CN109270682A - A kind of laser projection device - Google Patents
A kind of laser projection device Download PDFInfo
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- CN109270682A CN109270682A CN201811211309.XA CN201811211309A CN109270682A CN 109270682 A CN109270682 A CN 109270682A CN 201811211309 A CN201811211309 A CN 201811211309A CN 109270682 A CN109270682 A CN 109270682A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- 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
- G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
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- 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
- G02B26/0875—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more refracting elements
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/28—Reflectors in projection beam
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Abstract
The invention discloses a kind of laser projection devices, including laser light source, for providing illuminating bundle；Light valve, for forming image strip after being modulated to illuminating bundle；Projection lens, for receive image strip and correct amplification after be projected to projection screen imaging；It further include mobile eyeglass between light valve and projection lens, the mobile eyeglass of the image strip directive that light valve is also used to be formed after modulation, mobile eyeglass vibrated with predeterminated frequency so that by the movement eyeglass the corresponding image strip staggered superposition of adjacent two frames projected image, can be improved projection imaging quality.
Description
The application be propose on 08 17th, 2016 entitled " a kind of ultra-short focus projection lens and laser projection are set
It is standby " Chinese invention patent application 201610675937.8 divisional application.
Technical field
The present invention relates to projection art, in particular to a kind of laser projection device.
Background technique
With the raising of science and technology, projection imaging system in people's work and life using more and more extensive, than
Such as education, office, household or amusement.Wherein, ultrashort out-of-focus projection can effectively shorten the projector distance of projector, and project big
Size picture, the favor by consumer.
Projection lens is the critical component for realizing projection, and in practical applications, projection lens optical system can be because of processing
The reasons such as technique, assembling generate aberration, such as distortion, astigmatism, the curvature of field, coma performance, and aberration is in current projection lens design
The problem that must be faced.
In order to effectively overcome aberration, there are three types of the design methods of camera lens, respectively refraction type, reflective and mixing at present
Formula.
Refraction type: projection lens is made of spherical lens or non-spherical lens, the image strip big angle after projection lens
Degree outgoing is to achieve the purpose that shorten projector distance.Such projection lens can effectively eliminate big visual field bring aberration, still
The number of lenses of projection lens is big, type is more, and structure is complicated for such projection lens, and the length of camera lens is also not easy to reduce, and can make
The property made is low.
Reflective: projection lens is by plane mirror, spherical reflector, non-spherical reflector or free-form surface mirror
Composition achievees the purpose that shorten projector distance by deflecting refractive power repeatedly.But the design form of such projection lens is in the presence of more
Piece is aspherical or free-form surface mirror, and at high cost in the links such as processing, manufacture, detection, manufacturability is low.
It is hybrid: by refraction type and reflective carry out integrated application, to be generally divided into refractor group, reflection microscope group, be mesh
The mainstay mode of preceding ultra-short focus projection lens on the market.
Summary of the invention
The present invention provides a kind of laser projection devices, can be improved projection imaging quality.
For achieving the above object, it adopts the following technical scheme that
A kind of laser projection device, including laser light source, for providing illuminating bundle；Light valve, for being adjusted to illuminating bundle
Image strip is formed after system；Projection lens, for receive image strip and to image strip correction amplification after be projected to projection screen
Screen imaging；
And further include mobile eyeglass between light valve and projection lens, light valve is also used to the image strip that will be formed after modulation
Directive moves eyeglass,
Mobile eyeglass vibrated with predeterminated frequency so that by the movement eyeglass the corresponding image strip of adjacent two frames projected image
Staggered superposition, and enter projection lens；
Further, mobile eyeglass is plate glass or reflecting mirror；
Further, light valve biases ultra-short focus projection lens primary optical axis, and offset meets: 1.2 < A/B < 1.5, wherein A refers to light valve
Height, B refers to primary optical axis to the distance of the upper end of light valve；
Further, adjacent two frames projected image includes first frame projected image and the second frame projected image, first frame perspective view
Picture and the second frame projected image are obtained by same frame picture breakdown；
Further, when the corresponding image strip of first frame projected image is by mobile eyeglass, mobile eyeglass is in first
It sets；When the corresponding image strip of the second frame projected image is by mobile eyeglass, mobile eyeglass is in the second position, wherein the
One position and second position difference；
Further, first frame projected image is identical with the row, column resolution ratio of the second frame projected image, and with the row of light valve,
Column split rate is at multiple proportion；
Further, ultra-short focus projection lens successively include: the first lens group, second along the direction of image strip entrance propagation
Lens group and reflecting mirror, wherein the first lens group, the second lens group and reflecting mirror are in same optical axis, and mobile eyeglass is located at light
Between valve and the first lens group；
Further, the first lens group, the second lens group form refracting set, wherein light valve face is into the first lens group first
Spacing of the distance of piece lens between BL, with refracting set and reflecting mirror is L2, and the ratio range of BL/L2 is 0.2-0.35；
It further, further include total-reflection prism group, total-reflection prism group is set between light valve and mobile eyeglass；
Further, projection lens is ultra-short focus projection lens, projects ratio between 0.2 ~ 0.3.
The technical solution provided in the embodiment of the present invention at least has the advantages that
Laser projection device provided in an embodiment of the present invention, including laser light source, light valve, projection lens and mobile eyeglass.It moves
Index glass piece is vibrated with predeterminated frequency, so that the corresponding image strip of adjacent two frames projected image by the vibration eyeglass is incomplete
Overlapping carries out staggered superposition since image strip is not exclusively overlapped, so that the image strip of the same pixel of directive increases, Jin Erti
The resolution ratio of height imaging；And since the vibration of mobile eyeglass is so that the corresponding image strip of adjacent two frames projected image is slightly wrong
It opens, so that it is excessively more smooth between pixel, to improve the fine and smooth sense of imaging, and then improve image quality.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and in specification together principle for explaining the present invention.
