CN1207508C - Reflection surface determination method for vehicle lamp and vehicle lamp thereof - Google Patents

Abstract

The invention provides a method of determining a reflective face of a reflecting mirror of a luminaire for a vehicle and a luminaire for a vehicle with an appropriate appearance which can efficiently determine a reflective face satisfying required light-distribution conditions with effective use of light from a light source as reflected light. A plurality of reflective areas are generated by segmenting the inside of a reflective face outline 100, and an aimed reflective angle as a reflective condition is set for each reflective area. While making the direction of the reflective angle a basic reflective direction, each surface shape for partial reflective faces 210 to 242 is formed so that each adjacent partial reflective faces are suitably connected, and at the same time, gradually changing faces 311, 312 are formed between the partial reflective faces. With this, a suitable total appearance is maintained while a plane shape for a reflective face 10a satisfying required light distribution conditions is obtained.

Description

The reflecting surface determining method and the lamps apparatus for vehicle of lamps apparatus for vehicle catoptron

Technical field

The present invention relates to be used for the reflecting surface determining method and the lamps apparatus for vehicle of catoptron of the lamps apparatus for vehicle of vehicles such as motor vehicle.

Background technology

In lamps apparatus for vehicle, except that (1) relevant condition of lamp functions, from it is that situation about using under the state that is installed on the vehicle such as motor vehicle is considered, also has the condition (shape restrictive condition) of (2) relevant shape and condition (outward appearance restrictive condition) of (3) relevant outward appearance.Therefore, expectation obtains realizing the optimized light fixture of the condition of relevant function on the basis of the restrictive condition that satisfies the shape provide and outward appearance.

The conditional request of relevant function: the uniformity of light of the whole uniformly light-emitting of light fixture and suitably diffusion of light, see that in all directions all luminous diffusion of light etc. adapts to the luminous intensity distribution figure of light fixture kinds.

The restrictive condition of relevant vehicle, car body aspect has based on the volume of car body lamp installation portion and the condition of shape and light fixture outside (lens outside) and other car body part continuous shape etc. as the shape restrictive condition.As the outward appearance restrictive condition have based on the condition of the coordination of the outward appearance of other car bodies part and the requirement of car body appearance design aspect etc.

In recent years, along with the raising of vehicle appearance design performance,, also need to be fit to the lamps apparatus for vehicle of various car body restrictive conditions according to the form of vehicle and the kind of light fixtures such as illuminating lamp and sign lamp etc.Condition as the outward appearance of sign lamps such as one of the restrictive condition of this car body aspect relevant front-turn signal lamp etc.

Specifically, lamps apparatus for vehicle comprises: the light source (light source bulb) that is disposed at the regulation light source position; The catoptron that will reflect to optical axis direction from the light of light source bulb; See through from the reflected light of catoptron and the lens that it is penetrated to the light fixture outside.Lamps apparatus for vehicle with this structure, the luminous intensity distribution figure of the light that penetrates by light fixture mainly by reflection from the face shape of the reflecting surface of the reflection of light mirror of light source bulb and see through the shape control of the lens of light.

At the structure of this lamps apparatus for vehicle,, consider to require following condition from the appearance design of car body sometimes as the above-mentioned relevant condition that identifies the outward appearance of lamp, promptly, lamp lens is used the lens with transparent feel, and the face of the reflecting surface of seeing from the outside by transparent lens is shaped as shiny surface.Cooperate the requirement of this appearance design aspect, the structure of car body integral body and appearance design aspect will limit area and the shape of sign lamp on car body sometimes.In this case, the area of the reflecting surface integral body of catoptron is limited, and the solid angle of the reflecting surface of being seen by light source diminishes.

On the other hand, sign light such as front-turn signal lamp has being in the function that the outer third party of car shows the existence of vehicle and driver's will.Therefore, as the functional conditions that identifies lamp, require light is amplified the luminous intensity distribution figure that penetrates to the scope of regulation, so that the third party that relative vehicle is in all places can recognize.

At the requirement of this function aspects to the sign lamp, if the restriction of above-mentioned car body aspect is very tight, the design of sign lamp of satisfying the condition of necessary luminous intensity distribution figure just is difficult to.That is to say, in this sign lamp, in order to realize, to effectively utilize with the solid angle that limits from the light of light source to reflecting surface incident as reflected light to the desired condition of luminous intensity distribution figure (luminous intensity distribution condition), keep appropriate outward appearance, and control the luminous intensity distribution figure that obtains.

Summary of the invention

The present invention develops in order to address the above problem, its purpose is, a kind of reflecting surface determining method and lamps apparatus for vehicle of catoptron of lamps apparatus for vehicle are provided, can keep appropriate outward appearance, and effectively utilizing light from light source as reflected light, the reflecting surface of desired luminous intensity distribution condition is satisfied in decision effectively.

In order to realize this purpose, reflecting surface determining method of the present invention is a kind of reflecting surface determining method that is used for the catoptron of lamps apparatus for vehicle, it comprises: (1) pacing items is set step, it sets pacing items, described pacing items comprises the light source position that disposes light source, as the reflecting surface reflection that utilizes catoptron from the optical axis of the direction of light of light source and the reflecting surface profile of seeing from the optical axis direction of reflecting surface; (2) reflecting surface segmentation procedure according to pacing items and predefined luminous intensity distribution condition, is cut apart in the reflecting surface profile, generates a plurality of reflector spaces; (3) conditioned reflex is set step, conditioned reflex is set in each zone to a plurality of reflector spaces of being divided into, described conditioned reflex comprises reflection angle, and this reflection angle is specified according to the luminous intensity distribution condition and utilized as the partially reflecting surface reflection of the reflecting surface in this reflector space direction of light from light source; (4) reflecting surface making step, to each zone in a plurality of reflector spaces, direction with the reflection angle of this reflector space is the fundamental reflection direction, and to the satisfied condition of contact of stipulating of adjacent partially reflecting surface, make the face shape of partially reflecting surface, thereby make the face shape of the overall reflective face that comprises a plurality of partially reflecting surfaces.

