CN201007758Y - fthetaoptical system for implementing wide-range chromoscan - Google Patents
fthetaoptical system for implementing wide-range chromoscan Download PDFInfo
- Publication number
- CN201007758Y CN201007758Y CNU2006200664287U CN200620066428U CN201007758Y CN 201007758 Y CN201007758 Y CN 201007758Y CN U2006200664287 U CNU2006200664287 U CN U2006200664287U CN 200620066428 U CN200620066428 U CN 200620066428U CN 201007758 Y CN201007758 Y CN 201007758Y
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- laser
- lens
- chromoscan
- optical system
- mirror
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Abstract
The utility model relates to the field of a color photograph finishing, in particular to a focus theta optical system capable of achieving broad-width color scanning. The utility model comprises a red laser, a green laser, a blue laser, a focus theta lens and a photosensitive imaging, and is characterized in that a beam expanding system, a square diaphragm, a light combination mirror and a vibrating mirror are orderly arranged among the red laser, the green laser, the blue laser and the focus theta lens, each beam of the laser is respectively corresponding to the beam expanding system, the square diaphragm and the light combination mirror. After being combined through the light combination mirror, the three beams of the lasers are reflected to the focus theta lens by the vibrating mirror to be scanned. Through using the method of elongating a focal length of the focus theta lens, thereby achieving the achromatization and various monochromatic aberrations, and improving the scanning resolution.
Description
Technical field
The utility model relates to photochrome and develops and prints the field, particularly a kind of f θ optical system that realizes the wide cut chromoscan.
Background technology
Chromoscan can be used on image, prints industry.For the laser scanning system of vibration mirror scanning, be applicable to that the flat field focusing system f θ camera lens of laser instrument emission wavelength is its core component.And in image industry generally based on middle small breadth, large format scanning (reaching 50 cun as the wide cut degree) is still seldom.Test broad width scanning, need f θ camera lens to increase visual field or elongation focal length.The visual field is limited by the scan angle of galvanometer, and big visual field f θ camera lens is difficult to the calibration marginal aberration.
The utility model content
The purpose of this utility model is to provide a kind of sweep length to reach 50 cun wide cut flat field scanning optics, by elongating the method for f θ lens focus, realizes achromatism and various monochromatic aberration, improves scanning resolution.
The beneficial effects of the utility model realize by following proposal:
The utility model is a kind of f θ optical system that realizes the wide cut chromoscan, comprise red, green, blue laser instrument, f θ camera lens and photosensitive imaging medium, be characterized in being provided with beam-expanding system, square diaphragm successively between red, green, blue laser instrument and the f θ camera lens, closing light microscopic and galvanometer, every Shu Jiguang corresponding respectively beam-expanding system, a square diaphragm and close light microscopic, after three beams light ECDC light microscopic lumps together, again by vibration mirror reflected to f θ camera lens, scan.Beam-expanding system has the effect of narrow laser beam expansion for thick laser beam and adjusting f θ camera lens chromatic longitudiinal aberration; After focusing in order to control, also arrives square diaphragm the spot size of diffraction limit; Close the light microscopic group in order to close light; Galvanometer is implemented in ± 20 degree scan angle interscans; F θ camera lens is realized the flat field focusing scanning, eliminates various monochromatic aberrations and part achromatism.
Described beam-expanding system is made up of negative mirror of shaping and expansion Shu Zhengjing, and again by expanding Shu Zhengjing, the distance that shaping is born between mirror and the expansion Shu Zhengjing is adjustable by the negative mirror of shaping in laser elder generation.
The photosystem that closes of described blue laser correspondence is a catoptron, and the light microscopic that closes of green laser correspondence is anti-green logical blue spectroscope, and the light microscopic that closes of red laser correspondence is the anti-red logical bluish-green blue mirror that divides.
Described f9 camera lens is made up of three lens, and the direction of injecting according to laser is followed successively by negative lens, first telescope direct and second telescope direct, and negative lens bends towards object space, and glass refraction is greater than 1.65, and Abbe number is less than 30; First telescope direct and second telescope direct bend towards picture side, and bigger separation is arranged between two lens, and glass refraction is greater than 1.6, and Abbe number is greater than 50.
Described lens satisfy following relation:
-0.13＜f1′/f＜-0.09
0.16＜f2′/f＜0.24
0.24＜f3′/f＜0.36
Wherein, f is the focal length of scanning lens, and f1 ' is the focal length of negative lens, and f2 ' is the focal length of first telescope direct, and f3 ' is the focal length of second telescope direct.
