CN114967299A - Projection optical machine and projection equipment - Google Patents
Projection optical machine and projection equipment Download PDFInfo
- Publication number
- CN114967299A CN114967299A CN202210589464.5A CN202210589464A CN114967299A CN 114967299 A CN114967299 A CN 114967299A CN 202210589464 A CN202210589464 A CN 202210589464A CN 114967299 A CN114967299 A CN 114967299A
- Authority
- CN
- China
- Prior art keywords
- light
- reflecting
- focusing
- relay
- emitted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims description 85
- 238000003384 imaging method Methods 0.000 claims abstract description 27
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Projection Apparatus (AREA)
Abstract
The present disclosure relates to a projection light machine and a projection apparatus, the projection light machine comprises a light emitting device, a collimating device, a relay device and an imaging device in turn along a light path, a plurality of components in the collimating device are arranged in turn along a first direction to collimate light emitted by the light emitting device; the relay device is used for transmitting the light rays emitted from the collimating device to the imaging device; a plurality of components in the imaging device are arranged in sequence along a second direction and used for projecting light rays into an image; the relay device comprises a reflector, a relay and a spatial light modulator; the reflecting piece is used for reflecting the light rays emitted by the collimating device to the relay piece; the relay is used for conducting the light emitted from the reflecting part to the spatial light modulator and conducting the light emitted from the spatial light modulator to the imaging device; wherein the first direction extends in a vertical direction and the second direction extends in a horizontal plane. This projection ray apparatus can be convenient for the user and place.
Description
Technical Field
The present disclosure relates to the field of projection devices, and particularly to a projection light machine and a projection device.
Background
Projection equipment, also known as a projector, is equipment capable of projecting images or videos onto a curtain, and is popular with users because a projection picture of the projection equipment can provide a wide visual field for people.
In the related art, the projection device often occupies a large space in the horizontal direction in the use state, and is inconvenient for a user to place.
Disclosure of Invention
The disclosure discloses a projection optical machine and projection equipment, which can solve the technical problems existing in the related technology.
In a first aspect, the present disclosure relates to a projection light machine, which sequentially includes a light emitting device, a collimating device, a relay device, and an imaging device along a light path, wherein a plurality of components in the collimating device are sequentially arranged along a first direction to collimate light emitted by the light emitting device; the relay device is used for conducting the light rays emitted from the collimating device to the imaging device; a plurality of components in the imaging device are sequentially arranged along a second direction and used for projecting light rays into an image; the relay device comprises a reflector, a relay and a spatial light modulator; the reflecting piece is used for reflecting the light rays emitted by the collimating device to the relay piece; the relay is used for conducting the light emitted from the reflecting part to the spatial light modulator and conducting the light emitted from the spatial light modulator to the imaging device; wherein the first direction extends in a vertical direction and the second direction extends in a horizontal plane.
The spatial light modulator comprises a rectangular modulation surface, the length direction of the rectangular modulation surface is parallel to the second direction, and the width direction of the rectangular modulation surface is parallel to the first direction.
The relay device also comprises a focusing piece for converging light rays; the focusing piece is configured as a first focusing lens, and the first focusing lens is used for converging the light rays emitted by the reflecting piece to the relay piece; or, the first focusing lens is used for converging the light rays emitted by the collimating device to the reflecting piece.
The relay device also comprises a focusing piece for converging light rays; the focusing element is constructed as a focusing lens group which comprises at least two second focusing lenses and is used for converging the light rays emitted by the collimating device to the reflecting element; or, the reflecting piece is used for reflecting the light rays emitted by one of the second focusing lenses to the other second focusing lens.
Wherein the focusing member comprises a focusing structure; the focusing structure comprises a first optical surface, a focusing surface, a second optical surface and a reflecting film, and the reflecting film covers the focusing surface; the reflecting piece is arranged opposite to the first optical surface and used for enabling the light reflected by the reflecting piece to be transmitted into the focusing structure through the first optical surface and to be emitted to the second optical surface, the second optical surface can enable the light to be totally reflected or partially reflected to the focusing surface, and the focusing surface can converge the light, reflect the light to the second optical surface through the reflecting film and emit the light from the second optical surface to the relay piece.
The relay comprises a light incident surface, the light incident surface is opposite to the second optical surface and is arranged at intervals, the light incident surface and the second optical surface are both arranged to be planes and are parallel to each other, and the distance between the light incident surface and the second optical surface is between 0.01mm and 10 mm.