Lamps apparatus for vehicle of the present invention comprises: light source; Having will be from the light of the light source catoptron to the reflecting surface of the optical axis direction reflection of regulation; Make lens by the light transmission of reflecting surface reflection, the reflecting surface of catoptron is split into a plurality of reflector spaces in the reflecting surface profile, simultaneously, to each zone in a plurality of reflector spaces, as the reflecting surface in this reflector space is the face shape of partially reflecting surface, formation is the fundamental reflection direction with the direction of the reflection angle set by each reflector space, and to the face shape of the adjacent smooth connection of partially reflecting surface.

In the reflecting surface determining method and lamps apparatus for vehicle of the catoptron of above-mentioned lamps apparatus for vehicle, at first, pacing items as the decision reflecting surface, set the reflecting surface profile that the configuration aspects of car body and the requirement of appearance design aspect etc. are limited, specifically, be area and the shape of setting the reflecting surface of seeing from optical axis direction, this reflecting surface profile inside is cut apart, generate a plurality of reflector spaces.Then, further each reflector space being set conditioned reflex, is the fundamental reflection condition with this conditioned reflex, makes partially reflecting surface, and the face shape of integral body of the reflecting surface of desired luminous intensity distribution condition is satisfied in decision.

According to the structure of this reflecting surface determining method and lamps apparatus for vehicle, can be by the control of the reflector space that is divided into and each partially reflecting surface from the conditioned reflex of the reflection of light face of light source and the luminous intensity distribution figure that obtains by reflected light.The mutual correlationship of the conditioned reflex of each partially reflecting surface and luminous intensity distribution figure can be controlled by making the conditioned reflexes such as reflection angle that each reflector space is set have correlationship in advance.Can more effectively be used to light from light source thus as reflected light, realization can be met the reflecting surface determining method and the lamps apparatus for vehicle of the reflecting surface of desired luminous intensity distribution condition efficiently.

In addition, the face shape of each partially reflecting surface is not the reflection direction of the direction of the reflection angle that will set as partially reflecting surface integral body, but with the direction of reflection angle as the fundamental reflection direction, simultaneously, condition of contact with regulation is connected (for example not producing step flash of light preceding an earthquake slip), the face shape of making each partially reflecting surface like this with adjacent other faces.Thus, make the appropriate outward appearance of the whole maintenance of reflecting surface.

The reflecting surface of the face shape of the above-mentioned adjacent mutual smooth connection of partially reflecting surface, the border of partially reflecting surface and near, can change from the reflection of light direction of light source.Therefore, if utilize the variation of this reflection direction, can not realize the diffusion of light effect on the reflecting surface or on the lens diffusion platform level being set.

In addition, (4) reflecting surface making step in the reflecting surface determining method comprises: (4a) partially reflecting surface making step, to each zone in a plurality of reflector spaces, be the fundamental reflection direction with the direction of the reflection angle of this reflector space, make the face shape of partially reflecting surface; (4b) the change face making step that disappears, the face shape of making the change face that disappears, this change face that disappears is arranged between a plurality of partially reflecting surfaces, satisfies the adjacent partially reflecting surface of condition of contact ground connection, simultaneously, the reflection of light direction from light source is changed in face.

Equally, the reflecting surface of the catoptron of lamps apparatus for vehicle comprises: a plurality of partially reflecting surfaces, and the direction that forms respectively with the reflection angle set by each reflector space is the face shape that the fundamental reflection direction is made; The change face of disappearing is arranged between a plurality of partially reflecting surfaces, forms to satisfy the adjacent partially reflecting surface of condition of contact ground connection, simultaneously, the face shape that the reflection of light direction from light source is changed in face.

Like this, according to the structure that constitutes by the partially reflecting surface and the change face of disappearing, by controlling the face shape and the conditioned reflex of each partially reflecting surface and the change face of disappearing, can be easily and realize having the reflecting surface of said structure rightly.Therefore, the catoptron of the luminous intensity distribution condition that meets the demands of the integrally formed luminous intensity distribution figure of reflecting surface that can obtain reliably constituting and have the lamps apparatus for vehicle of this catoptron by a plurality of partially reflecting surfaces and at least one change face that disappears.

In the reflecting surface determining method, face shape about the reflecting surface made by (5) reflecting surface making step, the reflecting surface evaluation procedure that also comprises the luminous intensity distribution figure that obtains from the light of light source with reflecting surface reflection according to the luminous intensity distribution condition evaluating, in (6) reflecting surface evaluation procedure, estimate the luminous intensity distribution figure and do not satisfy under the situation of luminous intensity distribution condition, carry out reflecting surface segmentation procedure, conditioned reflex setting step and reflecting surface making step repeatedly.

