical magnifying device for observing specimens within a specimen-vessel having a transparent flat wall, said device having an eyepiece and an objective and comprising:
- a substantially tubular, telescopically-tapered and axially-adjustable housing;
- a further optical array provided within said housing, said array comprising an aperture and at least one lens;
- an evacuation chamber created between the objective and an open end of said tubular housing, said open end being provided with a substantially air-tight seal;
- and
- evacuation means located externally on the housing, said evacuation means communicating with said chamber such that, when activated, said chamber is partially-evacuated, thus allowing the magnifying device to be detachably mounted by suction on said flat wall.
Dependencies are inferred from the claim text.