Figure 1A is a kind of configuration diagram for ultra-short focus projection lens that the embodiment of the present invention one provides；
Figure 1B is paths schematic diagram in the ultra-short focus projection lens based on Fig. 1；
Fig. 2A is a kind of structure composition schematic diagram of ultra-short focus projection lens provided by Embodiment 2 of the present invention；
Fig. 2 B is lens imaging effect diagram provided in an embodiment of the present invention；
Fig. 3 A is a kind of laser projection device configuration diagram that the embodiment of the present invention three provides；
Fig. 3 B is a kind of laser projection device light path system schematic diagram that the embodiment of the present invention three provides；
Fig. 4 A is another laser projection device schematic diagram of optical system that the embodiment of the present invention three provides；
Fig. 4 B is based on the eyeglass effect diagram in Fig. 4 A.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
Example being described in detail in claims, some aspects of the invention are consistent.
Embodiment one,
One embodiment of the invention provides a kind of ultra-short focus projection lens, and as shown in Figure 1A, ultra-short focus projection lens include refraction
Microscope group 100 and reflection microscope group 130.Refracting set 100 includes the first lens group 110 and the second lens group 120, reflects microscope group 130
Including a reflecting mirror, after being placed in the second lens group 120.Refracting set 100 and reflection microscope group 130 are in same primary optical axis 101.Its
In, the first lens group 110 and the second lens group 120 all have two panels non-spherical lens, have preferable aberration correction ability.
The light path schematic diagram of ultra-short focus projection lens provided in this embodiment is as shown in Figure 1B, is exported by x ray machine part 140
Image strip after refracting set 100, i.e., successively after 120 refractive transmission of the first lens group 110 and the second lens group,
First time imaging is carried out between refracting set 100 and reflection microscope group 130, Tu1BZhong, 102 be the first time imaging surface, reflection
Microscope group 130 receives the light beam dissipated after imaging for the first time, first time imaging is reflected, and be projected to projection screen and form second
The projected picture that secondary imaging, i.e. eye-observation are arrived.
Wherein, the image of second of imaging is 140% ~ 150%, i.e. shadow relative to the offset (offset) of primary optical axis 101
As light beam is to be projected to projection screen imaging obliquely, projected image and primary optical axis are eccentric.
And in the present embodiment, refracting set 100 and reflection microscope group 130 generate positive diopter, so as to focus
At the picture of amplification factor.Wherein, the total length of refracting set 100 be L1, refracting set 100 and reflection microscope group 130 between
Away from for L2, L1, L2 satisfaction: 0.65 < L1/L2 < 0.7.The small volume of the ultra-short focus projection lens.
And ultra-short focus projection lens of the embodiment of the present invention further include aperture diaphragm (not shown), aperture diaphragm position
Between the first lens group 110 and the second lens group 120, aperture diaphragm is in same with refracting set 100 and reflection microscope group 130
Primary optical axis, aperture diaphragm are used to limit the light passing amount of the ultra-short focus projection lens.
In embodiments of the present invention, the projection of ultra-short focus projection lens is compared between 0.2 ~ 0.3, wherein projection ratio
(throw ratio) refers to the ratio between the distance between projection lens and projection screen and the width of projected picture, projects than smaller,
Perhaps projection device is bigger apart from the screen size that projection screen is closer or projects for projection lens.
In embodiments of the present invention, the equivalent focal length of ultra-short focus projection lens is F1, the equivalent focal length of the first lens group 110
For F2, the equivalent focal length of the second lens group 120 is F3, and the equivalent focal length of reflection microscope group 130 is F4, and F1, F2, F3, F4 meet:
5 < | F2/F1 | < 9 ；
7 < | F3/F1 | < 100；
5 < | F4/F1 | < 15。
Above-mentioned focal length limitation only gives the scope of design of ultra-short focus projection lens of the embodiment of the present invention, all to fall into this focal length
The lens design in range is limited in the protection scope of technical solution of the present invention.
And in the embodiment of the present invention, the effective focal length (Effective Focal Length) of ultra-short focus projection lens
For -3.3mm ~ -3.5mm.
In a specific implementation, effective focal length=- 3.38mm of ultra-short focus projection lens, offset=142% ~ 150%, solution
Analysis ability can achieve 93lp/mm, refer to the lines of every millimeter of 93 groups of alternating black and white, can project screen size be 80 ~
120 inches, projection is than being 0.24 ~ 0.25.
And in another specific implementation, effective focal length=- 3.47mm of ultra-short focus projection lens, offset=142% ~
150%, analytic ability can achieve 93lp/mm, and can project screen size is 80 ~ 120 inches, and projection is than being 0.245
~ 0.255。
To sum up, ultra-short focus projection lens provided in an embodiment of the present invention include refracting set and reflection microscope group, wherein refraction
Microscope group is used to carry out incident image strip first time imaging, and first time imaging is incident to reflection microscope group, reflects microscope group
First time imaging is reflexed into projection screen and carries out second of imaging, the image of second of imaging has larger relative to primary optical axis
Offset, thus be conducive to realize short focus large scale projection.Wherein, refracting set is mentioned by the first lens group and the second lens group
High aberration correction ability, reflection microscope group can shorten light path, while realizing short focus projection, can rectify to Off-axis aberrations
Just, the resolving power of camera lens is improved.
Embodiment two,
The embodiment of the present invention two provides a kind of ultra-short focus projection lens on the basis of embodiment one.
And specifically, as shown in Figure 2 A, along the direction of light beam incidence, refracting set successively includes: the first lens group
210, the second lens group 220.
First lens group 210, the second lens group 220 are in same optical axis 201.
First lens group 210 include at least one spherical lens and two non-spherical lenses, two of the first lens group 210
At least one spherical lens is provided between non-spherical lens；When image strip the first lens group 210 of directive, the first lens group
210 correction image strips, and by the second lens group of image strip directive 220 after correction；
Second lens group 220 includes at least one spherical lens and two non-spherical lenses, and two of the second lens group are aspherical
At least one spherical lens is provided between lens；When image strip the second lens group 220 of directive, the second lens group 220 is used
In correction image strip, and image strip is exported to next optical component and is imaged.
Specifically, referring to fig. 2, along the direction of light beam incidence, the first lens group 210 successively includes the first non-spherical lens
211 and second non-spherical lens 212, the first non-spherical lens 211 and the second non-spherical lens 212 with refracting set be in same
Optical axis 201.
