THROUGH-THE-LENS (TTL) LOUPES WITH IMPROVED DECLINATION ANGLE

• US 20150146290A1
• Filed: 11/26/2014
• Published: 05/28/2015
• Est. Priority Date: 11/27/2013
• Status: Active Grant

• Current Assignee: General Scientific Corporation (VISTA Information Technologies, Inc.)
• Original Assignee: General Scientific Corporation (VISTA Information Technologies, Inc.)
• Inventors: Chang, Byung J.
• Granted Patent: US 9,465,235 B2
• Time in Patent Office: Days
• US Class Current: 359/481
• CPC Class Codes: G02B 25/00 Eyepieces; Magnifying glasses
• CPC Class Codes: G02C 7/088 Lens systems mounted to spectacles

Abstract

Dental/medical/surgical loupes have an improved declination angle to reduce neck and back strain. Eyeglass frames are provided with carrier lenses having bottom edges. A hole is provided in each carrier lens, each hole having an outer periphery that extends below the bottom edge of the carrier lens, resulting in a pair of opposing pointed ends. A pair of ocular devices are cemented in a respective one of the holes, such that a portion of the ocular body also extends below the bottom edge of the carrier lens. Each ocular is then cemented or otherwise permanently affixed into position to achieve a desired declination angle. For added stability, a pair of holes may be formed into the body of each ocular, each pair of holes being physically aligned with the two opposing pointed ends of the carrier lens associated with that ocular.

Claims

1. Loupes with an improved declination angle, comprising:

eyeglass frames with carrier lenses having bottom edges;

a hole formed in each carrier lens, each hole having an outer periphery that extends below the bottom edge of the carrier lens, resulting in a pair of opposing pointed ends;

a pair of ocular devices, each having a body cemented in a respective one of the holes, such that a portion of the ocular body also extends below the bottom edge of the carrier lens; and

wherein each ocular is cemented in position to achieve a desired declination angle.

2. The loupes of claim 1, further including a pair of holes formed into the body of each ocular, each pair of holes being physically aligned with the two opposing pointed ends of the carrier lens associated with that ocular, such that the cement also enters into each hole to provide additional structural stability.

3. The loupes of claim 1, wherein:

the ocular bodies are frusto-conical; and

hole formed in each carrier lens is circular, semi-circular or oval shaped.