22 results about "Dichroic prism" patented technology

The invention discloses a projection display system and near-to-eye display equipment. The projection display system comprises a beam splitter prism, a display element and an imaging assembly. The beam splitter prism is matched with a reflector, a field lens and a single lens in the imaging assembly, and light in the projection display system is turned. Light emitted by the display element enters the beam splitter prism after passing through the field lens and is transmitted to the reflector by the beam splitter prism, the reflector reflects the light, and the reflected light enters the beam splitter prism again, is reflected to the single lens by the beam splitter prism and then is emitted from the light emitting side of the projection display system. Therefore, the imaging light path is compressed, the size of the projection display system is effectively reduced, and the miniaturization of the projection display system is realized.

A measurement system for detecting deep-hole surface topography based on low-coherence interferometry (LCI) can include a detection part and an autocollimation system. The detection part includes a white light interferometric system, which specifically includes a 1550 nm amplified spontaneous emission (ASE) broadband light source, a first reflector, a first beam splitting prism, a second reflector, and a reference reflector that are arranged in sequence, where a to-be-measured deep-hole and a near-infrared camera are respectively arranged at two sides of the first beam splitting prism, and a conical prism is disposed inside the to-be-measured deep-hole. The autocollimation system is disposed between the to-be-measured deep-hole and the first beam-splitting prism. The autocollimation system includes a 630 nm light source, a dichroic prism, a second beam-splitting prism, a third reflector, and a quadrant detector that are arranged in sequence.

An image pickup module includes: a color separation prism that separates incident light into light beams and includes emission surfaces configured to emit the light beams in different directions; and image pickup elements provided corresponding to the emission surfaces. The image pickup element includes a facing surface facing the emission surface and including an image pickup region and an outer peripheral region outside the image pickup region, and the image pickup element is fixed to the color separation prism with an adhesive interposed between the outer peripheral region and the emission surface. At least one of the emission surfaces includes a distance increasing portion that faces the outer peripheral region and is formed such that a facing distance from the distance increasing portion to the outer peripheral region is greater than a facing distance from the at least one of the emission surfaces to the image pickup region.

A wearable heads-up display (WHUD) reduces the prevalence of visual artifacts by employing a projector with a combiner including a plurality of combiner elements such as dichroic prisms. The projector is configured with one or more features that 1) reduce the amount of stray light generated at the combiner 2) change the path of the stray light so that the stray light is unable to exit the projector and thus is unable to create visual artifacts, or any combination thereof. By reducing the stray light that is generated and by changing the path of the stray light as described herein, the likelihood that a user will see a visual artifact is reduced, thus improving the user experience with the WHUD system.

The projection exposure apparatus (10) comprises: a mask mark illumination light source (21) capable of irradiating a mask mark (MM) with exposure light itself or first alignment light (L1) having substantially the same wavelength as the exposure light; and an alignment unit (30) having a workpiece mark illumination light source (31) capable of irradiating a workpiece mark (WM) with second alignment light (L2) having a different wavelength from the exposure light, an imaging device (32), and an imaging optical system (40). The imaging optical system (40) comprises: a first dichroic prism (41) for synthesizing the first alignment light (L1) and light from the workpiece mark (WM) and emitting the resultant light to the imaging device (32); and an optical path length changing optical system (42) for branching and converging the first alignment light (L1) so that the optical positional relationships of the images (MMI) of the workpiece mark (WM) and the mask mark (MM) relative to the imaging device (32) are equal. Thus, a projection exposure apparatus and a projection exposure method capable of high-precision alignment even in a small-sized exposure area can be provided.

A projection device includes a dichroic prism, a first self-luminous display device, a second self-luminous display device, a third self-luminous display device, and a projection optical system. The dichroic prism has a first surface, a second surface, a third surface, and a fourth surface, and is configured to emit combined image light from the fourth surface. The first self-luminous display device is configured to use light of a first wavelength to emit first image light to the first surface. The second self-luminous display device is configured to use light of a second wavelength to emit second image light to the second surface. The third self-luminous display device is configured to use light of a third wavelength to emit third image light to the third surface. The projection optical system is configured to project, onto a projection target, the combined image light emitted from the dichroic prism.