In reflecting surface determining method of the present invention, as mentioned above, by the control of each partially reflecting surface from the light of light source conditioned reflex, luminous intensity distribution figure and their correlationship at reflecting surface.To this, if after the face of making shape, estimate the luminous intensity distribution figure, then under the situation that does not satisfy the luminous intensity distribution condition, feed back the evaluation result of this luminous intensity distribution figure, partial alteration's condition is carried out the cutting apart of reflecting surface, the setting of conditioned reflex and the making of reflecting surface once more, thus the face shape of the reflecting surface of the luminous intensity distribution condition that can finally attain full and complete satisfaction.

Description of drawings

Fig. 1 is the horizontal sectional drawing that shows the structure of lamps apparatus for vehicle one embodiment;

Fig. 2 is the vertical cross section of the structure of lamps apparatus for vehicle shown in Figure 1;

Fig. 3 is the planimetric map of an example of the structure of reflecting surface in the catoptron of lamps apparatus for vehicle of Figure 1 and Figure 2;

Fig. 4 is the synoptic diagram of the luminous intensity distribution figure that forms of the reflecting surface of catoptron shown in Figure 3;

Fig. 5 is the process flow diagram of an embodiment of the reflecting surface determining method of the summary catoptron that shows lamps apparatus for vehicle;

Fig. 6 is the planimetric map of the reflecting surface structure of making when the face shape of reflecting surface shown in Figure 3 is made;

Fig. 7 is the planimetric map of the reflecting surface structure of making when the face shape of reflecting surface shown in Figure 3 is made;

Fig. 8 is another routine planimetric map of reflecting surface structure of catoptron of the lamps apparatus for vehicle of Figure 1 and Figure 2.

Embodiment

With reference to the accompanying drawings, describe the reflecting surface determining method of catoptron of lamps apparatus for vehicle of the present invention and the appropriate embodiment of lamps apparatus for vehicle in detail.In addition, in description of drawings, same important document uses prosign, and omits repeat specification.The dimension scale of accompanying drawing may not be consistent with the ratio in the explanation.

The one-piece construction of lamps apparatus for vehicle of the present invention at first, is described.In addition, being based on the sign lamp that is located at car body the place ahead as the embodiment of the example of lamps apparatus for vehicle explanation below is the embodiment of front-turn signal lamp.

Fig. 1 is the horizontal sectional drawing of structure of an embodiment of lamps apparatus for vehicle of the present invention.Fig. 2 is the vertical cross section of the structure of lamps apparatus for vehicle shown in Figure 1.These sectional views all are presented at the cross-section structure of the light fixture on the plane that comprises light source point F described later and the optical axis Ax by light source point F.

In following, be X-axis with the left and right directions of light fixture, above-below direction is a Y-axis, is that fore-and-aft direction is the Z axle with optical axis Ax direction, thereby, show X, Z coordinate axis among Fig. 1, show Y, Z coordinate axis among Fig. 2.In addition, designated vehicle is preestablished by the position relation of the car body of light fixture and installation light fixture and the luminous intensity distribution condition that light fixture requires etc. with the optical axis Ax of the direction of the light ejaculation of light fixture.

The lamps apparatus for vehicle of present embodiment comprises catoptron 1, lens 2 and light-blocking member 4.

Catoptron 1 has catoptron portion 10 and is arranged on catoptron portion 10 outer edges, is used for and lens position and fixing etc. outer frame 12, forms the mode to the direction expansion that is approximately perpendicular to optical axis Ax.The front side of catoptron portion 10 and lens 2 relative faces form will be from the light of the light source reflecting surface 10a to the direction reflection of optical axis Ax.

Be formed with light source patchhole 11 on the assigned position of catoptron portion 10, light source bulb B inserts this light source patchhole 11 from the rear of catoptron 1.Light source bulb B fixedly installs with respect to catoptron 1, makes its light source point F be positioned at assigned position (light source position) on the optical axis Ax.

With respect to light source bulb B and catoptron 1, on ejaculation direction, be provided with lens 2 by the light of optical axis Ax appointment.

Lens 2 are the lamp lens that constitute the outside of this light fixture and form the part of car body outside on being installed on car body the time.In the structure example of Figure 1 and Figure 2, the lens that do not have the light diffusion function that lens platform level causes have been adopted as lens 2 with transparent feel.Therefore, in this structure example, lens 2 influence the ejaculation condition from the light of light fixture hardly.These lens 2 determine its outside shape according to the appearance design of car body, link to each other with the exterior portion of light fixture car body in addition.

Between the reflecting surface 10a of catoptron 1 and lens 2, be provided with light-blocking member 4.This light-blocking member 4 for example adopts the parts of parts of making of the material that does not make light transmission or the evaporation processing of having carried out aluminium etc., not make the light transmission from light source bulb B, plays interception.Therefore, the structure of this light fixture makes and penetrates to the light fixture outside from the reflected light that is only reflected by reflecting surface 10a in the light of light source bulb B.

In above structure, when lighting light source bulb B, the light of being supplied with by the light source point F of light source bulb B and near light-emitting zone thereof incides the reflecting surface 10a of catoptron 1, with the direction reflection to optical axis Ax of the conditioned reflex of regulation.Then, the reflected light scioptics 2 from reflecting surface 10a penetrate to the light fixture outside.

The following describes the structure of reflecting surface of the catoptron of lamps apparatus for vehicle.

Fig. 3 is the planimetric map of one of structure example of reflecting surface of catoptron of the lamps apparatus for vehicle of Figure 1 and Figure 2.This planimetric map shows the structure of the reflecting surface 10a (catoptron portion 10) of the catoptron of seeing from the direction (the place ahead) of optical axis Ax 1.In addition, with respect to this Fig. 3, above-mentioned Fig. 1 is the horizontal sectional drawing along the A-A line of the X-direction of the planimetric map of Fig. 3.Fig. 2 is the vertical cross section along the B-B line of Y direction.