Wherein the second optical surface is capable of transmitting light rays from the first optical surface at an angle of incidence greater than the angle of total reflection from the focusing structure and/or the second optical surface is capable of reflecting light rays from the focusing surface at an angle of incidence less than the angle of total reflection from the focusing structure.
Wherein the first optical surface is configured to be planar and to lie within a plane defined by the first direction and a third direction, the second optical surface is configured to be planar and to extend along the first direction, and an included angle between the second optical surface and the first optical surface is less than 90 degrees; wherein the third direction extends in a horizontal plane and is perpendicular to the second direction.
Wherein the focal plane is configured as an outwardly convex curved surface.
Wherein, the reflector is constructed as the reflecting plane mirror, the reflecting plane mirror includes the plane of reflection that is used for carrying out the reflection to light, the plane of reflection extends along the third direction, just the plane of reflection with the second direction with the contained angle between the plane that the third direction was injectd is less than 90 degrees, wherein, the third direction extend in the horizontal plane and with second direction mutually perpendicular.
The relay piece comprises a light incident surface, a first light emitting surface and a second light emitting surface which are connected in pairs, wherein the first light emitting surface is located in a plane defined by the first direction and the second direction, the second light emitting surface is located in a plane defined by the first direction and the third direction, and the light incident surface extends along the first direction; the light incident surface is used for transmitting the light reflected by the reflecting part into the relay part and emitting the light to the first light emitting surface, the spatial light modulator is arranged opposite to the first light emitting surface and is used for receiving and modulating the light emitted from the first light emitting surface, the modulated light is emitted to the light incident surface through the first light emitting surface, and the light incident surface is used for reflecting the light to the second light emitting surface so as to enable the light to be emitted from the relay part; wherein the third direction extends in a horizontal plane and is perpendicular to the second direction.
In a second aspect, the present disclosure further relates to a projection apparatus, which includes the projection light engine.
In the above-described configuration, first, since the plurality of members in the collimating device are arranged in order in the first direction, the light travels substantially in the first direction when passing through the collimating device, and the plurality of members in the imaging device are arranged in order in the second direction, the light travels substantially in the second direction when passing through the imaging device, and by providing the reflecting member and the relay member in the relay device, the direction in which the light travels can be effectively changed, and the light emitted from the collimating device can be directed to the imaging device. Secondly, a plurality of parts among the collimation device set gradually along first direction, and a plurality of parts among the image device set gradually along the second direction, and this first direction is vertical direction, and the second direction is located the horizontal plane, then the projection ray apparatus is whole to be found the formula in vertical direction, and then projection equipment also is found the formula in vertical direction, reduces the space that projection equipment took up at the horizontal direction effectively, and the user of being convenient for places.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a projection light machine according to a first embodiment provided by the present disclosure, and a projection screen for projecting light is further illustrated in the diagram;
fig. 2 is a schematic structural diagram of a focusing element, a relay element and a spatial light modulator of a relay device of a projection light engine according to a first embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a projection light machine according to a second embodiment provided by the present disclosure, and a projection screen for projecting light rays is also illustrated in the diagram.
Description of reference numerals:
1 light emitting device 2 collimating device
3 Relay device 31 reflector
311 reflective planar 32 relay
321 light incident surface 322 first light emitting surface
323 second light exit surface 33 spatial light modulator
34 focusing element 340 second focusing lens
3441 first optical surface 3442 focal plane
3443 second optical surface 35 dodging device
4 projection screen of imaging device 100
A a first direction and B a second direction
C third direction
Detailed Description
Technical solutions in embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "first direction", "second direction", "third direction" and the like as used herein are for illustrative purposes only and may be specifically referred to as shown in fig. 1 to 3.
It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.
In the related art, in order to reduce the volume of the projection device and facilitate the carrying by the user, a miniature projection device is produced, so-called pocket projection and portable projector, and the traditional huge projector is exquisite, portable, miniaturized, entertaining and practical, so that the projection technology is closer to life and entertainment.