The invention provides an intelligent recommendation method for building a color separation prism optical system, and belongs to the technical field of intelligent recommendation, and the method comprises the steps: obtaining dominant and implicit granularity features of an optical demand, and building an optical feature matrix after correlation mining; establishing an optical feature priority dynamic attenuation function, hierarchically splitting matrix features through a hierarchical encoder, and mapping the matrix features to a component semantic space in combination with an optical component knowledge graph; inputting a mapping result into a matching model built by an optical component heterogeneous graph neural network, and obtaining a component recommendation combination by taking light splitting precision, component compatibility and working condition adaptability as core optimization targets; and performing parameter correction and optimal value calculation on each combination, and screening a final recommendation combination to complete system establishment. According to the method, through deep excavation of explicit and implicit features, dynamic priority adjustment and multi-constraint component matching, the building precision, stability and adaptability of the color separation prism optical system are improved, meanwhile, the building efficiency is remarkably improved, and personalized requirements under complex scenes are met.

A high brightness optical engine device includes at least one long wavelength red light source having a peak wavelength longer than 630 nm, at least one green wavelength light source, and at least one blue wavelength light source. Further, long wavelength red light may be combined with short wavelength red light and green / blue light into a coaxial optical path by at least one beam combiner, such as a wedge dichroscope, X-plate dichroscope, or dichroic light combining prism. A 3-channel / 4-channel / 5-channel optical engine device and a hybrid laser LED optical engine device are disclosed that include at least one long wavelength red light source, one blue light source, and one fluorescence-converted green light source combined by a dichroic mirror with an X-plate dichroic mirror, a wedge dichroic mirror, or a dichroic prism, and the optical expansion amount is not increased, so that the high-brightness optical engine output up to 5000lm can be realized.

The embodiment of the utility model provides an image double-imaging device which comprises an image device and a movable mechanical structure connected with the image device. The image device comprises a lens, a beam splitter prism group, a first display and a second display. The beam splitter prism group is arranged above the lens to receive an image light path of the lens, and the beam splitter prism group comprises a beam splitter prism, a first reflector and a second reflector. The first display is arranged above the first reflector and is configured to receive the first reflection image light path and convert the first reflection image light path into a first image signal. The second display is arranged above the second reflector and is configured to receive the second reflection image light path and convert the second reflection image light path into a second image signal. Therefore, more comfortable experience is provided for a user when the user uses the image dual-imaging equipment.

This makes it easier to design filters when setting steep cutoff characteristics, suppresses the degradation of spatial resolution and the occurrence of crosstalk between channels, and makes the device more compact. The dichroic prism 10a and N (N is an integer of 2 or more) imaging plates 11a and the like are provided, and the dichroic prism 10a generates N different spectral characteristics D for wavelength components contained in an incident light beam 2. (1) (λ)~D (N) The nth (n is an integer between 1 and N) of the N imaging plates is a set of M n Type (M n is 2 or moreM n (an integer less than or equal to) are arranged at the corresponding pixels, and in the n-th imaging plate, M n The mth filter (m is 1 or more) n (an integer less than or equal to T m (n) (λ), D (n) (λ)T m (n) (λ) has different spectral properties for different ordered pairs (m,n).

Provided is a novel imaging device capable of appropriately acquiring a fluorescence image and a reflected light image of an object. The imaging device (2) is provided with: a stage (21) for holding an object; a first emission unit (3) that emits first emission light, which is ultraviolet light; a second emission unit (4) that emits second emission light, which is light having a wavelength region different from that of the ultraviolet light; a cross-shaped dichroic prism (5), which is a quadrangular prism having first to fourth side surfaces (51, 54), and which emits the first emission light from a third side surface (53) to the first side surface and guides the first emission light to an imaging region (90) on an object, and emits the second emission light from the third side surface (53) to the imaging region and guides the second emission light from the third side surface (53) to the imaging region; and an imaging unit (7) that receives fluorescent light generated in the imaging region when the first emission light is irradiated to the imaging region, and that receives reflected light of the second emission light in the imaging region when the second emission light is irradiated to the imaging region.

The utility model relates to a particle scattered light signal acquisition system which comprises a photoelectric detector, a beam splitter prism, a camera, a particle sample injector, a lens and a laser. Light emitted by the laser irradiates the particle sample injector through the converging lens, the beam splitter prism is placed in the transmission direction, one part of light penetrates through the beam splitter prism and is collected by the photoelectric detector, and the other part of light is reflected by the beam splitter prism and is collected by the camera. When particles pass through the particle sample injector, scattered light is generated, one part of the scattered light is collected by the photoelectric detector, and the other part of the scattered light is collected by the camera. On the basis that the photoelectric detector is used for collecting optical signals, an optical path for collecting the optical signals by using the camera is added, the minimum detection radius of the camera detector can reach 30 microns or even smaller, and small-angle scattered light which cannot be collected by the photoelectric detector can be collected under the condition that the focal length of the lens is not changed, so that the particle detection upper limit is improved.

