US 12,298,712 B2
Apparatus and method for manufacturing radial or azimuthal polarization conversion component
Jing Heng Chen, Taichung (TW); Chien Yuan Han, New Taipei (TW); Fan Hsi Hsu, Hsinchu (TW); Kun-Huang Chen, Taichung (TW); Chien Hung Yeh, Taichung (TW); and Hung Lung Tseng, Taichung (TW)
Assigned to Feng Chia University, Taichung (TW)
Filed by FENG CHIA UNIVERSITY, Taichung (TW)
Filed on May 24, 2022, as Appl. No. 17/752,328.
Claims priority of application No. 110118903 (TW), filed on May 25, 2021.
Prior Publication US 2022/0382213 A1, Dec. 1, 2022
Int. Cl. G03H 1/04 (2006.01); G02B 5/32 (2006.01); G02B 27/28 (2006.01)
CPC G03H 1/0402 (2013.01) [G02B 5/32 (2013.01); G02B 27/286 (2013.01); G03H 2001/0439 (2013.01); G03H 2223/18 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An apparatus for manufacturing a radial or azimuthal polarization conversion component, disposed on a holographic recording material having a thickness d, comprising:
a reflector having a truncated cone shape, having a top portion, a bottom portion and a circumferential portion connected between the top portion and the bottom portion, the top portion having a width L, the bottom portion having a width D, a height H being defined from the top portion to the bottom portion, an angle θi1 being defined between the circumferential portion and the top portion;
wherein when a light beam is incident vertically from above, a part of the light beam vertically passes through the top portion to the bottom portion, another part of the light beam enters the circumferential portion at an incident angle θi1 and forms a reflected light beam to enter the bottom portion at an incident angle θi2, the reflected light enters the holographic recording material at a refraction angle θt2 to generate an exposure range with a radius R on the holographic recording material;

OG Complex Work Unit Math