However, the micro-projection device in the related art is horizontally arranged, and the micro-projection device needs to be horizontally arranged in a use state, so that an excessive space is occupied in a horizontal direction, and the micro-projection device is inconvenient for a user to place. Moreover, the projection light machine of the micro projection equipment adopts a spatial light modulator, and due to the characteristics of the spatial light modulator, if the projection light machine is directly rotated to a vertical state, a projected picture can also be rotated; alternatively, if the spatial light modulator itself is directly rotated, the projected picture is also rotated. Accordingly, the inventors of the present disclosure found that: on the premise of ensuring that the direction of a projected picture is not changed, the technical problem which needs to be solved is to reduce the space occupied by the projection equipment in the horizontal direction as much as possible.
On the premise that the technical problems are taken as guidance:
referring to fig. 1 to 3, the present disclosure provides a projection optical machine, which includes a light emitting device 1, a collimating device 2, a relay device 3, and an imaging device 4 in sequence along an optical path. The plurality of components in the collimating device 2 are arranged in sequence along the first direction a to collimate the light emitted by the light emitting device 1. The relay device 3 is used for transmitting the light rays emitted from the collimating device 2 to the imaging device 4; a plurality of components in the imaging device 4 are arranged in sequence in the second direction B for projecting light into an image. The relay device 3 includes a reflector 31, a relay 32, and a spatial light modulator 33; the reflecting member 31 is used for reflecting the light emitted by the collimating device 2 to the relay member 32; the relay member 32 is for guiding the light emitted from the reflecting member 31 to the spatial light modulator 33, and for guiding the light emitted from the spatial light modulator 33 to the imaging device 4.
In the above-described configuration, first, since the plurality of components in the collimator device 2 are arranged in order in the first direction a, the light propagates substantially in the first direction a when passing through the collimator device 2, and the plurality of components in the imaging device 4 are arranged in order in the second direction B, the light propagates substantially in the second direction B when passing through the imaging device 4, and by providing the reflecting member 31 in the relay device 3, the direction of propagation of the light can be effectively changed, and the light emitted from the collimator device 2 can be directed to the imaging device 4. Secondly, a plurality of parts among the collimating device 2 set gradually along first direction A, and a plurality of parts among the image device 4 set gradually along second direction B, and this first direction A is vertical direction, and second direction B is located the horizontal plane, then the whole vertical type that is of projection ray apparatus in vertical direction, and then projection equipment also is vertical type in vertical direction, reduces the space that projection equipment occupies at the horizontal direction effectively, and the user of being convenient for places.
In one embodiment, in order to ensure that the projection light engine is in the above-mentioned upright position, the image projected on the projection screen 100 is not rotated, and the image projected on the projection screen 100 is still 21 to 9, not 9 to 21. The spatial light modulator 33 may comprise a rectangular modulation surface, the length direction of which is parallel to the second direction B and the width direction of which is parallel to the first direction a, so as to ensure that the direction of the projected image is not rotated.
Alternatively, the spatial Light modulator 33 may be a DLP (Digital Light processing) chip or an LCOS (Liquid Crystal on Silicon) chip, which is not limited in the disclosure.
Optionally, referring to fig. 1 and 2, the relay device 3 further comprises a focusing element 34 for converging the light. For example, the focusing member 34 may be configured as a first focusing lens, the light-in side of which is disposed opposite to the light-out side of the collimating device 2, and the light-out side of which is disposed opposite to the reflecting member 31; or, the light incident side of the first focusing lens is disposed opposite to the reflecting member 31, and the light emergent side is disposed opposite to the light incident side of the relay member 32. By providing the first focusing lens, a good focusing effect can be performed on the light emitted from the collimating device 2, and the imaging effect can be improved.
Alternatively, the focusing element 34 may be configured as a focusing lens group, the focusing lens group includes at least two second focusing lenses 340 disposed at intervals in sequence, the light incident side of the focusing lens group is disposed opposite to the light emergent side of the collimating device 2, and the light emergent side is disposed opposite to the reflecting element 31; or, the light incident side of the focusing lens group is arranged opposite to the reflecting member 31, and the light emergent side is arranged opposite to the light incident side of the relay member 32; alternatively, the reflecting member 31 is disposed between any adjacent two of the second focusing lenses 340.
That is, the present disclosure does not limit the specific structural form of the focusing element 34, and may also be configured as a focusing lens group including a plurality of second focusing lenses 340, and the reflection element 31 may be disposed on the light incident side of the focusing lens group, on the light emergent side of the focusing lens group, or between two adjacent second focusing lenses 340 in the focusing lens group. The light focusing effect of the focusing member 34 can be ensured while the reflecting member 31 can change the light propagation direction.