In a specific implementation, along light beam incident direction, the first lens group 210 includes that the first spherical lens 213, first is non-
Spherical lens 211, the second spherical lens 214, third spherical lens 215, the 4th spherical lens 216 and the second non-spherical lens
212, the diopter of above-mentioned six lens is successively negative, bears, is negative, positive, is positive and negative.
Alternatively, the position of the first non-spherical lens 211 and the first spherical lens can be interchanged in another specific implementation,
I.e. along light beam incident direction, the first lens group 210 includes the first non-spherical lens 211, the first spherical lens 213, the second spherical surface
Lens 214, third spherical lens 215, the 4th spherical lens 216 and the second non-spherical lens 212, above-mentioned six lens are bent
Luminosity is successively negative, bears, is negative, positive, is positive and negative, and the lens in the first lens group 210 are in same optical axis.
And the direction along light beam incidence, the second lens group 220 successively include third non-spherical lens 221 and the 4th
Non-spherical lens 222, third non-spherical lens 221 and the 4th non-spherical lens 222 are in same optical axis 201 with refracting set.
In a specific implementation, along light beam incident direction, the second lens group 220 successively include third non-spherical lens 221,
5th spherical lens 223, the 6th spherical lens 224, the 7th spherical lens 225, the 8th spherical lens 226, the 9th spherical lens
227, the tenth spherical lens 228, the 11st spherical lens 229 and the 4th non-spherical lens 222, the dioptric of above-mentioned nine lens
Degree is successively positive, is positive and negative, is negative, positive, is negative, positive, is negative, positive, and the lens in the second lens group 220 are in same optical axis.
To which the refracting set of the first lens group 210 and the second lens group 220 composition has positive diopter, and receives
The incidence of image strip, thus allows for optical imagery.
For non-spherical lens, the first non-spherical lens 211, the second non-spherical lens 212, third non-spherical lens are influenced
221 and the 4th non-spherical lens 222 imaging factors have aspherical equation higher order coefficient order, the song of non-spherical lens
The diopter of rate, the circular cone coefficient of non-spherical lens and non-spherical lens.
The order of the higher order coefficient of aspherical equation influences non-spherical lens to the edge analytic ability of imaging, when aspherical
When the order of the higher order coefficient of equation is higher, the shape that the curved surface of aspherical equation includes is more complicated, to the light of image strip
Correction ability it is better.
Curvature refers to the inverse of the spherical radius of the close key light shaft portion of non-spherical lens.The present embodiment only to curvature just
Negative to be limited, the curvature for defaulting the reverse optical path direction in convex surface of non-spherical lens is positive.
Circular cone coefficient influences the shape of the curved surface of the dipped beam axis of non-spherical lens, when the circular cone coefficient of non-spherical lens is zero
When, the shape of the curved surface of the dipped beam axis of non-spherical lens is circle, is mainly used for correcting the coma of image strip rim ray.Such as
Fruit circular cone coefficient choose it is improper, will cause light beam deflection it is improper, lead to image blur problem.
Diopter influences non-spherical lens to the degree of deflection of light, and the bigger non-spherical lens of diopter is to image strip
Degree of deflection is bigger, is mainly used for correcting coma of the image strip far from key light shaft portion.Default is shaped like the convex of non-spherical lens
The diopter of lens is positive, and the diopter of the concavees lens shaped like non-spherical lens is negative.
Specifically, the first non-spherical lens 211, the second non-spherical lens 212, third non-spherical lens 221 and the 4th are non-
Order, curvature, circular cone coefficient and the diopter of the higher order coefficient of the aspherical equation of spherical lens 222 meet respectively to be wanted as follows
It asks:
The order of the higher order coefficient of the aspherical equation of first non-spherical lens 211 is greater than or equal to preset first threshold value；Second
The order of the higher order coefficient of the aspherical equation of non-spherical lens 212 is greater than or equal to default second threshold, due to when aspherical
When the order of the higher order coefficient of equation is higher, the shape that the curved surface of aspherical equation includes is more complicated, to the light of image strip
Correction ability it is better, but manufacture it is also more difficult, cost is higher, also not right in order to not influence the correction to image strip
Big difficulty is caused, the order of the higher order coefficient of aspherical equation can be determined according to the actual situation.Or it is default
First threshold and default second threshold can be configured in conjunction with the other configurations situation of refracting set, and preset first threshold value can be with
Equal to default second threshold, for example, the higher order coefficient for the non-spherical lens for including in refracting set in embodiments of the present invention
Order is greater than or equal to 10, for example, preset first threshold value and default second threshold are 10, alternatively, preset first threshold value is 10
It is 12 with default second threshold.
Optionally, the curvature in two faces that the first non-spherical lens 211 includes is contrary sign, to reduce incident image strip
Incident angle.For the first non-spherical lens 211, the face of image strip incidence is convex surface, and exit facet is concave surface, for correcting
The angle of paraxial rays.The curvature in two faces of the second non-spherical lens 212 is jack per line, while second non-spherical lens 212
Two faces are convex surface, for correcting spherical aberration and coma, to improve refracting set to the correction ability of image strip.
Optionally, the circular cone coefficient of the first non-spherical lens 211 is not equal to 0, the circular cone coefficient of the second non-spherical lens 212
Equal to 0.
Optionally, the diopter of the first non-spherical lens 211 is negative, and the diopter of the second non-spherical lens 212 is negative.And
And the positive and negative cooperation with the diopter of other four spherical lenses, light beam of the image strip far from primary optical axis is corrected, to reach
Correct the aberration far from key light shaft portion.
Optionally, the order of the higher order coefficient of the aspherical equation of third non-spherical lens 221 is greater than or equal to default the
Three threshold values, the order of the higher order coefficient of the aspherical equation of the 4th non-spherical lens 222 are greater than or equal to default 4th threshold value, by
In when the order of the higher order coefficient of aspherical equation is higher, the shape that the curved surface of aspherical equation includes is more complicated, to image
The correction ability of the light of light beam is better, but manufacture is also more difficult, and cost is higher, rectifys in order to not influence to image strip
Just, also not to big difficulty is caused, the order of the higher order coefficient of aspherical equation can be determined according to the actual situation.