The face relative with lens 2 of catoptron portion 10 is that reflecting surface 10a is illustrated by the broken lines cut-off rule respectively in Fig. 3, will be divided into a plurality of zones in its reflecting surface profile 100.With respect to a plurality of reflector spaces each, the reflecting surface that forms in this reflector space is a partially reflecting surface.

In addition, at the central part of reflecting surface 10a, be the center with optical axis Ax, be provided with the peristome of the circular of the light source patchhole 11 that is formed for being provided with light source bulb B.In addition, the dotted line that is illustrated in the circle in these light source patchhole 11 outsides is represented the configuration of the light-blocking member 4 seen from the direction of optical axis Ax.

The concrete structure that comprises the reflecting surface 10a of a plurality of partially reflecting surfaces, in reflecting surface 10a shown in Figure 3, be to utilize the cut-off rule shown in the dotted line to be divided into 10 reflector spaces in the reflecting surface profile 100, corresponding therewith, be provided with 10 partially reflecting surfaces 210,211,213,214,221,222,231,232,241 and 242.Below with reference to Fig. 4 its structure is described.

Fig. 4 is the figure that schematically shows the reflection direction that each partially reflecting surface is aimed in luminous intensity distribution figure, especially the luminous intensity distribution figure that the reflecting surface 10a of catoptron shown in Figure 31 obtains.In this luminous intensity distribution figure, same with Fig. 3 of the planar structure that shows reflecting surface 10a, utilize its angular distribution to schematically show the luminous intensity distribution figure of direction (the place ahead) when seeing from optical axis Ax.Among the figure, transverse axis is the ejaculation angle of the light of X-direction (H=horizontal direction), and the longitudinal axis is the ejaculation angle of the light of Y direction (V=vertical direction).

The partially reflecting surface 210 of the circular of ambient light source patchhole 11 is by optical axis Ax, with the center of luminous intensity distribution figure is that the position of V=0 °, H=0 ° is the center, is that the reflection direction of aligning forms with the luminous intensity distribution zone 510 of the scope of (V=D10 °～U10 °, H=L10 °～R10 °) roughly.

The partially reflecting surface 211 that is positioned at the top of partially reflecting surface 210 forms whole luminous intensity distributions zone 511 of V=0 ° of top as the reflection direction of aiming at.The partially reflecting surface 213 and 214 that is positioned at partially reflecting surface 210 belows forms as the reflection direction of aiming at whole luminous intensity distributions zone 512 of V=0 ° of below respectively.

The partially reflecting surface 221 of left that is positioned at partially reflecting surface 210 with H=0 ° of left, comprise that the luminous intensity distribution zone 521 of the position of (V=U5 °, H=L20 °) forms as the reflection direction of aiming at.Partially reflecting surface 222 equally with H=0 ° of left, comprise that the luminous intensity distribution zone 522 of the position of (V=D5 °, H=L20 °) forms as the reflection direction of aiming at.

The luminous intensity distribution zone 531 of the position that right-hand partially reflecting surface 231 that is positioned at partially reflecting surface 210 is right-hand with H=0 °, comprise (V=U5 °, H=R20 °) forms as the reflection direction of aiming at.The luminous intensity distribution zone 532 of the position that partially reflecting surface 232 is right-hand with H=0 ° equally, comprise (V=D5 °, H=R20 °) forms as the reflection direction of aiming at.

Be positioned at the partially reflecting surface 241 of the below of partially reflecting surface 210 will be roughly on V=0 ° line, approximately the luminous intensity distribution zone 541 of the scope of (V=0 °, H=L10 °～R10 °) forms as the reflection direction of aiming at.The luminous intensity distribution zone 542 of the position that partially reflecting surface 242 equally will be on V=0 ° line, comprise (V=0 °, H=R5 °) forms as the reflection direction of aiming at.

Between a plurality of partially reflecting surfaces, be provided with the change face that disappears (the oblique line part of Fig. 3) that is used for the adjacent partially reflecting surface of smooth connection as required.In reflecting surface 10a shown in Figure 3,, between each partially reflecting surface below the partially reflecting surface 210, be provided with the change face of disappearing 311 and 312 as this change face that disappears.

With regard to the reflecting surface of the catoptron of the lamps apparatus for vehicle of structure shown in Figure 3, the reflecting surface determining method (method for designing) that uses in its design is described below.

Fig. 5 is the process flow diagram of an embodiment of the reflecting surface determining method of the summary catoptron that shows lamps apparatus for vehicle of the present invention.This reflecting surface determining method comprises that pacing items is set step S101, reflecting surface segmentation procedure S102, conditioned reflex is set each step such as step S103, reflecting surface making step S104 and reflecting surface evaluation procedure S105.Below with reference to the structure of reflecting surface 10a shown in Figure 3 and purpose luminous intensity distribution figure shown in Figure 4, above steps is described.

Pacing items is set step (step S101)

In the reflecting surface determining method of the catoptron that is applied to lamps apparatus for vehicle, at first be the pacing items of setting the face shape of making reflecting surface.

For example set the position (light source position) of position that light source bulb B is set and light source point F thereof and optical axis Ax etc. as pacing items, this optical axis Ax is the axle by light source position, is the direction of utilizing the reflecting surface 10a of catoptron 1 it to be penetrated from light fixture from the reflection of the light of light source.