For example, referring to fig. 1 and 3, each of the focusing members 34 may be configured as a focusing lens group, and the focusing lens group may include two second focusing lenses 340 disposed at intervals, and the reflecting member 31 may be disposed between the two second focusing lenses 340.
Alternatively, referring to fig. 2, the focusing element 34 includes a focusing structure 344, and the focusing structure 344 may be configured as the first focusing lens described above or the second focusing lens 340 in the focusing lens group described above. The focusing structure 344 includes a first optical surface 3441, a focusing surface 3442, a second optical surface 3443, and a reflective film (not shown) covering the focusing surface 3442; the reflecting member 31 is disposed opposite to the first optical surface 3441, so that the light reflected by the reflecting member 31 is transmitted into the focusing structure 344 through the first optical surface 3441 and emitted to the second optical surface 3443, the second optical surface 3443 can make the light totally reflected or partially reach the focusing surface 3442, and the focusing surface 3442 can converge the light, reflect the light to the second optical surface 3443 through the reflecting film, and emit the light from the second optical surface 3443 to the relay member 32.
In this embodiment, the focusing surface 3442 can also reflect the light by using a reflective film covering thereon, in addition to the function of focusing the light, so as to change the propagation direction of the light and facilitate the flexible arrangement of the light path. The second optical surface 3443 not only can reflect the light incident from the first optical surface 3441 to the focusing surface 3442, but also can transmit the light reflected from the focusing surface 3442 out of the focusing structure 344, i.e., for the light from two different directions, the second optical surface 3443 can respectively reflect and transmit, so as to facilitate the setting of the optical path, and at the same time, the reflection device and the transmission device do not need to be separately arranged, so that the reflection and transmission functions are integrated on the same device, the setting of the optical device is reduced, and the light-weighted design of the projection optical machine is facilitated.
In one embodiment, referring to fig. 2, the relay 32 includes an incident surface 321, the incident surface 321 is opposite to and spaced apart from the second optical surface 3443, the incident surface 321 and the second optical surface 3443 are both disposed in a plane and parallel to each other, and the distance between the incident surface 321 and the second optical surface 3443 is between 0.01mm and 10 mm.
In this embodiment, after the light beam exits from the second optical surface 3443 of the focusing element 34, the light beam can be emitted to the relay element 32 because the light incident surface 321 of the relay element 32 is opposite to the second optical surface 3443. By arranging the light incident surface 321 and the second optical surface 3443 opposite to each other and at an interval, a certain air gap can be reserved, and total reflection of the second optical surface 3443 and/or the light incident surface 321 can be ensured.
By disposing the light incident surface 321 and the second optical surface 3443 in a plane and parallel to each other, the efficiency of light transmission can be improved, and excessive light loss can be avoided. In other embodiments, the light incident surface 321 and the second optical surface 3443 may not be parallel, which is not limited in this disclosure.
The distance between the light incident surface 321 and the second optical surface 3443 may be 0.01mm, 5mm, or 10mm, which is not limited in this disclosure, and the light incident surface 321 and the second optical surface 3443 may be arranged at an interval.
Alternatively, the second optical surface 3443 can make the incident angle of the light transmitted from the first optical surface 3441 larger than the total reflection angle of the focusing structure 344, and the light transmitted from the first optical surface 3441 can be totally reflected and directed to the focusing surface 3442 when being directed to the second optical surface 3443.
And/or, the second optical surface 3443 can make the incident angle of the light reflected from the focusing surface 3442 smaller than the total reflection angle of the focusing structure 344, so that the light reflected from the focusing surface 3442 can be totally transmitted and emitted to the light incident surface 321 when being emitted to the second optical surface 3443. Therefore, the utilization efficiency of light is further improved, and the imaging quality is improved.
Referring to fig. 1 and 2, the first optical surface 3441 is configured as a plane and is located in a plane defined by the first direction a and the third direction C, the second optical surface 3443 is configured as a plane and extends along the first direction a, and an angle between the second optical surface 3443 and the first optical surface 3441 is less than 90 degrees.
In this embodiment, by disposing the first optical surface 3441 in the plane defined by the first direction a and the third direction C, it is possible to efficiently receive the light incident from the second direction B. For example, as can be seen from the above, the light in the collimating device 2 propagates substantially along the first direction a, and the direction of propagation of the light can be changed by disposing the reflecting member 31, for example, the light reflected by the reflecting member 31 can propagate along the second direction B, thereby facilitating the light to be received by the first optical surface 3441. Secondly, the second optical surface 3443 is configured as a plane and extends along the first direction a, and an included angle between the second optical surface 3443 and the first optical surface 3441 is smaller than 90 degrees, so that the direction of the light can be changed, and the flexible arrangement of the light path is facilitated.