Or default third threshold value and default 4th threshold value can be configured in conjunction with the other configurations situation of refracting set, preset third
Threshold value can be equal to default 4th threshold value, for example, default third threshold value and default 4th threshold value are 10, alternatively, default third
Threshold value is 13 and default 4th threshold value equal 14；
Optionally, the curvature in two faces of third non-spherical lens 221 is jack per line, for third non-spherical lens 221, image light
The face of beam incidence is concave surface, and another side is convex surface, mainly corrects aberration, and the curvature in two faces of the 4th non-spherical lens 222 is
Contrary sign, while two faces of the 4th non-spherical lens 222 are concave surface, mainly correct Off-axis aberrations, picture distortion；
Optionally, the circular cone coefficient of third non-spherical lens 221 is equal to 0, and the circular cone coefficient of the 4th non-spherical lens 222 is equal to 0；
Optionally, the diopter of third non-spherical lens 221 is positive, and the diopter of the 4th non-spherical lens 222 is positive.And with
The positive and negative cooperation of the diopter of other four spherical lenses corrects light beam of the image strip far from primary optical axis, to reach correction
Aberration far from key light shaft portion.
In addition, preset first threshold value, default second threshold, default third threshold value and default 4th threshold value can be same
Default value, or different numerical value.
Due to non-spherical lens compared with spherical lens compared to there is better curvature, aspheric and lens are from lens centre to edge
Continual curvature changes, so that light converges to same point, substantially eliminates spherical aberration caused by spherical lens.So the
One non-spherical lens 211, the second non-spherical lens 212, third non-spherical lens 221 and the 4th non-spherical lens 222 can be big
The big image quality for improving refracting set.Specifically, the first non-spherical lens 211 and the 4th non-spherical lens 222 for reducing
Coma and astigmatism, the second non-spherical lens 212 and third non-spherical lens 221 are for improving big visual field resolution ratio.
In addition, for non-spherical lens, it is stronger to the correction ability of aberration when the thickness of non-spherical lens is thicker.But
It is the thickness for considering to combine selection non-spherical lens in practical applications the problems such as manufacture difficulty and production cost, so that selection
Non-spherical lens have good aberration correction ability, manufacture difficulty will not be caused big, the problems such as production cost is big.Than
Such as, third non-spherical lens 221 with a thickness of T, meet range 6mm < T < 12.5mm.
And if most lens all select non-spherical lens in refracting set, refracting set can be greatly increased
Therefore manufacturing cost under the premise of not influencing imaging, part lens can also be selected as spherical lens, to reduce manufacture
Cost.
It optionally, can also be by the first non-spherical lens 211 under the premise of birefringence microscope group imaging effect influences less
It is set as spherical lens.
In the combination of non-spherical lens and spherical lens included by above-mentioned first lens group 210 and the second lens group 220,
The position of non-spherical lens is other aspherical other than the first non-spherical lens 211 can be exchanged with adjacent spherical lens
Lens position can not preferably be exchanged.Above-mentioned spherical lens and non-spherical lens cooperate, and correct image strip, jointly to reach
To the effect for improving imaging effect.
In a specific implementation, third spherical lens 215 and the 4th spherical lens 216 it is glued be an entirety, obtain the
One veneer, the refractive index of third spherical lens 215 are greater than the refractive index of the 4th spherical lens 216, third spherical lens 215
Abbe number of the Abbe number less than the 4th spherical lens 216.Wherein, refractive index is used to indicate the extent of refraction of lens on light line, when
When refractive index is bigger, extent of refraction is bigger, therefore, gets over during refracting set imaging to the light splitting effect of image strip
Greatly.Wherein, Abbe number is for indicating lens medium to the degree of dispersion of light, and Abbe number is lower, and dispersion is more severe, thus refractive index
It is bigger.
And it is optional, the 6th spherical lens 224 and 225 gluing of the 7th spherical lens are an entirety, obtain the second glue
Zoarium, refractive index of the refractive index less than the 7th spherical lens 225 of the 6th spherical lens 224, the Abbe of the 6th spherical lens 224
Number is greater than the Abbe number of the 7th spherical lens 225.
And it is optional, the 8th spherical lens 226 and 227 gluing of the 9th spherical lens are an entirety, obtain third glue
Zoarium, the refractive index of the 8th spherical lens 226 are greater than the refractive index of the 9th spherical lens 227, the Abbe of the 8th spherical lens 226
Abbe number of the number less than the 9th spherical lens 227.
The first veneer in the example above, the second veneer and third veneer, for improving the difference of refracting set
The spherical aberration of spectrum, and the axial chromatic aberration of birefringence microscope group, axial chromatic aberration of hanging down are corrected.It is each included by each veneer
Mirror is made of the material of different Abbe numbers, and there are different dispersions to different spectrum for the material of different Abbe numbers, and by with
Curvature match reaches the function of correction color difference.
And optional, the first non-spherical lens 211, the second non-spherical lens 212, third non-spherical lens 221 and the
Four non-spherical lenses 222 are axisymmetric aspheric surface lens, due to the regular shape of axisymmetric aspheric surface lens, system easy to process
It makes, so when the first non-spherical lens 211, the second non-spherical lens 212, third non-spherical lens 221 and the 4th are aspherical
It is easy to process when mirror 222 is axisymmetric aspheric surface lens, reduce production cost.
And refracting set further includes aperture diaphragm (not shown), aperture diaphragm is located at the first lens group 210 and
Between two lens groups 220, specifically, between the second non-spherical lens 212 and third non-spherical lens 221.Aperture diaphragm
It is in same optical axis with refracting set, for limiting the light passing amount of refracting set, so that the light passing amount of image strip is limited in most
The case where being conducive to imaging is interior, to improve the effect of imaging.
And reflecting mirror 230 will be for that will pass through the image strip after the first lens group 210 and the correction of the second lens group 220
It is reflected on projection screen.
Optionally, reflecting mirror 230 is non-spherical reflector (plane of incidence of non-spherical reflector is concave surface) or free form surface
Reflecting mirror.When reflecting mirror 230 is non-spherical reflector, reflecting mirror 230 is used for the curvature of field and distortion of correcting image light beam.