Reflecting surface profile 100 as the profile of seeing from optical axis Ax direction of reflecting surface 10a is also set as pacing items.Example as shown in Figure 3, the concrete area of reflecting surface profile 100 and shape wait according to the outward appearance restrictive condition of the requirement formation aspect the appearance design of the shape restrictive condition of formation such as position relation of the volume of the light fixture folding and unfolding portion on car body and shape, itself and other car body part or other light fixtures and car body and set.

Other conditions also can be used as pacing items as required and set.Such condition for example has the shape of the light-emitting zone of the light source bulb B that uses as light source.The filament shape of the line segment shape under the situation that bulb that horizontal expansion or the vertical filament that expands are formed light-emitting zone uses as light source bulb B etc. is for example arranged as the example of the shape of the light-emitting zone of setting.

Different with above-mentioned each condition of setting as pacing items, the condition that the luminous intensity distribution figure that form to the light that comes from the lamps apparatus for vehicle ejaculation in advance should satisfy is a luminous intensity distribution condition etc.

Reflecting surface segmentation procedure (step S102)

Then,, will cut apart in the reflecting surface profile 100, generate a plurality of reflector spaces with reference to pacing items and the predefined luminous intensity distribution condition set.

In example shown in Figure 3, as mentioned above, utilize the cut-off rule be illustrated by the broken lines respectively, cutting apart in reflecting surface profile 100 on the XY plane of seeing from optical axis Ax, generate 10 reflector spaces.In addition, 2 corresponding with the change face of disappearing 311 and 312 change zones that disappear also generate simultaneously.

Here, the condition of specifically cutting apart that comprises the area of cutting apart number and each reflector space of the reflector space in the relevant reflecting surface profile 100 and shape etc., the solid angle of envisioning when considering that preferably each reflector space made partially reflecting surface of seeing from light source etc., reflecting surface 10a influence each condition of luminous intensity distribution figure and set.

Conditioned reflex is set step (step S103)

Then, with reference to the luminous intensity distribution condition, the condition that the setting conduct is used for the face shape of each making partially reflecting surface of a plurality of reflector spaces that are divided into is a conditioned reflex.

For example to set reflection angle etc. as conditioned reflex to each zone in a plurality of reflector spaces, this reflection angle specify by in this reflector space as the partially reflecting surface reflection of reflecting surface 10a direction of light from light source.

To this from the reflection of light angle of light source according to each reflector space, by the decisions such as angle of the angle and the Y direction (vertical direction) of the X-direction of seeing from optical axis Ax (horizontal direction).These reflection angles are corresponding with the transverse axis and the ejaculation angle of the longitudinal axis in the luminous intensity distribution figure shown in Figure 4 respectively.

Equally, also can set the f value (focal length) of established part (for example middle body) as conditioned reflex or for each regional f values of a plurality of reflector spaces for reflecting surface 10a.The setting of the f value of reflecting surface 10a is to set according to the optical texture of light fixture basically, still, considers simultaneously preferably that heat that light source bulb B produces waits the influence of catoptron 1 or lens 2 to set.

Reflecting surface making step (step S104)

Then, according to a plurality of reflector spaces that are divided into and the conditioned reflex of setting, make the face shape of the reflecting surface of the luminous intensity distribution condition that satisfies regulation.In the present embodiment, reflecting surface making step S104 comprises following partially reflecting surface making step S104a and the change face of disappearing making step S104b.

Partially reflecting surface making step (step S104a)

At first, with reference to the reflection angle of setting by each reflector space, make the face shape of the partially reflecting surface relative with each zone in a plurality of reflector spaces.

In structure example shown in Figure 3, for 10 reflector spaces, make the face shape of 10 partially reflecting surfaces 210,211,213,214,221,222,231,232,241 and 242 respectively, so that the fundamental reflection direction of the light of each partially reflecting surface is the direction of the reflection angle of setting.

Specifically, to each reflector space, with the direction of reflection angle that this reflector space is set as fundamental reflection axle (as with the optical axis of this partially reflecting surface reflection), the face shape of making partially reflecting surface from the direction of light of light source.With other partially reflecting surfaces directly under the situation such as adjacency, make the face shape of partially reflecting surface, making its direction with reflection angle is the fundamental reflection direction, and the partially reflecting surface of adjacency is satisfied the condition of contact (for example not producing the condition of step flash of light preceding an earthquake slip between partially reflecting surface) of regulation.

The change face of disappearing making step (step S104b)

Then, make the face shape of the change face that disappears between a plurality of partially reflecting surfaces of being located at.

In structure example shown in Figure 3,2 disappeared becomes the face shapes that the zone makes 2 disappear change face 311 and 312 respectively, makes the partially reflecting surface of adjacency satisfy condition of contact and connects.At this moment, when making disappears the face shape of change face, be preferably on the basis of the condition of contact of considering partially reflecting surface, consider that simultaneously the conditioned reflexes such as reflection of light direction from light source that change make the face shape in this disappears change face.

As mentioned above, make the face shape of the partially reflecting surface relative with each zone in 10 reflector spaces and respectively with 2 disappear become the face shape of the regional relative change faces that disappear after, as 10 partially reflecting surfaces that obtain and the set of 2 change faces that disappear, make the face shape of reflecting surface 10a integral body.

Reflecting surface evaluation procedure (step S105)

Then, to the face shape of the reflecting surface that is made into, estimate the luminous intensity distribution figure that obtains.