Alternatively, as shown with reference to FIG. 2, the focal plane 3442 is configured as an outwardly convex curved surface. However, the present disclosure does not limit the specific shape of the focusing surface 3442, and may perform a good focusing function on light.
In one embodiment, referring to fig. 1 and 3, the reflecting member 31 is configured as a reflecting plane mirror, the reflecting plane mirror includes a reflecting plane 311 for reflecting light, the reflecting plane 311 extends along the third direction C, and an included angle between the reflecting plane 311 and a plane defined by the first direction a and the third direction C is less than 90 degrees.
The reflecting piece 31 is set as a reflecting plane mirror, which can play a role of reflecting light well and can reduce the manufacturing cost; and by extending the reflection plane 311 along the third direction and making an included angle between the reflection plane and the plane defined by the second direction B and the third direction C smaller than 90 degrees, the propagation direction of the light can be changed, and the requirements of different propagation directions are met. For example, if the angle between the reflection plane 311 and the plane defined by the second direction B and the third direction C is 45 degrees, the direction emitted from the collimating device 2 and propagating along the first direction a will propagate along the second direction B after being emitted to the reflection plane 311.
Referring to fig. 1 and 3, the relay 32 includes a light incident surface 321, a first light emitting surface 322, and a second light emitting surface 323 connected to each other two by two. The first light emitting surface 322 is located in a plane defined by the first direction a and the second direction B, the second light emitting surface 323 is located in a plane defined by the first direction a and the third direction C, and the light incident surface 321 extends along the first direction a. The light incident surface 321 is used for transmitting the light reflected by the reflector 31 into the relay 32 and emitting the light to the first light emitting surface 322, the spatial light modulator 33 is disposed opposite to and spaced apart from the first light emitting surface 322 to receive the light emitted from the first light emitting surface 322, the first light emitting surface 322 is used for transmitting the light emitted from the spatial light modulator 33 into the relay 32, the light incident surface 321 is used for reflecting the light emitted from the first light emitting surface 322 to the second light emitting surface 323, and the second light emitting surface 323 is used for being disposed opposite to the light incident side of the imaging device 4.
For example, the relay 32 may be configured as a TIR (Total Internal Reflection) prism, but the present disclosure does not limit the specific structure type of the relay 32.
When the light beam is reflected by the reflector 31 and emitted to the light incident surface 321, the light beam is transmitted into the relay 32 through the light incident surface 321, and then emitted to the first light emitting surface 322, where the light beam is transmitted at the first light emitting surface 322 and emitted to the spatial light modulator 33. The spatial light modulator 33 and the first light emitting surface 322 may be disposed at an interval, so as to prevent the first light emitting surface 322 from damaging the spatial light modulator 33. The light is emitted into the spatial light modulator 33 and then emitted out after being modulated, the light emitted from the spatial light modulator 33 is emitted to the first light emitting surface 322, the light is emitted into the relay 32 through the first light emitting surface 322, the light is then emitted to the light incident surface 321, the light is reflected at the light incident surface 321 and emitted to the second light emitting surface 323, and then the light is emitted from the relay 32 through the second light emitting surface 323 and emitted to the imaging device 4.
In other embodiments, in order to improve the light homogenization effect, the relay device 3 may further include a light homogenizing device 35, and the light homogenizing device 35 may be disposed opposite to the light emitting side of the collimating device 2 to homogenize the light emitted from the collimating device 2. The light unifying device 35 may be configured as a fly eye lens or a diffusion sheet, etc., and the present disclosure does not limit the specific structure type of the light unifying device 35.
The present disclosure further provides a projection device, which includes the above projection light engine.
The above are only embodiments of the present disclosure, and not intended to limit the scope of the present disclosure, and all equivalent structures or equivalent processes performed by the present disclosure and the contents of the attached drawings, which are directly or indirectly applied to other related technical fields, are also included in the scope of the present disclosure.
