United States Patent  [ii] Patent Number: 4,812,003
Dambach et al.  Date of Patent: Mar. 14, 1989
 OPTIC SENSING ASSEMBLY
 Inventors: Philip J. Dambach, Naperville, 111.;
Ray Brown, Los Gatos, Calif.
 Assignee: Molex Incorporated, Lisle, 111.
 Appl. No.: 119,012
 Filed: Nov. 10,1987
 Int. CI.* G02B 6/32
 U.S. CI 350/96.18; 350/96.15;
 Field of Search 350/96.15, 96.18, 96.29;
 References Cited
U.S. PATENT DOCUMENTS
4,329,017 5/1982 Kapany et al 350/96.15
4,358,960 11/1982 Porter 250/227
4,692,611 9/1987 Hoogenboom 250/227
FOREIGN PATENT DOCUMENTS
0102506 6/1985 Japan 250/227
0259139 11/1986 Japan 250/227
1216752 3/1986 U.S.S.R 350/96.15
Primary Examiner— William L. Sikes
Assistant Examiner—Xuan Thi Vo
Attorney, Agent, or Firm—John W. Cornell; Louis A.
An optic sensing assembly for detecting reflection at a target area includes a cable holding element formed as an integral, one-piece body having sockets for directly receiving nonterminated ends of a light supply fiber optic cable and a light receiving fiber optic cable. Stop portions in the sockets accurately position the fiber optic cable ends. A housing has a cavity slideably receiving the holding element and latch structures on the holding element and housing engage with one another to secure the holding element with stop portions positioned at a precise location relative to housing. A strain relief structure is effective upon engagement of the latch structures for holding fiber optic cable ends within the sockets. An aperture in the housing communicates with the cavity for permitting light transmission between the cable ends and the target area. A lens structure formed integrally in the holding element directs or focuses light along paths from the cable ends to the target area.
23 Claims, 3 Drawing Sheets