US 12,405,548 B2
Optical device
Takeshi Watanabe, Yokohama Kanagawa (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed by TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 2, 2023, as Appl. No. 18/104,805.
Prior Publication US 2024/0264549 A1, Aug. 8, 2024
Int. Cl. G03B 27/52 (2006.01); G02B 17/00 (2006.01); G03G 15/04 (2006.01)
CPC G03G 15/04045 (2013.01) [G02B 17/002 (2013.01); G03B 27/528 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical device, comprising:
a lens mirror array opposed to a light emitting section extending in a first direction, the lens mirror array including a plurality of optical elements side by side in the first direction, the plurality of optical elements respectively including incident-side lens surfaces on which light emitted from the light emitting section is made incident, emission-side lens surfaces that emit the incident light, and reflection surfaces that reflect the light made incident from the incident-side lens surfaces toward the emission-side lens surfaces, a cross section orthogonal to the first direction of the lens mirror array having a constricted shape, a center of which is narrower than both ends thereof that are along an optical path on which the light emitted from the light emitting section passes; and
a holder including a slit having a width smaller than a width of both ends in the cross section of the lens mirror array and larger than a width of a center in the cross section and extending in the first direction, the holder holding the lens mirror array in a state in which a constricted portion in the center in the cross section of the lens mirror array is disposed in the slit.