Claims (12)
1. A projection optical machine is characterized by comprising a light-emitting device, a collimating device, a relay device and an imaging device in sequence along an optical path, wherein a plurality of components in the collimating device are arranged in sequence along a first direction so as to collimate light emitted by the light-emitting device; the relay device is used for conducting the light rays emitted from the collimating device to the imaging device; a plurality of components in the imaging device are sequentially arranged along a second direction and used for projecting light rays into an image;
the relay device comprises a reflector, a relay and a spatial light modulator; the reflecting piece is used for reflecting the light rays emitted by the collimating device to the relay piece; the relay is used for conducting the light emitted from the reflecting part to the spatial light modulator and conducting the light emitted from the spatial light modulator to the imaging device;
wherein the first direction extends in a vertical direction and the second direction extends in a horizontal plane.
2. The light projector of claim 1 wherein the spatial light modulator comprises a rectangular modulation surface, the rectangular modulation surface having a length direction parallel to the second direction and a width direction parallel to the first direction.
3. The light engine of claim 1, wherein the relay device further comprises a focusing element for converging light;
the focusing piece is configured as a first focusing lens, and the first focusing lens is used for converging the light rays emitted by the reflecting piece to the relay piece; or, the first focusing lens is used for converging the light rays emitted by the collimating device to the reflecting piece.
4. The light engine of claim 1, wherein the relay device further comprises a focusing element for converging light;
the focusing element is constructed as a focusing lens group which comprises at least two second focusing lenses and is used for converging the light rays emitted by the collimating device to the reflecting element; or, the reflecting piece is used for reflecting the light rays emitted by one of the second focusing lenses to the other second focusing lens.
5. The light engine of claim 3 or 4, wherein the focusing element comprises a focusing structure;
the focusing structure comprises a first optical surface, a focusing surface, a second optical surface and a reflecting film, and the reflecting film covers the focusing surface; the reflecting piece is arranged opposite to the first optical surface and used for enabling the light reflected by the reflecting piece to be transmitted into the focusing structure through the first optical surface and to be emitted to the second optical surface, the second optical surface can enable the light to be totally reflected or partially reflected to the focusing surface, and the focusing surface can converge the light, reflect the light to the second optical surface through the reflecting film and emit the light to the relay piece from the second optical surface.
6. The light projector of claim 5, wherein the relay comprises a light incident surface, the light incident surface is opposite to the second optical surface and is disposed at an interval, the light incident surface and the second optical surface are both disposed in a plane and are parallel to each other, and a distance between the light incident surface and the second optical surface is between 0.01mm and 10 mm.
7. The light engine of claim 5, wherein the second optical surface is capable of transmitting light rays from the first optical surface at an angle of incidence greater than an angle of total reflection of the focusing structure and/or the second optical surface is capable of reflecting light rays from the focusing surface at an angle of incidence less than an angle of total reflection of the focusing structure.
8. The light engine of claim 5, wherein the first optical surface is configured as a plane and is located in a plane defined by the first direction and a third direction, the second optical surface is configured as a plane and extends along the first direction, and an included angle between the second optical surface and the first optical surface is less than 90 degrees; wherein the third direction extends in a horizontal plane and is perpendicular to the second direction.
9. The light projector of claim 5 wherein the focus plane is configured as an outwardly convex curve.
10. The light projector of claim 1 wherein the reflector is configured as a reflecting plane mirror comprising a reflecting plane for reflecting light, the reflecting plane extending in a third direction, the angle between the reflecting plane and a plane defined by the second direction and the third direction being less than 90 degrees, wherein the third direction extends in a horizontal plane and is orthogonal to the second direction.
11. The light projector as defined in claim 1, wherein the relay comprises a light incident surface, a first light emitting surface and a second light emitting surface, the light incident surface, the first light emitting surface and the second light emitting surface being connected to each other two by two, the first light emitting surface being located in a plane defined by the first direction and the second direction, the second light emitting surface being located in a plane defined by the first direction and the third direction, the light incident surface extending along the first direction;
the light incident surface is used for transmitting the light reflected by the reflecting part into the relay part and emitting the light to the first light emitting surface, the spatial light modulator is arranged opposite to the first light emitting surface and is used for receiving and modulating the light emitted from the first light emitting surface, the modulated light is emitted to the light incident surface through the first light emitting surface, and the light incident surface is used for reflecting the light to the second light emitting surface so as to enable the light to be emitted from the relay part; wherein the third direction extends in a horizontal plane and is perpendicular to the second direction.