Using the ultra-short focus projection lens of the embodiment of the present invention, while realizing ultrashort out-of-focus projection, can reach preferable
The purpose of aberration correction, so that image quality is good, B, Fig. 2 B are a kind of ultrashort out-of-focus projection's mirrors exemplified according to implementation referring to fig. 2
The imaging effect schematic diagram of head.As shown in Figure 2 B, cross spider (+) is pre-imaging position in Fig. 2 B, and cross is (x) actual imaging position
It sets, then cross and the higher distortion for illustrating imaging of cross spider intersection point registration are more unobvious in Fig. 2 B.By Fig. 2 B it is found that imaging fork
Number higher with cross spider intersection point registration, therefore, the image deformation degree of the camera lens is lower, i.e., aberration is corrected, Neng Gouti
For the imaging effect of high quality.
And since this camera lens has preferable aberration correction ability, analytic ability is promoted, and also can be applied to high parsing
It in the projection lens of degree, for example can be used for parsing the image of 4K resolution ratio, allow projection screen that the figure of more high definition is presented
Picture promotes user experience.
The embodiment of the present invention is provided in ultra-short focus projection lens, and refracting set uses two lens groups, and framework is succinct, eyeglass
Quantity is few, and can reach preferable aberration correction effect by the non-spherical lens and spherical lens of setting limited quantity.Its
In, the first lens group and the second lens group include two non-spherical lenses, and non-spherical lens has well to image strip
Correction ability especially has preferable aberration correction ability to big visual-field beam, improves the resolving power of camera lens, therefore,
On the one hand the setting of above-mentioned non-spherical lens reduces the quantity for the spherical lens for including in camera lens, simplify the structure of camera lens,
And the focal length of entire camera lens is shorter, can be applied in short focus projection and high-res projection.
Embodiment three,
The embodiment of the present invention three provides a kind of laser projection device, can be using the ultrashort of above-described embodiment one or embodiment two
Out-of-focus projection's camera lens.
Specifically, as shown in Figure 3A, Fig. 3 A is a kind of configuration diagram of laser projection device, which can
To be laser movie theatre perhaps laser television or other laser projection instruments, as shown in Figure 3A, including laser light source 30, ray machine
31, ultra-short focus projection lens 32, projection screen 33.Laser light source 30 is that ray machine 31 provides illuminating bundle, and laser light source 30 can be with
It is the mixing light source of monochromatic or two-color laser light source and fluorescent light source composition, is also possible to three color laser light sources.Ray machine 31 is used for
Image strip is formed after being modulated according to image processing signal to illuminating bundle, specifically, ray machine 31 includes light valve and light valve
Lighting system, light valve are a kind of optical modulation devices, can be dmd chip either liquid crystal light valve, in DLP projection, light valve is
Dmd chip.Image strip is reflexed to ultra-short focus projection lens 32 by light valve, and ultra-short focus projection lens 32 are used for image strip school
The imaging of projection screen 33 is projected to after positive amplification.Fig. 3 B is the light path schematic diagram of laser projection device of the embodiment of the present invention, is such as schemed
Shown in 3B, after the camera lens in laser projection device projects light beams upon reflecting mirror 323, light beam is carried out again by reflecting mirror 323 anti-
It is incident upon re-imaging on projection screen 33, by the application of ultra-short focus projection lens, realizes the throwing of ultrashort burnt large scale picture
Shadow.
In one embodiment, the offset of light valve biasing 32 primary optical axis of ultra-short focus projection lens meets: 1.2 < A/B <
1.5, wherein the A refers to the height of the light valve, and the B refers to primary optical axis to the distance of the upper end of light valve.It should be noted that
Deviate the quantitative response degree of the optical axis of projected picture offset projection camera lens.Specifically, projected picture is inclined when offset is bigger
The distance for moving the optical axis of projection lens is bigger, so can design according to different needs not when designing projection imaging system
With the projection imaging system of offset.
In a specific implementation, in ray machine as shown in Figure 4 A and camera lens light path system schematic diagram, comprising: light valve 410 surpasses
Short focus projection lens 400, ultra-short focus projection lens 400 include refracting set 420 and 430, and reflection microscope group 430.And
It further include mobile eyeglass 411 between light valve 410 and ultra-short focus projection lens 400, mobile eyeglass 411 is vibrated with predeterminated frequency, and
In previous moment and current time transmission or reflection image strip, be respectively at different positions so as to previous moment and
The image strip of current time transmission or reflection, which misplaces, to be overlapped.
Light valve 410 is used to modulate the illuminating bundle come in projector from light-source system propagation, so that light valve 410 is according to figure
As processing signal generation image strip, and image strip directive is moved into eyeglass 411.
Optionally, light valve 410 be digital micromirror elements (English: Digital Micromirror Device, referred to as:
DMD), DMD can be 4K resolution ratio or 3K resolution ratio.
Specifically, light valve 410 includes reflection mirror array and control circuit, when light valve 410 is by illumination, control circuit control
The light beam that reflection mirror array reflection source system processed is launched generates image strip.How related light valve 410 specifically generates image
Light beam is the prior art, not described in detail herein.