The structural parameters of described f θ camera lens are as follows:
| The face sequence number | Radius | Thickness | Refractive index | Abbe number |
| 1 (entrance pupil) 23456 | ∞ -154.14 316.2 348.3 -275.09 2560.0 | 28 34.2 0.4 14.4 29.4 22.1 | Air 1.72 Air 1.62 Air 1.61 | 29.5 53.2 58.9 |
| 7 | -242.08 | - | Air |
Compared with prior art, the utility model has the advantages that:
1, f θ camera lens has ± depth of focus of 10mm, the long 1224mm of focal length, and back focal length is 1533mm, field angle reaches ± 30 degree, has very wide sweep amplitude, and sweep length reaches promptly about 50 cun of 1280mm, diffraction pattern Aili spot diameter after the focusing differentiates up to more than the 300dpi scanning less than 170 μ m;
2, reach diffraction limit at the place, focal plane, eliminated various monochromatic aberrations and part aberration, axial chromatic aberration is regulated by beam-expanding system and is eliminated, and residual chromatic longitudiinal aberration is eliminated by electronic control, satisfies f θ relation on image planes, has good scan characteristic.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of f θ camera lens;
Fig. 3 is light mottle figure;
Fig. 4 is the curvature of field and f θ distortion figure.
Among the figure: blue laser 1, green laser 2, red laser 3, mirror 4 is born in shaping, expands Shu Zhengjing 5, square diaphragm 6, catoptron 7a, anti-green logical blue spectroscope 7b, the anti-red logical bluish-green blue mirror 7c that divides, galvanometer 8, f θ camera lens 9, negative mirror 10, the first telescope directs 11, the second telescope directs 12.
Embodiment
The utility model is a kind of f θ optical system that realizes the wide cut chromoscan, comprise red, green, blue laser instrument, f θ camera lens 9, be characterized in being provided with beam-expanding system, square diaphragm 6 successively between red, green, blue laser instrument and the f θ camera lens 9, closing light microscopic and galvanometer 8, every Shu Jiguang corresponding respectively beam-expanding system, a square diaphragm 6 and close light microscopic, after three beams light ECDC light microscopic lumps together, reflex to f θ camera lens 9 by galvanometer 8 again, scan.
Described beam-expanding system is made up of negative mirror 4 of shaping and expansion Shu Zhengjing 5, and again by expanding Shu Zhengjing 5, the distance that shaping is born between mirror 4 and the expansion Shu Zhengjing 5 is adjustable by the negative mirror 4 of shaping in laser elder generation.
The light microscopic that closes of described blue laser 1 correspondence is catoptron 7a, and the light microscopic that closes of green laser 2 correspondences is anti-green logical blue spectroscope 7b, and the light microscopic that closes of red laser 3 correspondences is the anti-red logical bluish-green blue mirror 7c that divides.
As shown in Figure 2, f θ camera lens 9 is made up of three lens, and the direction of injecting according to laser is followed successively by negative lens 10, first telescope direct 11 and second telescope direct 12, and negative lens 10 bends towards object space, and glass refraction is greater than 1.65, and Abbe number is less than 30; First telescope direct 11 and second telescope direct 12 bend towards picture side, and bigger separation is arranged between two lens, and glass refraction is greater than 1.6, and Abbe number is greater than 50.
Described lens satisfy following relation:
-0.13＜f1′/f＜-0.09
0.16＜f2′/f＜0.24
0.24＜f3′/f＜0.36
Wherein, f is the focal length of scanning lens, and f1 ' is the focal length of negative lens, and f2 ' is the focal length of first telescope direct, and f3 ' is the focal length of second telescope direct.
The structural parameters of described f θ camera lens are as follows:
| The face sequence number | Radius | Thickness | Refractive index | Abbe number |
| 1 (entrance pupil) 234567 | ∞ -154.14 316.2 348.3 -275.09 2560.0 -242.08 | 28 34.2 0.4 14.4 29.4 22.1 - | Air 1.72 Air 1.62 Air 1.61 Air | 29.5 53.2 58.9 |
As shown in Figure 1, it is thick laser beam that RGB three beams of laser 1,2,3 expands through beam-expanding system respectively, respectively by three corresponding square diaphragms 6, by closing light microscopic three beams of laser is lumped together again again, reflexes to f θ camera lens 9 by galvanometer 8 again, scans.