Here, to the face shape of the reflecting surface made, calculate the luminous intensity distribution figure that obtains from the light of light source by this reflecting surface reflection.Then, judge the luminous intensity distribution condition (S106) whether the luminous intensity distribution figure calculate meets the demands.

If judge and satisfy the luminous intensity distribution condition, then the face shape decision with this reflecting surface 10a is final face shape.And be when fully not satisfying the luminous intensity distribution condition when judging, then repeat step S102～S104, make the face shape of new reflecting surface 10a, carry out the evaluation of luminous intensity distribution figure equally.

The evaluation of the reflecting surface face shape of carrying out according to the luminous intensity distribution figure specifically uses the luminous intensity distribution figure of calculating from the light of light source by ray tracing etc. to carry out.In this case, can be with the calculating luminous intensity distribution figures such as line segment shape of light source as pointolite or filament.

The following describes the reflecting surface determining method of catoptron of above-mentioned lamps apparatus for vehicle and the effect of lamps apparatus for vehicle.

In the reflecting surface determining method and lamps apparatus for vehicle of the catoptron of the lamps apparatus for vehicle of present embodiment, at first will set as the pacing items of reflecting surface decision by area and the shape of the reflecting surface profile 100 of the restrictions such as requirement of body construction and appearance design aspect, the reflecting surface 10a that specifically will see from the direction of optical axis Ax, and, generate a plurality of reflector spaces with cutting apart in this reflecting surface profile 100.Then, further each reflector space is set conditioned reflex, this conditioned reflex is made partially reflecting surface as the fundamental reflection condition, the face shape of the reflecting surface 10a integral body of the luminous intensity distribution condition that decision meets the demands.

Structure according to this reflecting surface determining method and lamps apparatus for vehicle, be arranged on each partially reflecting surface among Fig. 3 and Fig. 4 and luminous intensity distribution zone as correspondence, can reach the luminous intensity distribution figure that obtains by reflected light from the conditioned reflex of the reflection of light face 10a of light source according to each reflector space that is divided into and partially reflecting surface control.

In addition, the mutual correlationship of the conditioned reflex of each partially reflecting surface and luminous intensity distribution figure can be controlled by making the conditioned reflexes such as reflection angle that each reflector space is set have correlationship in advance.Like this, can be used as reflected light and more effectively be used to light from light source, realization can be met the reflecting surface determining method and the lamps apparatus for vehicle of reflecting surface of the luminous intensity distribution condition of requirement efficiently.

Particularly, in recent years along with the raising of the appearance design performance of vehicle, the area of light fixture such as strict restriction sign lamp and the situation of shape have been produced by the structure of car body integral body and appearance design aspect.To this,,, also can make the reflecting surface 10a of the luminous intensity distribution condition that meets the demands efficiently even under the exclusive situation like this according to the structure of above-mentioned reflecting surface determining method and reflecting surface 10a.

And, the face shape of each partially reflecting surface is not the reflection direction of the direction of the reflection angle that will set as partially reflecting surface integral body, but with the direction of reflection angle as the fundamental reflection direction, condition of contact with regulation is connected with other faces of adjacency simultaneously, makes the face shape of each partially reflecting surface.Thereby as the whole good surface appearance that keeps of reflecting surface.

In the reflecting surface of the face shape of the mutual smooth connection of partially reflecting surface of this adjacency, the border of partially reflecting surface and near, can change from the reflection of light direction of light source.Therefore, if utilize the variation of this reflection direction, in that not being set on the reflecting surface or on the lens face, diffusion platform level just can not realize the diffusion of light effect.

The example of the condition of contact that should satisfy as the partially reflecting surface of adjacency has between partially reflecting surface and does not produce step and the condition of smooth connection.That is to say, with in the partially reflecting surface at least the face portion of boundary vicinity form the face shape be connected with the partially reflecting surface tangent line of adjacency.In this case, do not produce crest line, can obtain smooth face shape as a whole at the boundary member of partially reflecting surface.

In this reflecting surface, as described in above-mentioned structure example, even do not have the light diffusion function as lens 2 and adopting under the situation of lens, also can guarantee to utilize the outward appearance of the smooth face shape of the reflecting surface integral body that diffusion of light that the variation of the reflection direction between the partially reflecting surface carries out and scioptics can see from the outside simultaneously with transparent feel.

Like this at the boundary vicinity of partially reflecting surface from the face shape that the reflection of light direction of light source changes, the influence of the form variations that produces between different product in the time of also can eliminating actual manufacturing light fixture to a certain extent.

In the above-described embodiments, in the structure of the reflecting surface 10a of catoptron 1, outside a plurality of partially reflecting surfaces, the change face that disappears that also is provided with the partially reflecting surface that connects adjacency and the reflection of light direction from light source is changed in face.

Like this, according to the structure that constitutes by the partially reflecting surface and the change face of disappearing, by controlling the face shape and the conditioned reflex of each partially reflecting surface and the change face of disappearing, can be easily and realize having the reflecting surface of above-mentioned smooth face shape etc. rightly.Therefore, can obtain the catoptron of the luminous intensity distribution condition that the luminous intensity distribution figure meets the demands reliably and have the lamps apparatus for vehicle of this catoptron, this luminous intensity distribution figure is the integrally formed luminous intensity distribution figure of reflecting surface that is made of a plurality of partially reflecting surfaces and at least one change face that disappears.

