KR960029109A - Laser beam scanning device - Google Patents

Laser beam scanning device Download PDF

Info

Publication number
KR960029109A
KR960029109A KR1019950001221A KR19950001221A KR960029109A KR 960029109 A KR960029109 A KR 960029109A KR 1019950001221 A KR1019950001221 A KR 1019950001221A KR 19950001221 A KR19950001221 A KR 19950001221A KR 960029109 A KR960029109 A KR 960029109A
Authority
KR
South Korea
Prior art keywords
lens
laser beam
beam scanning
light source
optical axis
Prior art date
Application number
KR1019950001221A
Other languages
Korean (ko)
Other versions
KR100335625B1 (en
Inventor
이철우
Original Assignee
이형도
삼성전기 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019950001221A priority Critical patent/KR100335625B1/en
Publication of KR960029109A publication Critical patent/KR960029109A/en
Application granted granted Critical
Publication of KR100335625B1 publication Critical patent/KR100335625B1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/47—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using the combination of scanning and modulation of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/10—Scanning systems
    • G02B26/12—Scanning systems using multifaceted mirrors
    • G02B26/125—Details of the optical system between the polygonal mirror and the image plane

Landscapes

  • Lenses (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)

Abstract

레이저 빔 주사장치가 개시되었다.A laser beam scanning apparatus is disclosed.

이 레이저 빔 주사장치는 크게 광원(20)과, 이 광원(20)에서 조사된 빔을 편향시키는 빔편향기(26)와, 이 빔편향기(26)에서 편향 조사되는 빔으로부터 프린팅 및 감광을 진행하는 감광드럼(29)으로 이루어져 있다. 또한, 해상도를 높이기 위해 빔편향기와 감광드럼 사이에 f-θ렌즈(30)를 구비하였다. 이 f-θ렌즈(30)는 주로 구면수차등의 수차보정을 하는 제1렌즈(31)와, 이 제1렌즈(31)를 통과한 편향빔이 등각 등속으로 주사되도록 보정하는 제2렌즈(32)로 이루어져 있다. 이 f-θ렌즈(30)는 유리소재보다 그 가격이 저렴한 플라스틱 소재로 되어 있으며, 제2렌즈(32)의 빔 출사면을 구면으로 하여 제작상이 어려움을 해결하였다.The laser beam scanning device is mainly used for printing and photosensitive from a light source 20, a beam deflector 26 for deflecting the beam irradiated from the light source 20, and a beam deflected from the beam deflector 26. It consists of a photosensitive drum (29). In addition, an f-θ lens 30 was provided between the beam deflector and the photosensitive drum to increase the resolution. The f-theta lens 30 mainly includes a first lens 31 that corrects aberration such as spherical aberration, and a second lens that corrects the deflection beam passing through the first lens 31 to be scanned at an equiangular velocity ( 32). The f-θ lens 30 is made of a plastic material having a lower cost than a glass material. The f-θ lens 30 has a spherical beam exit surface of the second lens 32 to solve a manufacturing problem.

특히, 제1렌즈(31)와 제2렌즈(32)의 중심광축 사이에 소정 폭의 시프트(shift)를 가지도록 배열하여 동일 중심광축상에 두 렌즈가 위치하는 경우에 비하여 빔편향기(26)의 반사면 가공등에서 발생되는 오차등을 보상하여 더 높은 해상도를 얻을 수 있도록 하였다.In particular, the beam deflector 26 is arranged to have a shift of a predetermined width between the central optical axes of the first lens 31 and the second lens 32, compared to the case where two lenses are positioned on the same central optical axis. By compensating for the error caused by the reflective surface processing, the higher resolution can be obtained.

Description

레이저 빔 주사장치Laser beam scanning device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도의 (가)(나)는 본 발명에 따른 레이저 빔 주사장치의 광학적 구성을 보인 배치도.FIG. 3A is a layout view showing the optical configuration of the laser beam scanning apparatus according to the present invention.

Claims (6)