12. A projection device, characterized in that the projection device comprises the light engine of any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589464.5A CN114967299A (en) | 2022-05-26 | 2022-05-26 | Projection optical machine and projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210589464.5A CN114967299A (en) | 2022-05-26 | 2022-05-26 | Projection optical machine and projection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114967299A true CN114967299A (en) | 2022-08-30 |
Family
ID=82955394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210589464.5A Pending CN114967299A (en) | 2022-05-26 | 2022-05-26 | Projection optical machine and projection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114967299A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258507A (en) * | 1993-03-03 | 1994-09-16 | Canon Inc | Color separation optical system |
| JPH10206933A (en) * | 1997-01-21 | 1998-08-07 | Olympus Optical Co Ltd | Real image finder |
| JPH11211998A (en) * | 1998-01-22 | 1999-08-06 | Minolta Co Ltd | Finder inversion optical system |
| KR20140096492A (en) * | 2013-01-28 | 2014-08-06 | 엘지전자 주식회사 | Vertical type projector |
| CN209728405U (en) * | 2019-06-03 | 2019-12-03 | 歌尔科技有限公司 | Projection optical system and projection arrangement with it |
| CN111487837A (en) * | 2019-01-25 | 2020-08-04 | 舜宇光学（浙江）研究院有限公司 | Miniature projection light engine based on D L P technology |
| CN114200748A (en) * | 2021-12-10 | 2022-03-18 | 广景视睿科技（深圳）有限公司 | Miniature projection optical machine |
-
2022
- 2022-05-26 CN CN202210589464.5A patent/CN114967299A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06258507A (en) * | 1993-03-03 | 1994-09-16 | Canon Inc | Color separation optical system |
| JPH10206933A (en) * | 1997-01-21 | 1998-08-07 | Olympus Optical Co Ltd | Real image finder |
| JPH11211998A (en) * | 1998-01-22 | 1999-08-06 | Minolta Co Ltd | Finder inversion optical system |
| KR20140096492A (en) * | 2013-01-28 | 2014-08-06 | 엘지전자 주식회사 | Vertical type projector |
| CN111487837A (en) * | 2019-01-25 | 2020-08-04 | 舜宇光学（浙江）研究院有限公司 | Miniature projection light engine based on D L P technology |
| CN209728405U (en) * | 2019-06-03 | 2019-12-03 | 歌尔科技有限公司 | Projection optical system and projection arrangement with it |
| CN114200748A (en) * | 2021-12-10 | 2022-03-18 | 广景视睿科技（深圳）有限公司 | Miniature projection optical machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW200807134A (en) | Liquid crystal projector and image reproducing device | |
| CN111487837A (en) | Miniature projection light engine based on D L P technology | |
| US9563113B2 (en) | Multi-projection system using a single illumination source and a single imaging device | |
| JP3235064U (en) | Image projector coupled to light guide optics | |
| JP2010054997A (en) | Image projection apparatus, prism, prism system and projection optical system | |
| TWI512334B (en) | Light source system and display apparatus comprising the same | |
| CN214795441U (en) | Miniature projection light engine and wearable display device | |
| US9160992B2 (en) | Projection apparatus having MEMS mirror with plural projection paths | |
| CN113777868A (en) | Optical illumination system and laser projection equipment | |
| KR101351351B1 (en) | Optical system for pico projector | |
| US20090067072A1 (en) | Prism system with prism spacer | |
| CN216387590U (en) | Micro-projection light engine and near-to-eye display device | |
| CN107678165A (en) | The display device and intelligent glasses of augmented reality | |
| KR101133134B1 (en) | Alignment apparatus of light axis and Micro projector comprising the same | |
| US20100103380A1 (en) | Critical abbe illumination configuration | |
| CN111158143B (en) | Micro projection light engine for near-eye display device | |
| WO2011103807A1 (en) | Image projection system and optical path synthesizer thereof | |
| CN114967299A (en) | Projection optical machine and projection equipment | |
| CN111435215A (en) | Compact miniature projection light engine | |
| WO2022078436A1 (en) | Projection optical system | |
| CN219456711U (en) | Projection optical engine and AR display device | |
| CN110320731B (en) | Multimedia device and robot | |
| CN113960862A (en) | Projection device | |
| CN220064597U (en) | Dodging device, light emitting device and projection equipment | |
| US20240201474A1 (en) | Projection Device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220830 |
|
| RJ01 | Rejection of invention patent application after publication |