Mobile eyeglass 411 is located between light valve 410 and the first lens group 440, and mobile eyeglass 411 is plate glass or reflection
Mirror, can be with transmission or reflection image strip.Mobile eyeglass 411 can vibrate, and mobile eyeglass 411 vibrates so that by mobile eyeglass
The 411 corresponding image strip of adjacent two frames projected image is not exclusively overlapped, and carries out staggered superposition, so that the same pixel of directive
Image strip increases, and then improves the resolution ratio of imaging, and since the vibration of mobile eyeglass 411 is so that adjacent two frames perspective view
As corresponding image strip is slightly misaligned, so that it is excessively more smooth between pixel, so that the fine and smooth sense of imaging is improved,
And then image quality is improved, realize high-resolution image quality, concrete methods of realizing is as follows:
Mobile eyeglass 411 includes driving assembly, and driving assembly can be vibrated according to preset frequency, when driving assembly vibrates
When, driving assembly drives the mobile vibration of eyeglass 411, and (B referring to fig. 4, Fig. 4 B are a kind of mobile eyeglasses 411 exemplified according to implementation
And its vibrating effect schematic diagram).In addition, adjacent two frames projected image includes first frame projected image and the second frame projected image
(first frame projected image and the second frame projected image are obtained by same frame picture breakdown).When the first frame projected image is corresponding
Image strip and the second frame projected image corresponding image strip when passing through the mobile eyeglass 411 respectively, the shifting
Index glass piece 411 is in different location.Specifically, image to be shown has first resolution, image-signal processing system will be to
The picture breakdown of display is at two field pictures, first frame image and the second frame image, and wherein first frame image and the second frame image have
There is second resolution, first resolution is greater than second resolution.When first frame image and the second frame image are expert at resolution ratio and column
When resolution ratio and the inconsistent resolution ratio of DMD row and column, need the row resolution ratio of image to be shown and column split rate tune first
It is whole for DMD row resolution ratio, column split rate multiple after, then carry out the decomposition of first frame image and the second frame image.After decomposition, the
The row, column resolution ratio of one frame image and the second frame image is identical, and with the row, column resolution ratio of DMD at multiple proportion, the multiple
Relationship is preferably 1 times.It is mobile when the corresponding image strip of first frame projected image is by mobile eyeglass 411 in display
Eyeglass 411 is in first position；When the corresponding image strip of the second frame projected image is by mobile eyeglass 411, mobile eyeglass
411 are in the second position, first position and second position difference, so that the corresponding image strip of the second frame projected image
The propagation path of propagation path image strip corresponding from the first frame image is different, so that the second frame projected image pair
The image strip answered image strip corresponding with first frame projected image is not exclusively overlapped.For example, two adjacent frame projected images
For projected image A and projected image B, first position vibrates generation towards first direction by moving eyeglass 411, and the second position is by moving
Index glass piece 411 is vibrated towards second direction to be generated, specifically, when the corresponding image strip of projected image A is by mobile eyeglass 411
When, mobile eyeglass 411 (vibrates) towards first direction vibration for example, mobile eyeglass 411 is upward；When the corresponding shadow of projected image B
When as light beam by mobile eyeglass 411, mobile eyeglass 411 is towards second direction vibration (for example, the vibration downwards of mobile eyeglass 411
It is dynamic) so that the corresponding image strip of projected image B image strip corresponding with projected image A is not exclusively overlapped namely that
This is slightly misaligned, and further, the corresponding image strip of projected image A is introduced into ultra-short focus projection lens 400, then perspective view
As the corresponding image strip of B enters ultra-short focus projection lens 400, due to the time between before and after projected image A and projected image B
Interval is very short, so projected image A and the corresponding projected image of projected image B are almost superimposed and displayed on projection screen.By
It is slightly misaligned in the two, and is overlapped and is projected on projection screen, so that projected image A and projected image B are right on the projection screen
The excessively more smooth and exquisiteness for the pixel between projected image answered, improves the resolution ratio of projected image, to improve throwing
The quality of shadow image.
In addition, it is necessary to explanation is that first frame projected image and the second frame projected image are obtained by same frame picture breakdown,
So can achieve the increased purpose of Pixel Information amount, and then imaging could be improved when projecting to projection screen Overlapping display
Resolution ratio.
In addition, though projected image A and the corresponding projected image of projected image B can divide front and back display on the projection screen,
But the display time difference very little due to projected image A and the corresponding projected image of projected image B on the projection screen, user cannot
Resolved projection image A and the corresponding projected image of projected image B are to be separated display, thus, projected image A and projected image
The corresponding projected image of B, which can be approximated to be, is shown as a width projected image.
It cooperates in addition, the embodiment of the present invention passes through mobile eyeglass 411 with light valve 410, realizes image superposition, Jin Erti
The high resolution ratio of image, the corresponding present invention implement the ability that the ultra-short focus projection lens 400 provided have high-res, with
The high-definition picture that mobile eyeglass 411 is provided with the mutual cooperation of light valve 410 is parsed, and is clearly projected on projection screen.
Projection imaging system provided in an embodiment of the present invention includes light valve 410, mobile eyeglass 411 and ultra-short focus projection lens
400, light valve 410 is used to generate image strip, and by the mobile eyeglass 411 of image strip directive, by mobile eyeglass 411 to image light
Shu Jinhang vibration, changes the position of image strip, to mention so that the image strip of the two field pictures of same frame picture breakdown is not located
In same position, and then the fine and smooth sense of imaging is improved, finally, by the correction of ultra-short focus projection lens 400 and magnified image light beam,
Image strip is projected into projection screen.In embodiments of the present invention, ultra-short focus projection lens 400 are described in embodiment two
It is illustrated for example.
Specifically, ultra-short focus projection lens 400 successively include: the first lens group along the direction of image strip entrance propagation
440, the second lens group 430 and reflecting mirror 440.
First lens group 440, the second lens group 430 and reflecting mirror 440 are in same optical axis 401.410 center-biased of light valve
In the optical axis 401 of ultra-short focus projection lens 400.The offset that light valve 410 biases optical axis 401 meets: 1.4 < A/B < 1.5, wherein
A is the height in the face of light valve 410, and B is the distance of the upper end in the face that optical axis 401 arrives light valve 410.
It should be noted that deviating the journey of the optical axis 401 of quantitative response projected picture offset ultra-short focus projection lens 400
Degree.Specifically, the distance that projected picture deviates the optical axis 401 of ultra-short focus projection lens 400 is bigger when offset is bigger.
Specifically, the lens of the first lens group 420 and the second lens group 430 composition, reflection microscope group 440 can be found in embodiment
The description of two contents, details are not described herein.
Optionally, A referring to fig. 4, projection imaging system further include: total-reflection prism group 450, total-reflection prism group 450 are set
It is placed between light valve 410 and mobile eyeglass 411, total-reflection prism group 450 is used for so that the image strip projected from light valve 410 becomes
For collimated light beam, to improve the smoothness being ultimately imaged.
Optionally, total-reflection prism group 460 include two glued total reflection prisms, respectively the first total reflection prism and
Second total reflection prism 4.The light beam come, first the first total reflection prism of directive are penetrated from light-source system, when light beam directive first is complete
When reflecting prism, light beam is totally reflected, and the light beam directive light valve 410 after being totally reflected, after being totally reflected
When light beam directive light valve 410,410 the reflected beams of light valve simultaneously generate image strip, then by the image strip of generation from light valve 410
Directive total-reflection prism group 450, when image strip is from 410 directive total-reflection prism group 450 of light valve, image strip does not occur entirely
Reflection, but directly by the mobile eyeglass 411 of image strip directive.