Whether the change face of disappearing is set between partially reflecting surface is considered preferably that the difference of the reflection angle that the partially reflecting surface of adjacency is aimed at waits and sets.The scope of the change face that disappears of the boundary of partially reflecting surface is the difference of reflection angle that consider to aim at etc. and setting equally, for example is about 2～8mm.In addition, each reflector space is set conditioned reflex and consider too that preferably the difference of the reflection angle that the partially reflecting surface of adjacency is aimed at sets.

In reflecting surface determining method shown in Figure 5,, be the luminous intensity distribution figure that utilizes the luminous intensity distribution condition evaluating to obtain about the reflecting surface face shape that is made into.

In this reflecting surface determining method, as mentioned above, according to conditioned reflex, luminous intensity distribution figure and the correlationship thereof of each reflector space that is divided into and partially reflecting surface control from the reflection of light face 10a of light source.To this, if after the face of making shape, estimate the luminous intensity distribution figure, then under the situation that does not satisfy the luminous intensity distribution condition, can feed back the evaluation result of this luminous intensity distribution figure, partial alteration's condition is carried out the cutting apart of reflecting surface, the setting of conditioned reflex and the making of reflecting surface, the face shape of the reflecting surface of the luminous intensity distribution condition that finally can attain full and complete satisfaction once more.

In addition, as being fit to the method for making of car body aspect the method for utilizing free form surface making reflecting surface integral body is arranged to the reflecting surface of the restrictive condition of shape or outward appearance.Free form surface is different with sphere or parabola etc., the shape of face arbitrarily that can make smooth connection according to the restrictive condition of car body.

But, under the situation of free form surface, though the degree of freedom that the face shape is made is big, from the control difficulty of the reflection of light direction of light source and the luminous intensity distribution figure that obtains.Particularly, require owing to the small sizeization of light fixture etc. to effectively utilize light from light source as catoptrical situation under, be difficult to utilize free form surface to make the reflecting surface of the luminous intensity distribution condition that meets the demands.In addition, in the face shape postevaluation of making reflecting surface during the luminous intensity distribution figure, even want to feed back the face shape corrections luminous intensity distribution of its evaluation result with free form surface, appropriate modification method that can not clear and definite face shape.

Relative therewith, according to comprising that a plurality of partially reflecting surfaces constitute the said structure of reflecting surface integral body, can be to each partially reflecting surface control from the reflection of light direction of light source and the luminous intensity distribution figure that obtains, simultaneously, can realize and roughly same smooth face shape and the outward appearance of free form surface as reflecting surface integral body.

Here, the face shape deciding step of the reflecting surface that the evaluation result of feedback luminous intensity distribution figure is carried out is that example is carried out simple declaration with the concrete making step of reflecting surface 10a shown in Figure 3.

In the making of reflecting surface 10a shown in Figure 3, at first, as shown in Figure 6, segmented reflector facial contour inside 100 has made 7 partially reflecting surfaces.Specifically, made the partially reflecting surface 232 in the partially reflecting surface 212 in the partially reflecting surface 210 in centering adjustment luminous intensity distribution zone 510, the partially reflecting surface 211 of aiming at luminous intensity distribution zone, top 511, luminous intensity distribution zone, aligning below 512, the partially reflecting surface 221 of aiming at luminous intensity distribution zone, upper left side 521, the partially reflecting surface 222 of aiming at luminous intensity distribution zone, lower left 522, the partially reflecting surface 231 of aiming at luminous intensity distribution zone, upper right side 531, aligning luminous intensity distribution zone, lower right 532.In the production phase of this reflecting surface, do not make the change face that disappears.

The luminous intensity distribution figure that evaluation is obtained by the reflecting surface of this structure shown in Figure 6, its result show light intensity that below is left penetrated and on V=0 ° line and near the light intensity that penetrates it fail fully to obtain.

To this, feed back above-mentioned evaluation result to reflecting surface shown in Figure 6, as shown in Figure 7, made the new reflecting surface that structure shown in Figure 6 has been carried out partial alteration.Specifically, the partially reflecting surface 212 that area on the reflecting surface is bigger is further cut apart, having stayed its part as the partially reflecting surface in the luminous intensity distribution zone 512 of aiming at the below is partially reflecting surface 213 and 214, and other parts have changed conditioned reflex respectively and based on the face shape of this conditioned reflex.

At first, the part with partially reflecting surface 212 lower lefts has been added on the partially reflecting surface 222 in aligning luminous intensity distribution zone, lower left 522.In addition, made on the line of aiming at V=0 ° again and near the partially reflecting surface 241 in luminous intensity distribution zone 541.Along with cutting apart again of this partially reflecting surface 212, the part of partially reflecting surface 212 as the change face of disappearing 311 and 312, is attempted to improve whole face shape.

The luminous intensity distribution figure that the reflecting surface of this structure shown in Figure 7 obtains is estimated, its result shows, though left the light intensity that penetrates of below and on V=0 ° line and near the light intensity that penetrates it be improved, but, the position of (V=0 °, H=R5 °) and near light intensity not enough slightly.

To this, a part that offsets change face 311 further changes the face shape, has made and aim at and comprise the partially reflecting surface 242 in luminous intensity distribution zone 542 of the position of (V=0 °, H=R5 °) again, has made final reflecting surface 10a shown in Figure 3.

As mentioned above, by the face shape to the reflecting surface made, the evaluation result of feedback luminous intensity distribution figure is repeatedly carried out the making (partial alteration) of reflecting surface face shape, the face shape that can make the reflecting surface of the luminous intensity distribution condition that meets the demands efficiently.

