US 12,130,454 B2
Manufacture of optical light guides
Nicola Spring, Oberterzen (CH); Hartmut Rudmann, Jona (CH); and Markus Rossi, Jona (CH)
Assigned to AMS SENSORS SINGAPORE PTE. LTD., Singapore (SG)
Filed by ams Sensors Singapore Pte. Ltd., Singapore (SG)
Filed on May 12, 2021, as Appl. No. 17/318,345.
Application 17/318,345 is a division of application No. 15/522,423, abandoned, previously published as PCT/SG2015/050443, filed on Nov. 11, 2015.
Claims priority of provisional application 62/211,436, filed on Aug. 28, 2015.
Claims priority of provisional application 62/160,224, filed on May 12, 2015.
Claims priority of provisional application 62/079,080, filed on Nov. 13, 2014.
Prior Publication US 2021/0333445 A1, Oct. 28, 2021
Int. Cl. B29D 11/00 (2006.01); F21V 7/00 (2006.01); G02B 3/00 (2006.01); G02B 5/04 (2006.01); G02B 6/12 (2006.01); G02B 6/122 (2006.01); G02B 6/13 (2006.01); G02B 6/34 (2006.01); G02B 13/00 (2006.01); G02B 17/08 (2006.01); G02B 6/43 (2006.01)
CPC G02B 5/045 (2013.01) [B29D 11/00692 (2013.01); B29D 11/00721 (2013.01); F21V 7/0091 (2013.01); G02B 3/0062 (2013.01); G02B 5/04 (2013.01); G02B 6/12004 (2013.01); G02B 6/122 (2013.01); G02B 6/13 (2013.01); G02B 6/34 (2013.01); G02B 13/0065 (2013.01); G02B 17/0856 (2013.01); G02B 2006/12114 (2013.01); G02B 2006/12166 (2013.01); G02B 6/43 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for manufacturing parts for optical light guide elements, the method comprising
a′) providing a plate having an upper face and a lower face which are aligned parallel to each other;
b′) obtaining a plurality of initial bars, each initial bar extending along a respective initial-bar direction from a first bar end to a second bar end, by conducting a plurality of cuts through the plate which run parallel to each other and parallel to the initial-bar directions and which create cut faces which are aligned perpendicularly to the upper and lower faces,
wherein the initial bars have a first side face extending from the first bar end to the second bar end, the first side face being reflective;
b) rotating each initial bar by 90° about the respective initial bar direction and positioning the initial bars in a row with their respective initial-bar directions aligned parallel to each other and with their respective first side faces facing towards a neighboring one of the initial bars;
c) fixing the plurality of initial bars with respect to each other in the position achieved in step b) to obtain a bar arrangement;
d) segmenting the bar arrangement into prism bars by separating the bar arrangement into sections by creating cut faces which are at an angle with respect to the initial-bar directions; and
e) segmenting the prism bars into parts.