F θ camera lens 9 focuses a laser beam into back focal length 1533mm place, because axial chromatic aberration, three look laser are not to focus on same position, can regulate the distance between two lens of beam-expanding system respectively, three look laser all are transferred on the back focal length plane focus on, spot diameter is all less than 170 μ m, as shown in Figure 3.Various monochromatic aberrations such as f θ camera lens 9 elimination spherical aberration comas are eliminated chromatic longitudiinal aberration with part, electronic calibration when remaining chromatic longitudiinal aberration by scanning.F θ camera lens 9 also is implemented in the flat field scanning on the focal plane, satisfies f θ relation, and its curvature of field and f θ distortion owing to bigger field angle and long focal length, realize the scanning of very big wide cut as shown in Figure 4, and sweep length can reach promptly about 50 cun of 1280mm.
Claims (7)
1. f θ optical system that realizes the wide cut chromoscan, comprise red, green, blue laser instrument, f θ camera lens (9), it is characterized in that being provided with beam-expanding system, square diaphragm (6) between red, green, blue laser instrument and the f θ camera lens successively, closing light microscopic and galvanometer (8), every Shu Jiguang distinguishes corresponding beam-expanding system, a square diaphragm (6) and closes light microscopic, after three beams light ECDC light microscopic lumps together, reflex to f θ camera lens (9) by galvanometer (8) again, scan.
2. the f θ optical system of realization wide cut according to claim 1 chromoscan is characterized in that described beam-expanding system is born mirror (4) by shaping and expansion Shu Zhengjing (5) forms, and laser passes through expansion Shu Zhengjing (5) again by the negative mirror (4) of shaping earlier.
3. the f θ optical system of realization wide cut according to claim 2 chromoscan is characterized in that described shaping bears mirror (4) and expand distance between the Shu Zhengjing (5).
4. the f θ optical system of realization wide cut according to claim 1 chromoscan, it is characterized in that the corresponding light microscopic that closes of described blue laser (1) is catoptron (7a), the light microscopic that closes that green laser (2) is corresponding is anti-green logical blue spectroscope (7b), and the light microscopic that closes that red laser (3) is corresponding is the anti-red logical bluish-green blue mirror (7c) that divides.
5. the f θ optical system of realization wide cut according to claim 1 chromoscan, it is characterized in that described f θ camera lens is made up of three lens, the direction of injecting according to laser is followed successively by negative lens (10), first telescope direct (11) and second telescope direct (12), negative lens bends towards object space, glass refraction is greater than 1.65, and Abbe number is less than 30; First telescope direct (11) and second telescope direct (12) bend towards picture side, and bigger separation is arranged between two lens, and glass refraction is greater than 1.6, and Abbe number is greater than 50.
6. the f θ optical system of realization wide cut according to claim 5 chromoscan is characterized in that described lens satisfy following relation:
-0.13＜f1′/f′＜-0.09
0.16＜f2′/f′＜0.24
0.24＜f3′/f′＜0.36
Wherein, f ' is the focal length of scanning lens, and f1 ' is the focal length of negative lens, and f2 ' is the focal length of first telescope direct, and f3 ' is the focal length of second telescope direct.
7. the f θ optical system of realization wide cut according to claim 5 chromoscan is characterized in that the structural parameters of described f θ camera lens are as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200664287U CN201007758Y (en) | 2006-10-24 | 2006-10-24 | fthetaoptical system for implementing wide-range chromoscan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200664287U CN201007758Y (en) | 2006-10-24 | 2006-10-24 | fthetaoptical system for implementing wide-range chromoscan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201007758Y true CN201007758Y (en) | 2008-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200664287U Expired - Lifetime CN201007758Y (en) | 2006-10-24 | 2006-10-24 | fthetaoptical system for implementing wide-range chromoscan |
Country Status (1)
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|---|---|
| CN (1) | CN201007758Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477961A (en) * | 2016-07-19 | 2019-03-15 | 麦克赛尔株式会社 | Projection type video display apparatus |
-
2006
- 2006-10-24 CN CNU2006200664287U patent/CN201007758Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109477961A (en) * | 2016-07-19 | 2019-03-15 | 麦克赛尔株式会社 | Projection type video display apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG IMETTO IMAGING TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGDONG IMETTO DIGITAL IMAGING TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 510663 Guangdong city of Guangzhou province high tech Industrial Development Zone of Luogang District Science City D301-D308 skim Springs Road No. 3 Guangzhou international business incubator District real D Patentee after: IMETTO Digital Imaging Technology Co., Ltd. Address before: 510000 D301-D309, Guangzhou International Business Incubator (D District), Science City, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong, China Patentee before: Guangdong Imetto Digital Imaging Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080116 |
|
| EXPY | Termination of patent right or utility model |