The embodiment of the invention provides an optical machine module and optical projection equipment. Wherein the ray machine module comprises a front diaphragm, a projection lens, an Xcube color combination prism and an image source which are arranged in sequence; the projection lens comprises four aspherical lenses, a first lens, a second lens, a third lens and a fourth lens are sequentially arranged in the direction from the front diaphragm to the Xcube color combination prism, and the projection lens has positive focal power; the image source comprises a red muLED panel, a green muLED panel and a blue muLED panel which are used for emitting red light, green light and blue light respectively. The Xcube color combination prism is configured to perform color combination processing on red, green and blue light rays from the image source so as to form a full-color image; the pixel size Pixel Size, the angular resolution PPD and the diagonal field of view DFOV of the image source meet the condition that Pixel Size * PPD * DFOV is larger than or equal to 2.0 and smaller than or equal to 8.0.

A rigid-scope optical system includes: an image-formation optical system that causes an image in each of wavelength bands to be formed in a predetermined imaging device, the wavelength bands including a fluorescence wavelength band and a visible light wavelength band; and a color-separation-prism optical system having a dichroic film that separates an optical path of light to be imaged into an optical path of the visible light wavelength band and an optical path of the fluorescence wavelength band, in which the image-formation optical system causes the respective images to be formed in a fluorescence imaging device and a visible light imaging device, the fluorescence imaging device and the visible light imaging device being disposed to cause an amount of misalignment to correspond to a difference between an optical path length of fluorescence and an optical path length of visible light.

To provide a projection type display apparatus capable of contributing to improving life reliability and suppressing an increase in size of an optical system.SOLUTION: A projection type display apparatus comprises: a first electro-optical device that emits first image light of a first color; a second electro-optical device that emits second image light of a second color and a second polarization; a third electro-optical device that emits third image light of a third color and a first polarization; a fourth electro-optical device that emits fourth image light of the third color and the second polarization; a first cross dichroic prism that synthesizes the first image light and the third image light, and a second cross dichroic prism that synthesizes and emits the first synthesized light emitted from the first cross dichroic prism and the second image light and the fourth image light. The first electro-optical device and the third electro-optical device are arranged in a first direction with the first cross dichroic prism interposed therebetween, the second electro-optical device and the fourth electro-optical device are arranged in a second direction with the second cross dichroic prism interposed therebetween, and the first electro-optical device, the second electro-optical device, the third electro-optical device, and the fourth electro-optical device are arranged along the same surface.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of medical instruments, in particular to a slit lamp optical filter clamp. According to the technical scheme, a light guide pipe is arranged at the upper end of a base, a beam splitter prism is installed at the top end of the light guide pipe, a slit lamp is arranged in the base, and light of the slit lamp penetrates through the light guide pipe and is reflected through the beam splitter prism; a connecting rod is arranged on one side of the light guide pipe, a baffle is installed on the connecting rod, and a first light filter and a second light filter are clamped and fixed between the connecting rod and the baffle. Through the ingenious design of the connecting rod, the baffle plate, the tension spring and the inserting rod, a user can easily replace the first optical filter and the second optical filter, so that a white light optical filter or a fluorescein optical filter plate suitable for the current inspection requirement can be quickly selected. The design improves the flexibility and efficiency of inspection.

The present invention relates to the technical field of machine vision lenses, and discloses an industrial telecentric lens and its optical system. The optical system comprises a front lens group S1 with positive focal power, a dichroic prism P, an aperture T, and a rear lens group S2 with positive focal power, which are arranged in sequence from the object side to the image side. The aperture T is arranged at the focus of the front lens group S1 to form an object-side telecentric structure; the front lens group S1 comprises a first lens G1 with positive focal power, a second lens G2 with positive focal power, a third lens G3 with negative focal power, and a fourth lens G4 with positive focal power; the rear lens group S2 comprises a fifth lens G5 with negative focal power, a sixth lens G6 with positive focal power, and a seventh lens G7 with positive focal power. The industrial telecentric lens and its optical system provided by the present invention have a working distance of 65 mm, a small external size, and good optical performance.