Since the first total reflection prism is totally reflected its own light beam of directive, a total reflection rib is used
Mirror can reflect the light on light valve 410, without carrying out multiple reflections by multiple normal mirrors, and then subtract
The usage quantity for having lacked normal mirror greatly reduces the volume of ultra-short focus projection lens 400；In addition, total-reflection prism group
450 to become being parallel to 401 uniform beam of optical axis by light beam therein, it therefore meets the demand of telecentric beam path, due to
So that the image strip that directive light valve 410 generates becomes uniformly, to also improve the quality of projected image.
Since total reflection prism has the function of projecting in parallel to the light injected in it, work as the not parallel of light valve 410
When image strip directive total-reflection prism group 450, total reflection prism 450 projects image strip in parallel, so that image
Light beam becomes uniformly, to improve the smoothness of imaging.
In addition, since total reflection prism can project the light beam injected in it from another direction, so in order to enable shadow
As light beam can may include 4 total reflections by the mobile eyeglass 411 of 460 directive of total-reflection prism group, total-reflection prism group 460
Prism.
In addition, refracting set and reflection microscope group generate positive diopter, wherein the first lens group 420 and the second lens group
The refractor group total length of 430 compositions is L1, and the spacing between refracting set and reflection microscope group 440 is L2, and L1, L2 meet:
0.65 < L1/L2 < 0.7, wherein refractor group length is the total length of the first lens group 420 and the second lens group 430, refraction
Spacing between lens group and reflection microscope group is the second lens group 430 close to one end of reflecting mirror 440 to the length of reflecting mirror 440
Degree.
In addition, the back work distance of ultra-short focus projection lens 400 is from being greater than 36 millimeters, to stay for holding movable eyeglass 411
Enough spaces out.Wherein, (first thoroughly for first lens of the back work distance from light valve face and projection lens for light valve 410
The distance between the incidence surface of mirror).
In addition, it is necessary to which explanation reserves enough for mobile eyeglass 411 first in specifically design projection imaging system
Space, that is, reserve sufficiently long back work distance from but since the subtended angle of image strip is constant, so longer back work distance
Defection leads to optical axis of the image strip further away from projection lens, so will cause larger aberration, therefore states projection lens in design
It when head, can also consider since long back work distance is from bring aberration, and projection lens correction is set due to long back work distance
From bring aberration.
In addition, distance, that is, camera lens back work distance of light valve face first lens into the first lens group is from BL, refracting telescope
Spacing between group and reflection microscope group 440 is L2, and wherein the range of the ratio of BL/L2 is 0.2-0.35, for further limiting
Back work distance from length to avoid back work distance from too long, cause aberration too big, so as to cause the setup cost of projection lens
Excessively high problem.
Ray machine in the embodiment of the present invention and in the optical system of camera lens, camera lens has preferable aberration correcting capability, figure
As resolution is high, and can reserve back work distance from, can holding movable eyeglass, meet the condition in low resolution DMD
Under, the Projection Display of high-resolution or high-definition image may be implemented.
And the range of the projection ratio of laser projection device provided in an embodiment of the present invention is 0.2-0.3.Projection lens
The range for projecting ratio is 0.2-0.3, to achieve the purpose that ultrashort out-of-focus projection.In another sample instance, projection imaging system
Projection is than being 0.24-0.25.
In addition, the modulation tansfer function of projection lens provided by the invention be greater than 60%, resolution ratio up to 93 lines it is right/millisecond, have
Imitating focal length is -3.38 or -3.47, and offset 142%-150%, projection image is having a size of 80-120.
In addition, laser projection device is unable to satisfy the projection demand of the corresponding image strip of high-resolution 4K image now, and
The ultra-short focus projection lens for including in laser projection device provided in an embodiment of the present invention pass through each spherical lens and aspherical
The cooperation of mirror lens has preferable aberration correction ability, can parse the corresponding image strip of high-resolution image, so that
The image of more high definition can be presented in projection screen, and projected picture quality is high, promote user experience.
And the laser projection device provided in the embodiment of the present invention, including light valve, mobile eyeglass and projection lens.It moves
Index glass piece is overlapped the corresponding image strip of adjacent two frames projected image by vibrating eyeglass not exclusively, due to image strip
Not exclusively overlapping so that the image strip of the same pixel of directive increases, and then improves the resolution ratio of imaging, and due to moving lens
The vibration of piece so that the corresponding image strip of adjacent two frames projected image is slightly misaligned so that between pixel excessively more
Smoothly, to improve the fine and smooth sense of imaging, and then image quality is improved；In addition, projection lens packet provided in an embodiment of the present invention
At least four non-spherical lenses are included, being compared due to non-spherical lens has better calibration capability to aberration with spherical lens, so
Projection lens includes the quantity that can greatly reduce the spherical lens for including after non-spherical lens in projection lens, is not only simplified
The structure of projection lens also substantially increases the resolution ratio of projection lens, is further conducive to realize high-resolution projected image
Projection.
Those skilled in the art will readily occur to other realities of the invention after considering the invention of specification and practice here
Apply scheme.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or suitable
The variation of answering property follows general principle of the invention and including the undocumented common knowledge in the art of the present invention or used
Use technological means.The description and examples are only to be considered as illustrative, and true scope of the invention is referred to by following claim
Out.
It should be understood that the present invention is not limited to the precise structure already described above and shown in the accompanying drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is limited only by the attached claims.
Claims (10)
1. a kind of laser projection device, which is characterized in that including laser light source, for providing illuminating bundle；Light valve, for institute
It states after illuminating bundle is modulated and forms image strip；Projection lens, for receiving the image strip and to the image light
Projection screen imaging is projected to after beam alignment amplification；
It and further include mobile eyeglass, shape after the light valve is also used to modulate between the light valve and the projection lens
At image strip directive described in mobile eyeglass,
The mobile eyeglass with predeterminated frequency vibrate so that by the movement eyeglass the corresponding image of adjacent two frames projected image
Light beam staggered superposition, and enter the projection lens.
2. laser projection device according to claim 1, which is characterized in that the mobile eyeglass is plate glass or reflection
Mirror.
3. laser projection device according to claim 1, which is characterized in that the light valve biases ultrashort out-of-focus projection's mirror
Head primary optical axis, offset meet: 1.2 < A/B < 1.5, wherein the A refers to the height of the light valve, and the B refers to the primary optical axis
To the distance of the upper end of the light valve.
4. laser projection device according to claim 1, which is characterized in that the adjacent two frames projected image includes first
Frame projected image and the second frame projected image, the first frame projected image and the second frame projected image are by same frame image
Decomposition obtains.
5. laser projection device according to claim 4, which is characterized in that when the corresponding shadow of the first frame projected image
When passing through the mobile eyeglass as light beam, the mobile eyeglass is in first position；When the corresponding image of the second frame projected image
When light beam passes through the mobile eyeglass, the mobile eyeglass is in the second position, wherein the first position and the second position are not
Together.
6. laser projection device according to claim 4, which is characterized in that the first frame projected image and the second frame are thrown
The row, column resolution ratio of shadow image is identical, and with the row, column resolution ratio of the light valve at multiple proportion.
7. laser projection device according to claim 1, which is characterized in that the ultra-short focus projection lens are along image light
The direction of beam entrance propagation successively includes: the first lens group, the second lens group and reflecting mirror, wherein first lens group,
Two lens groups and reflecting mirror are in same optical axis, and the mobile eyeglass is between the light valve and first lens group.
8. laser projection device according to claim 6, which is characterized in that first lens group, the second lens group group
At refracting set, wherein the distance of the light valve face first lens into first lens group is BL, with the refracting telescope
Spacing between group and reflecting mirror is L2, and the ratio range of BL/L2 is 0.2-0.35.
9. laser projection device according to claim 1 or claim 7, which is characterized in that it further include total-reflection prism group, it is described complete
Reflecting prism group is set between the light valve and the mobile eyeglass.
10. laser projection device according to claim 1 or 3, which is characterized in that the projection lens is ultrashort out-of-focus projection
Camera lens projects ratio between 0.2 ~ 0.3.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610413A (en) * | 2003-10-23 | 2005-04-27 | 惠普开发有限公司 | Display system for an interlaced image frame with a wobbling device |
| JP2005250123A (en) * | 2004-03-04 | 2005-09-15 | Seiko Epson Corp | Projector |
| JP2011221341A (en) * | 2010-04-12 | 2011-11-04 | Nikon Corp | Floodlight |
| CN103777314A (en) * | 2012-10-25 | 2014-05-07 | 扬明光学股份有限公司 | Wide-angle projection lens |
| CN104698574A (en) * | 2013-12-05 | 2015-06-10 | 台达电子工业股份有限公司 | Wide-angle projection optical system |
| CN204405927U (en) * | 2014-12-17 | 2015-06-17 | 深圳市亿思达科技集团有限公司 | Ultrashort out-of-focus projection camera lens |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482689A (en) * | 2009-02-12 | 2009-07-15 | 复旦大学 | Ultra-thin back projection optical system |
| CN103135238A (en) * | 2013-02-27 | 2013-06-05 | 中国科学院西安光学精密机械研究所 | Projection optical system |
| JP6221266B2 (en) * | 2013-03-04 | 2017-11-01 | 株式会社リコー | Projection optical system and image display device |
| CN105759543A (en) * | 2014-12-17 | 2016-07-13 | 深圳市亿思达科技集团有限公司 | Projection optical system and projection device |
| CN105158884B (en) * | 2015-10-10 | 2018-03-23 | 浙江大学 | A kind of ultrashort out-of-focus projection's lens system |
| CN105785557B (en) * | 2016-03-10 | 2018-05-01 | 浙江水晶光电科技股份有限公司 | A kind of ultrashort out-of-focus projection's object lens |
-
2016
- 2016-08-17 CN CN201610675937.8A patent/CN106054359B/en active Active
- 2016-08-17 CN CN201811211309.XA patent/CN109270682A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1610413A (en) * | 2003-10-23 | 2005-04-27 | 惠普开发有限公司 | Display system for an interlaced image frame with a wobbling device |
| JP2005250123A (en) * | 2004-03-04 | 2005-09-15 | Seiko Epson Corp | Projector |
| JP2011221341A (en) * | 2010-04-12 | 2011-11-04 | Nikon Corp | Floodlight |
| CN103777314A (en) * | 2012-10-25 | 2014-05-07 | 扬明光学股份有限公司 | Wide-angle projection lens |
| CN104698574A (en) * | 2013-12-05 | 2015-06-10 | 台达电子工业股份有限公司 | Wide-angle projection optical system |
| CN204405927U (en) * | 2014-12-17 | 2015-06-17 | 深圳市亿思达科技集团有限公司 | Ultrashort out-of-focus projection camera lens |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020228595A1 (en) * | 2019-05-14 | 2020-11-19 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| CN112305700A (en) * | 2019-07-29 | 2021-02-02 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| CN112305700B (en) * | 2019-07-29 | 2022-09-09 | 青岛海信激光显示股份有限公司 | Projection lens and laser projection device |
| EP3786705A1 (en) * | 2019-08-30 | 2021-03-03 | Coretronic Corporation | Projection device |
| US11126075B2 (en) | 2019-08-30 | 2021-09-21 | Coretronic Corporation | Projection device |
| CN114339170A (en) * | 2020-09-30 | 2022-04-12 | 青岛海信激光显示股份有限公司 | Laser projection equipment and correction method of projected image thereof |
| CN114339170B (en) * | 2020-09-30 | 2023-12-08 | 青岛海信激光显示股份有限公司 | Laser projection device and correction method for projected image thereof |
| CN112738491A (en) * | 2020-12-29 | 2021-04-30 | 视田科技（天津）有限公司 | Correction method of projection reflection picture |
| CN113963644A (en) * | 2021-10-29 | 2022-01-21 | 青岛海信激光显示股份有限公司 | Laser display device, image display method thereof and readable storage medium |
| WO2024136393A1 (en) * | 2022-12-21 | 2024-06-27 | 엘지이노텍 주식회사 | Projection device and electronic device including same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106054359B (en) | 2018-11-23 |
| CN106054359A (en) | 2016-10-26 |
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Application publication date: 20190125 |