US 12,085,699 B2
Contactless type optical device
Wonseok Ahn, Yongin-si (KR); and Bogun Park, Seoul (KR)
Assigned to XPERIX INC., Seongnam-si (KR)
Filed by XPERIX INC., Seongnam-si (KR)
Filed on Jan. 9, 2023, as Appl. No. 18/151,620.
Application 18/151,620 is a continuation of application No. 17/488,645, filed on Sep. 29, 2021, granted, now 11,573,409.
Claims priority of application No. 10-2021-0064342 (KR), filed on May 18, 2021.
Prior Publication US 2023/0161140 A1, May 25, 2023
Int. Cl. G06V 40/13 (2022.01); G02B 13/00 (2006.01)
CPC G02B 13/005 (2013.01) 8 Claims
OG exemplary drawing
 
1. A contactless type optical device, comprising:
an image photographing module configured to photograph a subject, the image photographing module including a photographing lens forming an image of light that is scattered from the subject and is incident on the photographing lens;
an illuminator configured to radiate illumination light, the illuminator disposed on a plane within a predetermined distance from the image photographing module;
a first lens configured to reduce an incidence angle of the illumination light traveling from the illuminator;
a second lens having a first surface to which the illumination light passing through the first lens is incident to be transmitted, and a second surface to which the subject's scattered light scattered from the subject is incident to be transmitted; and
a reflector to reflect the subject's scattered light so that the subject's scattered light is incident on the image photographing module,
wherein the photographing lens is disposed such that the subject's scattered light passing through the second lens is incident on the photographing lens,
wherein the first lens is disposed to be spaced apart from the illuminator to face the illuminator,
wherein the reflector includes a first reflector and a second reflector disposed between the first lens and the second lens,
wherein the first reflector and the second reflector are disposed to be spaced apart from each other by a predetermined distance to face each other while no other reflectors are placed between the first reflector and the second reflector, and
wherein a distance between the first reflector and the second reflector is larger than a diameter of the first lens.