1. A combination band-pass filtering system consisting of a multiple set of cold mirrors and infra-red absorbers set in a 360-degree cascade arrangement for the purpose of limiting and re-directing photons of selected wavelengths and composed of:
an input port accepting solar light photons of undetermined wavelengths;
an output port allowing the exit of non-focused said light photons of selected wavelengths;
a first cascaded set of triangular cold mirrors each composed of a plane reflective surface positioned 45-degrees to the axis of light entering at said input port;
a second cascaded set of cold mirrors each composed of a plane reflective surface positioned a distance, with axis at 45-degrees to reflected light, from said first cascaded set of cold mirrors;
a third cascaded set of cold mirrors each composed of a plane reflective surface with axis at 45-degrees to reflected light from said second cascaded set of outer cold mirrors;
a fourth cascaded set of triangular cold mirrors each composed of a plane reflective surface, positioned 45-degrees to light received from said third set of outer cold mirrors and with reflected light toward said output port.
2. The system of claim 1 wherein the said first cascaded set of cold mirrors pass photons within light having wavelengths longer than 650 nm.+\u2212.150 nm to said infra-red absorbers and reflect or re-direct photons within light having wavelengths shorter than 650 nm.+\u2212.150 nm, to the set of second cascaded cold mirrors.
3. The system of claim 1 wherein the said second cascaded set of cold mirrors pass photons within light having wavelengths longer than 650 nm.+\u2212.150 nm. to said infra-red absorbers and reflect or re-direct photons within light having wavelengths shorter than 650 nm.+\u2212150 nm, to the said third cascaded set of cold mirrors.
4. The system of claim 1 wherein the said third cascaded set of cold mirrors pass photons within light having wavelengths longer than 650 nm.+\u2212150 nm. to said infra-red absorbers and reflect or re-direct photons within light having wavelengths shorter than 650 nm.+\u2212150 nm. to said fourth cascaded set of cold mirrors.
5. The system of claim 1 wherein the said fourth cascaded set of cold mirrors pass photons within light having wavelengths longer than 650 nm.+\u2212150 nm. to said infra-red absorbers and reflect or re-direct photons within light having wavelengths shorter than 650 nm.+\u2212150 nm. to said output port.
6. The system of claim 1 wherein the said infra-red absorbers are designed to allow thru put andor absorb photons of wavelengths longer than 650 nm.+\u2212150 nm.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A projection image display apparatus comprising:
an image light generator configured to generate image light;
a projection optics configured to project the image light on a projection surface, the projection optics including a reflection mirror configured to reflect the image light emitted from the image light generator;
an image capture device configured to capture an image of a user facing the projection surface;
a first acquisition unit configured to acquire captured image data from the image capture device;
a second acquisition unit configured to acquire sample data independently of the captured image data; and
an image controller configured to control an image to be displayed on the projection surface on the basis of the captured image data and the sample data.
2. The projection image display apparatus according to claim 1, wherein the image controller superimposes a captured image formed of the captured image data on a sample image formed of the sample data, on the projection surface.
3. The projection image display apparatus according to claim 1, further comprising a size acquisition unit configured to acquire a size of a user to be included in the captured image,
wherein the image controller matches a size of the captured image and a size of the sample image with each other on the basis of the size of the user, on the projection surface.
4. The projection image display apparatus according to claim 2, further comprising a determination unit configured to determine a deviation degree between the captured image and sample image.
5. The projection image display apparatus according to claim 4, wherein the image controller displays the deviation degree on the projection surface.
6. The projection image display apparatus according to claim 2, further comprising a size acquisition unit configured to acquire a size of a user to be included in the captured image,
wherein the image controller matches a size of the captured image and a size of the sample image with each other on the basis of the size of the user, on the projection surface.