The reflecting surface determining method and the lamps apparatus for vehicle of lamps apparatus for vehicle catoptron of the present invention are not limited to the foregoing description, can carry out various distortion.For example, the dividing method of a plurality of reflector spaces of the interior formation of segmented reflector facial contour can adopt various dividing methods according to structure and the difficulty of reflecting surface making or the material of catoptron etc. of each lamps apparatus for vehicle.

Fig. 8 is another routine planimetric map of reflecting surface structure of the lamps apparatus for vehicle catoptron of Figure 1 and Figure 2.In this structure example, be to utilize the cut-off rule that is parallel to X-direction or Y direction to become the structure in zone with being divided into a plurality of reflector spaces in the reflecting surface profile 100 and disappearing.The middle body that comprises light source patchhole 11 in reflecting surface profile 100 is provided with a partially reflecting surface 200, and part is provided with 6 partially reflecting surfaces 200 and 1 change face 300 that disappears up, below part be provided with 9 partially reflecting surfaces 200 and 8 change faces 300 that disappear.

Utilize the reflecting surface 10a of this structure also can be same, form the reflecting surface face shape of the luminous intensity distribution condition that meets the demands with structure shown in Figure 3.

The reflecting surface determining method and the lamps apparatus for vehicle of lamps apparatus for vehicle catoptron of the present invention describe in detail as above, can obtain following effect.That is to say, cut apart the reflecting surface profile inside of setting as pacing items, generate a plurality of reflector spaces, simultaneously, each reflector space is set conditioned reflex, with this conditioned reflex is the fundamental reflection condition, make partially reflecting surface, be connected with the partially reflecting surface of adjacency rightly, the face shape of the reflecting surface integral body of the luminous intensity distribution condition that decision meets the demands according to this reflecting surface determining method and lamps apparatus for vehicle, can keep appropriate outward appearance, and more effectively being used to light from light source as reflected light, realization can be met the reflecting surface determining method and the lamps apparatus for vehicle of reflecting surface of the luminous intensity distribution condition of requirement efficiently.

Claims (5)

1, a kind of reflecting surface determining method of catoptron of lamps apparatus for vehicle, it is characterized in that, it comprises: pacing items is set step, set pacing items, described pacing items comprises the light source position that dispose light source, form the reflecting surface that utilizes catoptron reflects from the optical axis of the direction of light of described light source and the reflecting surface profile of seeing from the described optical axis direction of described reflecting surface;

The reflecting surface segmentation procedure according to described pacing items and predefined luminous intensity distribution condition, is cut apart in described reflecting surface profile, generates a plurality of reflector spaces;

Conditioned reflex is set step, conditioned reflex is set in each zone to described a plurality of reflector spaces of being divided into, described conditioned reflex comprises reflection angle, and this reflection angle is specified according to described luminous intensity distribution condition and utilized as the partially reflecting surface reflection of the described reflecting surface in this reflector space direction of light from described light source;

The reflecting surface making step, to each zone in described a plurality of reflector spaces, direction with the described reflection angle of this reflector space is the fundamental reflection direction, and to the satisfied condition of contact of stipulating of adjacent described partially reflecting surface, make the face shape of described partially reflecting surface, thereby make the face shape of the described reflecting surface of the integral body that comprises a plurality of described partially reflecting surfaces

The change face of disappearing making step, the face shape of making the change face that disappears, this change face that disappears is arranged between a plurality of described partially reflecting surfaces, satisfies described condition of contact ground and connects adjacent described partially reflecting surface, simultaneously, the reflection of light direction from described light source is changed in face.

2, reflecting surface determining method as claimed in claim 1, it is characterized in that, described reflecting surface making step comprises: the partially reflecting surface making step, to each zone in described a plurality of reflector spaces, direction with the described reflection angle of this reflector space is described fundamental reflection direction, makes the face shape of described partially reflecting surface.

3, reflecting surface determining method as claimed in claim 1 or 2, it is characterized in that, also comprise face shape to the described reflecting surface of making by described reflecting surface making step, the reflecting surface evaluation procedure of the luminous intensity distribution figure that obtains from the light of described light source with the reflection of described reflecting surface according to described luminous intensity distribution condition evaluating, in described reflecting surface evaluation procedure, estimate described luminous intensity distribution figure and do not satisfy under the situation of described luminous intensity distribution condition, carry out described reflecting surface segmentation procedure, described conditioned reflex setting step and described reflecting surface making step repeatedly.

4, a kind of lamps apparatus for vehicle comprises: light source; Having will be from the light of the described light source catoptron to the reflecting surface of the optical axis direction reflection of regulation; Make lens, it is characterized in that by the light transmission of described reflecting surface reflection,

The described reflecting surface of described catoptron is split into a plurality of reflector spaces in the reflecting surface profile, simultaneously, to each zone in described a plurality of reflector spaces, as the described reflecting surface in this reflector space is the face shape of partially reflecting surface, formation is the fundamental reflection direction with the direction of the reflection angle set by each reflector space, and, make the face shape of the change face that disappears that the reflection of light direction from described light source changes in face to the adjacent smooth connection of described partially reflecting surface.

5, lamps apparatus for vehicle as claimed in claim 4, it is characterized in that, the described reflecting surface of described catoptron comprises: a plurality of described partially reflecting surfaces, and the direction that forms respectively with the described reflection angle set by each described reflector space is the face shape that described fundamental reflection direction is made; The change face of disappearing is arranged between a plurality of described partially reflecting surfaces, forms the face shape satisfy the adjacent described partially reflecting surface of described condition of contact ground connection and the reflection of light direction from described light source is changed in face.

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