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1. WO2020183707 - SCANNING OPTICAL SYSTEM AND SCANNING LENS

Publication Number WO/2020/183707
Publication Date 17.09.2020
International Application No. PCT/JP2019/010570
International Filing Date 14.03.2019
IPC
G02B 26/10 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
B41J 2/47 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
435characterised by selective application of radiation to a printing material or impression-transfer material
47using the combination of scanning and modulation of light
G02B 3/00 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
G02B 13/18 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 13/24 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
24for reproducing or copying at short object distances
G02B 26/12 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating or modulating
08for controlling the direction of light
10Scanning systems
12using multifaceted mirrors
CPC
B41J 2/47
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
435characterised by selective application of radiation to a printing material or impression-transfer material
47using the combination of scanning and modulation of light
G02B 13/18
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
18with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
G02B 13/24
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
13Optical objectives specially designed for the purposes specified below
24for reproducing or copying at short object distances
G02B 26/10
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
10Scanning systems
G02B 26/12
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
26Optical devices or arrangements using movable or deformable optical elements for controlling the intensity, colour, phase, polarisation or direction of light, e.g. switching, gating, modulating
08for controlling the direction of light
10Scanning systems
12using multifaceted mirrors
G02B 3/00
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
3Simple or compound lenses
Applicants
  • ナルックス株式会社 NALUX CO., LTD. [JP]/[JP]
Inventors
  • 桑垣内 智仁 KUWAGAITO, Tomohito
Agents
  • 伏見 直哉 FUSHIMI, Naoya
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SCANNING OPTICAL SYSTEM AND SCANNING LENS
(FR) SYSTÈME OPTIQUE DE BALAYAGE ET LENTILLE DE BALAYAGE
(JA) 走査光学系及び走査レンズ
Abstract
(EN)
Provided is a scanning optical system, wherein, with a scanning direction on a surface as a y-axis, a principal ray perpendicularly incident on the surface as a z-axis, a reflection point on the deflector of the principal ray as an origin point, the distance from the origin point to the surface as L, the length of a scanning path on the surface as W, the maximum value and the minimum value of the y-coordinate of a point at which the principal ray passes an emission surface of the scanning lens as ymax and ymin, respectively, the curvature in a main scanning direction of the emission surface at the point as c, and the refractive index of a material as n, power Φ = (1-n)∙c in the main scanning direction at the point is defined, and with the maximum value of the absolute value of dΦ/dy in ranges from ymin to 0.6ymin and from 0.6ymax to ymax as |dΦ/dy|out, and the maximum value of the absolute value of dΦ/dy in a range from 0.6ymin to 0.6ymax as |dΦ/dy|in, 0.54 ≤ L/W ≤ 0.64 |dΦ/dy|out/|dΦ/dy|in ≤ 0.5 is satisfied.
(FR)
L'invention concerne un système optique de balayage, une direction de balayage sur une surface étant un axe y, un rayon principal incident perpendiculairement sur la surface étant un axe z, un point de réflexion sur le déflecteur du rayon principal étant un point d'origine, la distance du point d'origine à la surface étant L, la longueur d'un trajet de balayage sur la surface étant W, la valeur maximale et la valeur minimale de la coordonnée y d'un point auquel le rayon principal passe une surface d'émission de la lentille de balayage étant ymax et ymin, respectivement, la courbure dans une direction de balayage principale de la surface d'émission au point étant c, et l'indice de réfraction d'un matériau en étant n, la puissance Φ = (1-n)∙c dans la direction de balayage principal au point est définie, et la valeur maximale de la valeur absolue de dΦ/dy dans des plages allant de ymin à 0,6ymin et de 0,6ymax à ymax étant |dΦ/dy|out, et la valeur maximale de la valeur absolue de dΦ/dy dans une plage allant de 0,6ymin à 0,6ymax étant |dΦ/dy|in, 0,54 ≤ L/W ≤ 0,64 |dΦ/dy|out/|dΦ/dy|in ≤ 0.5 est satisfaite.
(JA)
面上の走査方向をy軸、該面に垂直に入射する主光線をz軸、該主光線の該偏向器の反射点を原点、原点から該面までの距離をL、該面上における走査経路の長さをW、主光線が該走査レンズの出射面を通過する点のy座標の最大値及び最小値をそれぞれymax及びymin、該点における該出射面の主走査方向の曲率をc、材料の屈折率をnとし、該点における主走査方向のパワーΦ = (1-n)・cを定義し、yminから0.6ymin及び0.6ymaxからymaxの範囲におけるdΦ/dyの絶対値の最大値を|dΦ/dy|outとし、0.6yminから0.6ymaxの範囲におけるdΦ/dyの絶対値の最大値を|dΦ/dy |inとして、 0.54 ≦ L/W ≦ 0.64 |dΦ/dy|out/|dΦ/dy |in ≦ 0.5 を満たす走査光学系。
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