광원과, 이 광원에서 출사된 빔을 다양한 각으로 편향 시키는 빔편향기와, 상기 빔편향기에서 반사 편향되는 빔이 등선 등각을 유지하도록 보정하는 f-θ렌즈와, 이 f-θ렌즈를 통과 주사되는 빔과 그 자체의 회전으로부터 프리팅 또는 감광을 진행하는 감광드럼으로 이루어진 레이저 빔 주사장치에 있어서, 상기 f-θ렌즈는 빔이 입사되는 입사측과 출사되는 출사면측면이 음의 굴절면을 가지며 그 굴절면이 구면의 제1렌즈와, 상기 제1렌즈와 이웃하여 위치하고 상기 제1렌즈에서 출사된 빔이 입사되는 입사면은 평면 또는 음의 굴절면이고 출사되는 출사면은 음의 굴절면을 가지며 그 굴절면이 구면의 제2렌즈로 이루어지고, 상기 제1렌즈의 광축과 상기 제2렌즈의 광축이 소정 간격 이격되어 상기 감광드럼으로 주사되는 빔의 왜곡을 보정하도록 된 것을 특징으로 하는 레이저 빔 주사장치.A light source, a beam deflector for deflecting the beam emitted from the light source at various angles, a f-? Lens for correcting the beam deflected by the beam deflector to maintain an isometric angle, and scanned through the f-? Lens In the laser beam scanning device comprising a photosensitive drum which proceeds frit or photosensitive from the rotation of the beam and its own rotation, the f-θ lens has a negative refractive surface on the incident side to which the beam is incident and the exit surface side to be emitted The refractive surface is a spherical first lens, the incident surface adjacent to the first lens and the incident surface to which the beam emitted from the first lens is incident is a plane or negative refractive surface and the exiting surface has a negative refractive surface and the refractive surface is A spherical second lens, and the optical axis of the first lens and the optical axis of the second lens are spaced apart by a predetermined interval to correct distortion of the beam scanned into the photosensitive drum. Laser beam scanning apparatus as ranging. 제1항에 있어서, 상기 f-θ렌즈는 굴절률이 1.48(편차 15%)인 플라스틱으로 된 것을 특징으로 하는 레이저 빔 주사장치.The laser beam scanning device of claim 1, wherein the f-? Lens is made of plastic having a refractive index of 1.48 (deviation 15%). 제1항에 있어서, 상기 제1렌즈와 상기 제2렌즈 각각의 중심광축의 차가 상기 두개의 렌즈중 어느 하나의 두께보다 1% 이상인 것을 특징으로 하는 레이저 빔 주사장치.The laser beam scanning apparatus of claim 1, wherein a difference between a central optical axis of each of the first lens and the second lens is 1% or more than a thickness of one of the two lenses. 제1항에 있어서, 상기 f-θ렌즈의 제1렌즈와 제2렌즈 사이의 간격은 상기 제1렌즈 및 제2렌즈 각각의 두께에 비교하여 그 최소 두께의 15%이내 인 것을 특징으로 하는 레이저 빔 주사장치.The laser beam of claim 1, wherein a distance between the first lens and the second lens of the f-θ lens is within 15% of a minimum thickness of the first lens and the second lens, respectively. Beam scanning device. 제1항에 있어서, 상기 제1렌즈의 두께가 상기 제2렌즈의 두께보다 더 두꺼운 것을 특징으로 하는 레이저 빔 주사장치.The laser beam scanning apparatus of claim 1, wherein the thickness of the first lens is thicker than the thickness of the second lens. 제1항에 있어서, 상기 광원과 상기 감광드럼 사이의 광축상에는 주사되는 광에 포함된 수차들을 보정하기 위하여 하나 또는 그 이상의 실린드리컬 렌즈가 더 구비된 것을 특징으로 하는 레이저 빔 주사장치.The laser beam scanning apparatus of claim 1, further comprising one or more cylindrical lenses on the optical axis between the light source and the photosensitive drum to correct aberrations included in the scanned light. ※ 최초출원 내용에 의하여 공개하는 것임.※ According to the contents of the initial application.
KR1019950001221A 1995-01-24 1995-01-24 Laser beam scanning device KR100335625B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950001221A KR100335625B1 (en) 1995-01-24 1995-01-24 Laser beam scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950001221A KR100335625B1 (en) 1995-01-24 1995-01-24 Laser beam scanning device

Publications (2)

Publication Number Publication Date
KR960029109A true KR960029109A (en) 1996-08-17
KR100335625B1 KR100335625B1 (en) 2002-09-05

Family

ID=37479798

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950001221A KR100335625B1 (en) 1995-01-24 1995-01-24 Laser beam scanning device

Country Status (1)

Country Link
KR (1) KR100335625B1 (en)

Also Published As

Publication number Publication date
KR100335625B1 (en) 2002-09-05

Similar Documents

Publication Publication Date Title
JP3072061B2 (en) Optical scanning device
US6462853B2 (en) Optical scanning device
JP3435303B2 (en) Diffraction type chromatic aberration correction scanning optical system
KR100283383B1 (en) Scanning optical apparatus
KR100507830B1 (en) Optical scanning device and image forming apparatus using the same
CN102207618A (en) Scanning optical apparatus
US20030197912A1 (en) Scanning optical system
US5052767A (en) Optical beam scanning system
ITTO960392A1 (en) OPTICAL ANALYZER.
KR960029108A (en) Laser beam scanning device
WO2004079430A1 (en) Multibeam aligner
US5343325A (en) Optical scanning system with tilt correction function
US5134513A (en) Scanning optical system
US20070081218A1 (en) Light scanning device and scanning optical system
JP3104618B2 (en) Optical scanning device and optical lens
JP3191538B2 (en) Scanning lens and optical scanning device
KR960029109A (en) Laser beam scanning device
KR890016489A (en) Optical scanning device
KR20040100053A (en) Laser scanning unit
JP4219429B2 (en) Manufacturing method of imaging mirror in multi-beam scanning imaging optical system
US6178030B1 (en) Light-scanning optical system having wobble-correcting function and light-scanning apparatus using the same
JPH08122635A (en) Optical scanning optical system
KR100601648B1 (en) Optical scanning unit
RU2257601C2 (en) Optical scanning device (variants), device for forming an image (variants) and device for forming a colored image (variants)
JP3571808B2 (en) Optical scanning optical system and laser beam printer including the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20090409

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee