CN208654446U - A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device - Google Patents
A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device Download PDFInfo
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- CN208654446U CN208654446U CN201821259347.8U CN201821259347U CN208654446U CN 208654446 U CN208654446 U CN 208654446U CN 201821259347 U CN201821259347 U CN 201821259347U CN 208654446 U CN208654446 U CN 208654446U
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- optical system
- display device
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- longitudinal direction
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Abstract
The utility model discloses a kind of off-axis three reflecting optical systems in the longitudinal direction of vehicle-mounted head-up display device; the main points of its technical scheme are that including luminescent screen; the diagonally forward of the luminescent screen is equipped with secondary mirror; the diagonally forward of the secondary mirror is equipped with principal reflection mirror; the oblique upper of the principal reflection mirror is equipped with protection glass, and windshield is located at the top of protection glass.The utility model reaches ideal imaging effect by reasonable angle offset, and keeps structure compacter, reduces the occupied space of entire display device for mounting on vehicle, improves customer for the use demand of automobile large space.The utility model compared to common HUD for, the distortion of all visual fields of the utility model all controls preferably, each visual field distortion network in meridian and sagitta of arc direction distortion value it is all smaller, ensure that the using effect of high quality.
Description
[technical field]
The utility model relates to a kind of off-axis three reflecting optical systems in the longitudinal direction of vehicle-mounted head-up display device.
[background technique]
With the development of science and technology, automobile industry is carrying out variation with rapid changepl. never-ending changes and improvements, and automotive safety is asked at the same time
Topic is also more and more important, and can bow the vehicle-mounted new line watched onboard instruments information and sight is caused to leave front to avoid driver
Display device, that is, HUD has been widely used for automotive field.It mainly passes through the reflection in optical system for the picture of luminescent screen
It projects on the windshield, so that driver is not necessarily to divert sb.'s attention the information that can be read in instrument, to greatly improve
The safety driven.
At present although HUD on the market has accomplished preferable image quality, but it is difficult to ensure that eye case diameter on a large scale, i.e.,
Range workable for human eye is only fixed in lesser spatial dimension, will when mobile on direction up and down occurs for body
There is the phenomenon that fuzzy pictures.Simultaneously when car speed changes, when human eye is moved forward and backward, focus shifts, and can also produce
The bad problem of raw image quality.
The utility model is namely based on what such case was made.
[utility model content]
The utility model aim is to overcome the deficiencies in the prior art, provide a kind of vehicle-mounted head-up display device it is longitudinal from
Three reflecting optical system of axis, main purpose are to guarantee biggish Entry pupil diameters i.e. eye case diameter by the optimization in design, and work as
Human body back-and-forth motion is able to maintain more visible image quality when speed changes, and improves the service performance of HUD.
The utility model is achieved through the following technical solutions:
A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device, it is characterised in that: it include luminescent screen L7,
The diagonally forward of the luminescent screen L7 is equipped with secondary mirror L6, and the diagonally forward of the secondary mirror L6 is equipped with principal reflection mirror L5, described
The oblique upper of principal reflection mirror L5 is equipped with protection glass L4, and windshield L3 is located at the top of protection glass L4.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, it is characterised in that: the protection
Glass L4 is the lens without focal power；Principal reflection mirror L5 is made by the concave mirror with positive light coke and of plastic material；
Secondary mirror L6 is the reflecting mirror with positive light coke.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, it is characterised in that: principal reflection mirror
L5 reflecting surface is the polynomial free form surface of XY, and meets expression formula: 530mm≤R5≤ 550mm, wherein R5For principal reflection mirror L5
Y radius.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, it is characterised in that the optical system
Meet expression formula: 130mm≤D2≤ 160mm, wherein D2For the diameter of entrance pupil L2, i.e., workable eye case diameter.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, it is characterised in that the optical system
Meet expression formula:
- 3%≤Rad Dist≤10%；
- 4%≤Tan Dist≤10%；
Wherein, Rad Dist is each visual field sagitta of arc direction distortion value in distortion network, and Tan Dist is each in distortion network
Visual field meridian direction distortion value.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, it is characterised in that the optical system
Meet expression formula:
1.5°≤θ2≤ 2.5 °, wherein θ2Offset for entrance pupil L2 relative to optical axis.
Compared with prior art, the utility model has the following advantages:
1, the utility model reaches ideal imaging effect by reasonable angle offset, and keeps structure compacter, subtracts
Customer is improved for the use demand of automobile large space in the small occupied space of entire display device for mounting on vehicle.
2, the utility model compared to common HUD for, the distortion of all visual fields of the utility model all controls preferably, each
Visual field meridian and sagitta of arc direction distortion value in distortion network is all smaller, ensure that the using effect of high quality.
3, biggish Entry pupil diameters, the diameter D of entrance pupil L2 are used when the utility model designs2Up to 130mm-160mm；Tool
There is bigger eye case diameter, i.e., when human body slightly moves, still there is more visible image quality.
4, the utility model works as distance T of the object plane L1 to entrance pupil L2 on optical axis12With entrance pupil L2 to windshield L3 in light
Distance T on axis23Change simultaneously, and when variation range is in ± 200mm, MTF curve is good, imaging clearly.I.e. when speed becomes
Change, when human body is moved in the longitudinal direction in ± 200mm, can guarantee clear use, has reached the use effect of zoom system, pancreatic system
Fruit.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of the utility model HUD optical system；
Fig. 2 is the distortion network of the utility model HUD optical system；
Fig. 3 is the MTF curve figure of the utility model HUD optical system.
In figure: L1 is object plane；L2 is entrance pupil；L3 is windshield；L4 is protection glass；L5 is principal reflection mirror；L6 is secondary
Reflecting mirror；L7 is luminescent screen.
[specific embodiment]
The utility model technical characteristic is described in further detail in order to the field technology people with reference to the accompanying drawing
Member it will be appreciated that.
A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device, includes luminescent screen L7, the luminescent screen
The diagonally forward of L7 is equipped with secondary mirror L6, and the diagonally forward of the secondary mirror L6 is equipped with principal reflection mirror L5, the principal reflection mirror L5
Oblique upper be equipped with protection glass L4, windshield L3 be located at protection glass L4 top.
It is on-vehicle information needed for driver on luminescent screen L7, the light of luminescent screen L7 diverging reaches secondary mirror in Fig. 1
L6 converges in principal reflection mirror L5 through secondary mirror L6 reflection, and light is shown after principal reflection mirror L5 reflection through protection glass L4
It is received on windshield L3, then by entrance pupil (human eye) L2.
The utility model reaches ideal imaging effect by reasonable angle offset, and keeps structure compacter, reduces
Customer is improved for the use demand of automobile large space in the entire occupied space of display device for mounting on vehicle.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, the protection glass L4 are unglazed
The lens of focal power；Principal reflection mirror L5 is made by the concave mirror with positive light coke and of plastic material；Secondary mirror L6 is
Reflecting mirror with positive light coke.
Therefore in addition to windshield L3, only there are two optical elements to have focal power, significantly reduces processing cost, and
And principal reflection mirror L5 uses plastic material, has also greatly saved the cost of raw material.Guaranteeing compared to HUD on the market into image quality
Occupy very strong cost advantage under the premise of amount.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, principal reflection mirror L5 reflecting surface are XY
Polynomial free form surface, and meet expression formula: 530mm≤R5≤ 550mm, wherein R5For the Y radius of principal reflection mirror L5.
The utility model is optimized using free form surface, is optimized compared to other using spherical surface
HUD, can preferably aberration correction, the imaging effect of high quality can be reached in the case where number of elements is less.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, the optical system meet expression
Formula: 130mm≤D2≤ 160mm, wherein D2For the diameter of entrance pupil L2, i.e., workable eye case diameter.
The eye case diameter bigger compared to the general HUD in market is realized, i.e. human eye can be obtained when the range is moved
To picture is clearly imaged, solve the problems, such as common HUD when human body slightly move after picture with regard to unsharp.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, the optical system meet expression
Formula:
- 3%≤Rad Dist≤10%；
- 4%≤Tan Dist≤10%；
Wherein, Rad Dist is each visual field sagitta of arc direction distortion value in distortion network, and Tan Dist is each in distortion network
Visual field meridian direction distortion value.The use quality of driver can be improved, guarantee needed for projected picture on the windshield and original
The consistency for showing picture avoids the picture deformation generated by larger distortion, uses abnormal problem.
Work as T12, T23When changing within the scope of ± 200mm simultaneously, MTF curve is good.Wherein, T12Exist for object plane L1 to entrance pupil L2
Distance on optical axis；T23Distance for entrance pupil L2 to windshield L3 on optical axis.T12And T23Change certain distance i.e. mould simultaneously
Anthropomorphic eye is moved forward and backward certain distance, therefore when speed changes, and body is moved forward and backward in ± 200mm, picture is still
Clearly, to can guarantee preferable using effect during brake or speed-raising.
Off-axis three reflecting optical system in longitudinal direction of vehicle-mounted head-up display device as described above, the optical system meet expression
Formula: 1.5 °≤θ2≤ 2.5 °, wherein θ2Offset for entrance pupil L2 relative to optical axis.
The design of this offset is to guarantee that driver uses in order to which the characteristics of human body for agreeing in driving process is designed
It is consistent with normal driving sight angle when HUD, improve the comfortableness and security in use process.