To provide a projection type display apparatus capable of suppressing an increase in an optical system.SOLUTION: A projection type display apparatus comprises: a first electro-optical device that emits first image light of a first color; a second electro-optical device that emits second image light of a second color and a second polarization; a third electro-optical device that emits third image light of a third color and a first polarization; a fourth electro-optical device that emits fourth image light of the third color and the second polarization; and a first cross dichroic prism that synthesizes the first image light and the third image light, a second cross dichroic prism that synthesizes and emits the first synthesized light emitted from the first cross dichroic prism, the second image light and the fourth image light, and a first prism and a second prism which are arranged in the second cross dichroic prism. The first electro-optical device is disposed on a first incidence surface of the first cross dichroic prism, and the third electro-optical device is disposed on a second incidence surface so as to face the first electro-optical device. The second electro-optical device is disposed to face an incidence surface of the first prism, and the fourth electro-optical device is disposed to face an incidence surface of the second prism.SELECTED DRAWING: Figure 1

The application discloses a kind of deep hole surface topography measurement systems based on low coherence interference, including detection part and autocollimation system, detection part includes the white light interference system, specifically 1550nm ASE broadband light source, first mirror, first beam splitter prism, second mirror, reference mirror are sequentially arranged, two sides of first beam splitter prism are respectively provided with to-be-measured deep hole, near-infrared camera, and conical prism is arranged in to-be-measured deep hole;Autocollimation system is arranged between to-be-measured deep hole and first beam splitter prism, and autocollimation system includes sequentially arranged 630nm light source, dichroic prism, second beam splitter prism, third mirror, four-quadrant detector.The application can realize one-time scanning to deep hole surface topography, and multiple measurements are obtained by four-step phase shift algorithm, splicing algorithm and alignment algorithm, to realize the reconstruction of surface three-dimensional topography.In the device, autocollimation system is designed, the error generated by the deflection of the horizontal placement of the rod can be measured and error compensation is carried out.

A projection exposure apparatus includes a mask mark illumination light source irradiating a mask mark with exposure light itself or a first alignment light having substantially the same wavelength as the exposure light, and an alignment unit having a work mark illumination light source irradiating a work mark with second alignment light having a wavelength different from the wavelength of the exposure light, an imaging device, and an imaging optical system. The imaging optical system includes a first dichroic prism for synthesizing the first alignment light and the light from the work mark and emitting the synthesized light toward the imaging device, and an optical path length changing optical system for splitting and merging the first alignment light, in which the optical positional relationships of the work mark and the image of the mask mark with respect to the imaging device are equivalent.

According to an aspect, there is provided a treatment device (2; 30; 60; 130) for performing light-based treatment operations on or to a subject. The treatment device (2; 30; 60; 130) comprises a light source (12) for generating light for performing the treatment operation; a dichroic filter (34; 64; 104; 134) arranged at a first angle with respect to the incident light such that the incident light is separated into a transmitted light component and a reflected light component according to a cut-off wavelength of the dichroic filter (34; 64; 104; 134), wherein the transmitted light component is transmitted through the dichroic filter (34; 64; 104; 134) and the reflected light component is reflected by the dichroic filter (34; 64; 104; 134); a light exit window (10) through which a light component is emitted from the treatment device (2; 30; 60; 130); a beam dump (44; 74; 140) configured to absorb a light component; and a heat sink (46; 76; 142) coupled to the beam dump (44; 74; 140) to dissipate heat from the beam dump (44; 74; 140). The light exit window (10) and beam dump (44; 74; 140) are arranged with respect to the dichroic filter (34; 64; 104; 134) such that one of the transmitted light component and the reflected light component is emitted from the treatment device (2; 30; 60; 130) via the light exit window (10) and the other one of the transmitted light component and reflected light component is incident on the beam dump (44; 74; 140). The dichroic filter (34; 64; 104; 134) is provided on a first surface of a solid dichroic prism (38; 68) or an internal surface in a solid dichroic cuboid.

The utility model discloses an optical imaging system, which comprises a Huffman imaging system and a Mueller matrix polarization imaging system, and the Huffman imaging system and the Mueller matrix polarization imaging system can perform synchronous imaging on the same sample imaging area by arranging a plurality of beam splitter prisms. The optical imaging system disclosed by the utility model can synchronously carry out Hofmann imaging and Mueller matrix polarization imaging, in the imaging process, a sample, a light source, a camera and other components do not need to be moved, the light source and the camera are directly started through electric signals to collect images, and then images of two imaging technologies can be obtained; and then the obtained images of the two imaging technologies are fused, because two types of imaging are carried out on the same sample at the same time, the features of the obtained two types of images highly correspond in time and space, and the fusion degree of the two types of images is extremely high.