초록 ▼

A dot-sighting device includes a light source, a beam splitter and a reflective element. The light source emits light. The beam splitter includes a surface that reflects at least a portion of a first light component of the light and transmits at least a portion of a second light component. The refle

A dot-sighting device includes a light source, a beam splitter and a reflective element. The light source emits light. The beam splitter includes a surface that reflects at least a portion of a first light component of the light and transmits at least a portion of a second light component. The reflective element reflects at least a portion of the first light component reflected by the surface of the beam splitter toward the beam splitter. The light reflected by the reflective element includes the second light component.

대표청구항 ▼

1. A dot-sighting device, comprising: a housing having a first opening and a second opening, an optical axis being defined as a straight line from the first opening to the second opening;a light source that emits light;a beam splitter that includes a surface that reflects at least a portion of a fir

1. A dot-sighting device, comprising: a housing having a first opening and a second opening, an optical axis being defined as a straight line from the first opening to the second opening;a light source that emits light;a beam splitter that includes a surface that reflects at least a portion of a first light component of the light and transmits at least a portion of a second light component; anda reflective element that reflects at least a portion of the first light component reflected by the surface of the beam splitter toward the beam splitter, the reflective element being disposed on the optical axis, whereinthe light reflected by the reflective element includes the second light component. 2. The dot-sighting device according to claim 1, further comprising a first light converting unit that converts the light emitted from the dot image generating unit into the first light component. 3. The dot-sighting device according to claim 2, further comprising a second light converting unit that blocks at least a portion of light passing through the reflective element. 4. The dot-sighting device according to claim 1, further comprising a connecting member that is arranged between the beam splitter and the reflective element, whereinthe connecting member and the beam splitter are made from a same material. 5. The dot-sighting device according to claim 1, wherein a ratio of a size of an image observed through the dot-sighting device to a size of an image observed without the dot-sighting device is in a range of from 0.985 to 1.015. 6. The dot-sighting device according to claim 1, wherein an optical system of the dot-sighting device has a composite refractive power of substantially zero. 7. The dot-sighting device according to claim 1, wherein an optical system of the dot-sighting device has a spectacle magnification between 0.985 and 1.015. 8. The dot-sighting device according to claim 1, wherein the light emitted from the light source includes a dot reticle image or a dot mask image. 9. The dot-sighting device according to claim 1, further comprising a display unit that displays video or image information, whereinthe surface of the beam splitter reflects the video or image information provided from the display unit. 10. The dot-sighting device according to claim 9, further comprising an image sensor that images a subject and provides a subject image to the display unit, whereinthe display unit displays the subject image from the image sensor. 11. The dot-sighting device according to claim 9, further comprising a thermal imaging apparatus that images a subject and provides a subject image to the display unit, whereinthe display unit displays the subject image from the thermal imaging apparatus. 12. The dot-sighting device according to claim 1, wherein the reflective element includes a singlet lens or a doublet lens. 13. The dot-sighting device according to claim 1, wherein the reflective element includes a flat concave lens. 14. The dot-sighting device according to claim 1, wherein an optical axis of the beam splitter is parallel to an optical axis of the reflective element. 15. The dot-sighting device according to claim 1, wherein the beam splitter includes a polarization beam splitting (PBS) prism. 16. A dot-sighting device, comprising: a light source that emits light;a beam splitter that includes a surface that reflects at least a portion of a first light component of the light and transmits at least a portion of a second light component;a reflective element that reflects at least a portion of the first light component reflected by the surface of the beam splitter toward the beam splitter;a first light converting unit that converts the light emitted from the dot image generating unit into the first light component; anda second light converting unit that blocks at least a portion of light passing through the reflective element, whereinthe light reflected by the reflective element includes the second light component, andthe first light converting unit and the second light converting unit include linear polarizers that have polarization directions perpendicular to each other. 17. A dot-sighting device, comprising: a light source that emits light;a beam splitter that includes a surface that reflects at least a portion of a first light component of the light and transmits at least a portion of a second light component; anda reflective element that reflects at least a portion of the first light component reflected by the surface of the beam splitter toward the beam splitter;a third light converting unit that is arranged between the beam splitter and the light source; anda fourth light converting unit that has a polarization direction opposite to a polarization direction of the third light converting unit and is arranged to block light passing through the reflective element, whereinthe light reflected by the reflective element includes the second light component. 18. The dot-sighting device according to claim 17, wherein the third and fourth light converting units are circular polarizers. 19. A dot-sighting device, comprising: a housing having a first opening and a second opening, an optical axis being defined as a straight line from the first opening to the second opening;a light source that emits light;a reflective element that reflects light, the reflective element being disposed on the optical axis; andan optical system that reflects at least a portion of the light emitted from the light source and transmits at least a portion of the light reflected by the reflective element. 20. The dot-sighting device according to claim 19, wherein the dot-sighting device has a spectacle magnification in a range of from 0.985 and 1.015. 21. The dot-sighting device according to claim 19, further comprising a display unit that displays video or image information; andan imaging apparatus that images a subject and provides a subject image to the display unit, whereinthe display unit displays the subject image from the imaging apparatus, and the optical system reflects the subject image. 22. The dot-sighting device according to claim 19, wherein a second optical axis is defined by the optical system, and the second optical axis is substantially parallel to the optical axis defined from the first opening to the second opening of the housing.