The embodiment has the advantage that compared to other HUD
Biggish Entry pupil diameters, the diameter D of entrance pupil L2 are used when design2Up to 130mm-160mm；With bigger eye case
Diameter when that is, human body slightly moves, still has more visible image quality.
As distance T of the object plane L1 to entrance pupil L2 on optical axis12With distance T of the entrance pupil L2 to windshield L3 on optical axis23
Change simultaneously, and when variation range is in ± 200mm, MTF curve is good, imaging clearly.I.e. when speed changes, human body is preceding
When rear is moved up in ± 200mm, clear use can guarantee, reached the using effect of zoom system, pancreatic system.
For common HUD, the distortion of all visual fields of the utility model is all controlled preferably, and each visual field is in distortion net
Meridian and sagitta of arc direction distortion value are all smaller in network, ensure that the using effect of high quality.
The following are the parameter lists of the utility model embodiment.
The following table 1 is the structural parameters of the utility model:
Table 1
The following table 2 is the eccentric setting parameter of the utility model:
| Surface number | α | β | γ | Partial method |
| Diaphragm | 2.0000 | 0.0000 | 0.0000 | Eccentric and recurrence |
| 2 | 58.3700 | 0.0000 | 10.0000 | Eccentric and bending |
| 3 | 0.0000 | 0.0000 | 0.0000 | Nothing |
| 4 | -33.0000 | 0.0000 | 0.0000 | Eccentric and recurrence |
| 5 | -33.0000 | 0.0000 | 0.0000 | Eccentric and recurrence |
| 6 | 0.0000 | 0.0000 | 0.0000 | Nothing |
| 7 | 17.0238 | -1.4900 | 0.0000 | Eccentric and bending |
| 8 | -45.4291 | 0.0000 | 0.0000 | Eccentric and bending |
| Image planes | -1.0673 | 0.0000 | 3.5000 | Eccentric and recurrence |
Table 2
Embodiment described in the utility model is only the description carried out to preferred embodiments of the present invention, not
Utility model conception and scope is defined, under the premise of not departing from the design concept of the utility model, engineering in this field
The all variations and modifications that technical staff makes the technical solution of the utility model should all fall into the protection model of the utility model
It encloses.
Claims (6)
1. a kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device, it is characterised in that: it include luminescent screen (L7),
The diagonally forward of the luminescent screen (L7) is equipped with secondary mirror (L6), and the diagonally forward of the secondary mirror (L6) is equipped with principal reflection mirror
(L5), the oblique upper of the principal reflection mirror (L5) is equipped with protection glass (L4), and windshield (L3) is located at protection glass (L4)
Top.
2. off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device according to claim 1, it is characterised in that: described
Protecting glass (L4) is the lens without focal power；Principal reflection mirror (L5) is for the concave mirror with positive light coke and by plastic cement material
Material is made；Secondary mirror (L6) is the reflecting mirror with positive light coke.
3. off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device according to claim 1 or claim 2, it is characterised in that:
Principal reflection mirror (L5) reflecting surface is the polynomial free form surface of XY, and meets expression formula: 530mm≤R5≤ 550mm, wherein R5For
The Y radius of principal reflection mirror (L5).
4. off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device according to claim 1 or 2, it is characterised in that
The optical system meets expression formula: 130mm≤D2≤ 160mm, wherein D2For the diameter of entrance pupil (L2), i.e., workable eye case is straight
Diameter.
5. off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device according to claim 1 or claim 2, it is characterised in that should
Optical system meets expression formula:
- 3%≤Rad Dist≤10%；
- 4%≤Tan Dist≤10%；
Wherein, Rad Dist is each visual field sagitta of arc direction distortion value in distortion network, and Tan Dist is each visual field in distortion network
Meridian direction distortion value.
6. off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device according to claim 1 or claim 2, it is characterised in that should
Optical system meets expression formula:
1.5°≤θ2≤ 2.5 °, wherein θ2Offset for entrance pupil (L2) relative to optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821259347.8U CN208654446U (en) | 2018-08-06 | 2018-08-06 | A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821259347.8U CN208654446U (en) | 2018-08-06 | 2018-08-06 | A kind of off-axis three reflecting optical system in the longitudinal direction of vehicle-mounted head-up display device |
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| Publication Number | Publication Date |
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| CN208654446U true CN208654446U (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110341834A (en) * | 2019-08-13 | 2019-10-18 | 杭州炽云科技有限公司 | A method of windshield of the optimization for head-up-display system imaging |
-
2018
- 2018-08-06 CN CN201821259347.8U patent/CN208654446U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110341834A (en) * | 2019-08-13 | 2019-10-18 | 杭州炽云科技有限公司 | A method of windshield of the optimization for head-up-display system imaging |
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