Abstract A box and lens assembly adapted to store photographic slides and being convertible into an optical viewer for inspecting the slides, each of which is constituted by a transparency mounted in a frame. The assembly comprises a rectangular container dimensioned to accommodate two stacks of slides in side-by-side relationship and a cover hinged thereto. The cover is provided with a peripheral flange having a side section and two end sections which, when the box is closed, lie against the corresponding walls of the container. The cover is fabricated of flexible material whereby the end sections of the flange may be pulled out slightly to define parallel sockets, one of which is usable to engage the lower margin of a slide to be viewed whereby the slide is held erect with its transparency exposed to ambient light. Receivable in the other socket is a Fresnel lens plate having the same dimensions as a slide, the optical characteristics of the plate being coordinated with the spacing between the parallel socket to afford an enlarged, well-focused image of the transparency.
Inventors
👤 R Barbour
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-03 11:43
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
216 words
A box and lens assembly adapted to store photographic slides of standard size, each having a transparency mounted in a frame and being convertible into an optical viewer for inspecting the slides, said assembly comprising: A. a box having a rectangular container dimensioned to accommodate two stacks of slides in side-by-side relation and a cover hinged to one side of said container, said cover being provided with a peripheral flange having a side section and two end sections which, when the box is closed, lie against the corresponding walls of the container, said cover being fabricated of flexible material, whereby the end sections may be pulled out to define parallel sockets, one of which is usable to engage the lower margin of a slide to be viewed whereby the slide is held erect with its transparency exposed to ambient light; and B. a planar lens plate having the same dimensions as a slide, said plate being included in one of said stacks and being formed of transparent plastic material molded to define concentric prismatic rings constituting a Fresnel lens having optical characteristics coordinated with the spacing between said sockets to afford a well-focused image of the transparency being viewed, said plate being insertable into the other socket for viewing and enlarging the image on the transparency.
Claim 2
Dependent Claim
216 words
A box and lens assembly adapted to store photographic slides of standard size, each having a transparency mounted in a frame and being convertible into an optical viewer for inspecting the slides, said assembly comprising: A. a box having a rectangular container dimensioned to accommodate two stacks of slides in side-by-side relation and a cover hinged to one side of said container, said cover being provided with a peripheral flange having a side section and two end sections which, when the box is closed, lie against the corresponding walls of the container, said cover being fabricated of flexible material, whereby the end sections may be pulled out to define parallel sockets, one of which is usable to engage the lower margin of a slide to be viewed whereby the slide is held erect with its transparency exposed to ambient light; and B. a planar lens plate having the same dimensions as a slide, said plate being included in one of said stacks and being formed of transparent plastic material molded to define concentric prismatic rings constituting a Fresnel lens having optical characteristics coordinated with the spacing between said sockets to afford a well-focused image of the transparency being viewed, said plate being insertable into the other socket for viewing and enlarging the image on the transparency.
Claim 3
Dependent Claim
17 words
An assembly as set forth in claim 1, wherein said box is fabricated of flexible plastic material.